Santa Clara Weather
Town • San Francisco Bay Area
Santa Clara stretches across the flat middle of the valley, from the Santa Clara University campus north to Levi's Stadium on Tasman Drive. The campus is built around a mission first founded by Franciscans in 1777, and the stadium sits a few miles from the bay's southern sloughs. Between them lie neighborhoods, office parks, and the west flank of San Jose's airport. Its north end is closer to open bay water than any of the West Valley towns, and that shapes its afternoons.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Santa Clara weather today and through the year
It's 53°F at Santa Clara right now (feels like 50°F), with 6 mph wind and a comfort score of 77. Monday's forecast high at Santa Clara is 56°F, 10°F below the mid November normal of 66°F. The best window today is 11 AM to 2 PM, at about 54°F with a 2 mph wind (comfort 61).
August is the warmest month at Santa Clara, with an average high of 83°F. December is the coldest, with an average low of 40°F. February is the wettest month (3.0 in.), out of about 15.0 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Santa Clara are June, September, and July. The best hours are usually 10 AM to 1 PM in June, 10 AM to 1 PM in September, and 10 AM to 1 PM in July.
Distance from the bay is the story here. The summer sea breeze enters through the Golden Gate and the gaps in the Peninsula hills, then runs down the length of the bay as a northwest wind. Santa Clara's north end, around Levi's Stadium and Great America, feels it earlier and stronger than Campbell or Los Gatos. Afternoons there are breezier and a touch cooler than in the south end near the university.
Forecast updated November 15, 2026 at 4:00 AM PST. Climate figures come from NOAA 1991-2020 normals. Hourly patterns come from NOAA's HRRR hourly analysis from September 2014 to April 2026.
What to expect at Santa Clara in the next few days
No active National Weather Service alerts for this location.
Best time to go
The best window today is 11 AM to 2 PM, at about 54°F with a 2 mph wind (comfort 61).
Best day this week
Of the next 7 days, Friday looks best for Santa Clara, with a 60°F high and midday comfort near 74. Wednesday looks weakest (50).
Rain
Next good chance of rain: today (89%, about 0.29 in.).
Live weather map
Weather around Santa Clara right now
Overcast and 53° at Santa Clara right now.
About the live weather map for Santa Clara
The map centers on Santa Clara and stacks fog, satellite clouds, and precipitation radar on one view. Clouds come from the GOES-West satellite and rain from NOAA radar, and both show current conditions. Fog comes from our HRRR-based fog model, and the slider steps through its forecast for the next 12 hours.
Dots mark nearby places with their current temperature, colored by comfort score. Use the layer buttons to turn any layer off, or open the full map for every destination in the region.
Nearby Temperature Comparison
Conditions at nearby San Francisco Bay Area destinations
Tip: Bay Area temperatures can change by 20 to 30°F over a short distance because of microclimates.
Santa Clara vs nearby places
Typical summer conditions compared with Santa Clara, from the same NOAA HRRR hourly record. The list shows the closest places, then nearby places whose climate differs the most.
| Place | Distance | Summer afternoons | Morning fog | Afternoon wind | Compared with Santa Clara |
|---|---|---|---|---|---|
| Downtown San Jose | 3.9 mi | +3°F | 8% | 10 mph | a very similar climate |
| Sunnyvale | 4.6 mi | -1°F | 16% | 10 mph | a very similar climate |
| Campbell | 4.6 mi | +4°F | 8% | 9 mph | about 27% more rain a year and about 4°F warmer on summer afternoons |
| Purisima Creek Redwoods | 22.3 mi | -15°F | 57% | 7 mph | about twice as much rain a year and more summer morning fog (57% vs 11% of morning hours) |
| Bonny Doon | 23.9 mi | -9°F | 56% | 8 mph | about 3 times as much rain a year and more summer morning fog (56% vs 11% of morning hours) |
| Pescadero | 24.4 mi | -16°F | 55% | 10 mph | more summer morning fog (55% vs 11% of morning hours) and about 16°F cooler on summer afternoons |
Places with a climate like Santa Clara's
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Santa Clara climate comparisons mean
These cards compare recent conditions at Santa Clara with the available local baseline. Temperature and year-to-date rainfall use long-term normals when available. Fog, sunshine, wind, and comfort use the matching recent or modeled baseline identified on each card.
Positive and negative differences describe how Santa Clara departs from its own usual pattern. They should not be read as a direct comparison with another city or as a forecast beyond the period shown.
Santa Clara weather by month
August is the warmest month at Santa Clara, with an average high of 83°F. December is the coldest, with an average low of 40°F. February is the wettest month (3.0 in.), out of about 15.0 in. a year. Morning fog peaks in December, when fog or low cloud covers 19% of the hours from 6 to 10 AM. July has the clearest middays, with clouds covering about 6% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Santa Clara are June, September, and July. The best hours are usually 10 AM to 1 PM in June, 10 AM to 1 PM in September, and 10 AM to 1 PM in July.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 60°F | 40°F | 2.9 in | 7 | 14% | 29% | 5 mph | 9.9 h | 62 |
| Feb | 63°F | 43°F | 3.0 in | 7 | 11% | 25% | 7 mph | 10.8 h | 65 |
| Mar | 67°F | 44°F | 2.4 in | 7 | 10% | 29% | 8 mph | 11.9 h | 69 |
| Apr | 71°F | 46°F | 1.1 in | 5 | 6% | 22% | 9 mph | 13.2 h | 79 |
| May | 75°F | 50°F | 0.5 in | 3 | 6% | 18% | 10 mph | 14.2 h | 86 |
| Jun | 81°F | 54°F | 0.1 in | 1 | 8% | 8% | 11 mph | 14.7 h | 90 |
| Jul | 83°F | 56°F | 0.0 in | 0 | 13% | 6% | 10 mph | 14.5 h | 88 |
| Aug | 83°F | 56°F | 0.0 in | 1 | 12% | 7% | 10 mph | 13.5 h | 88 |
| Sep | 82°F | 54°F | 0.1 in | 1 | 8% | 12% | 9 mph | 12.3 h | 90 |
| Oct | 77°F | 50°F | 0.7 in | 3 | 10% | 14% | 8 mph | 11.1 h | 85 |
| Nov | 66°F | 44°F | 1.5 in | 5 | 12% | 20% | 6 mph | 10.1 h | 79 |
| Dec | 59°F | 40°F | 2.7 in | 7 | 19% | 31% | 5 mph | 9.6 h | 60 |
Morning fog is the share of hours from 6 to 10 AM with fog or low cloud. Midday cloud is the average from 11 AM to 3 PM, and afternoon wind is the average from 1 to 5 PM. The highlighted rows are the most comfortable months.
What makes Santa Clara's weather different
When the fog burns off
noonwhen December fog usually thins (22% foggy at 8 AM)
Fog or low cloud covers Santa Clara in 22% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by noon. April mornings are the least foggy (6%).
When the wind picks up
1 PMwhen afternoon wind builds, February–October
From February through October, wind at Santa Clara typically builds after 1 PM. In June it peaks around 4 PM, averaging 12 mph with 3% of those hours windy, while mornings average 3 mph.
Microclimate
+4°FCampbell, 4.6 mi away, on summer afternoons
Campbell, 4.6 miles away, runs about 4°F warmer than Santa Clara on summer afternoons.
Daylight
9.6–14.7 hof daylight, Dec to Jun
Days at Santa Clara range from about 9.6 hours in December to 14.7 hours in June. In mid-June the sun sets around 8:29 PM, and in mid-December around 4:56 PM.
Seasons at Santa Clara
- Warm seasonJun 24 – Sep 26 · highs 81°F+
The warm season lasts about 3.1 months, from Jun 24 to Sep 26, when the average high is 81°F or warmer. Highs peak around Aug 8 at about 83°F.
- Cool seasonNov 26 – Feb 27 · highs 65°F or lower
The cool season runs from Nov 26 to Feb 27, when the average high is 65°F or lower. The coldest nights come around Dec 8, with an average low near 40°F.
- Rainy seasonDec 4 – Mar 21 · 67% of the year's rain
The rainy season runs from Dec 4 to Mar 21, when a day has at least a 20% chance of measurable rain. That stretch brings 67% of the year's rain.
The dark line marks today. Season dates come from the smoothed daily NOAA 1991-2020 normals. Counting from Oct. 1, a typical year has its first inch of rain by Nov 7 and half of its annual total by Jan 29.
Days per year and extremes (Nov 1, 2024 to Oct 31, 2026)
This record runs from Nov 1, 2024 to Oct 31, 2026. Over this record, Santa Clara averaged 14 days a year at 90°F or hotter and 7 nights a year at or below freezing. It averaged 9 days a year with at least half an inch of rain and 0 afternoons with wind of 20 mph or more at 2 PM. About 56 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Jun 11, 2026 (100°F) and the coldest night was Jan 21, 2025 (29°F). The wettest day was Feb 5, 2025 (1.36 in.), and the strongest 2 PM gust was 32 mph on Mar 12, 2025.
- 14days at 90°F or hotter
- 7nights at or below freezing
- 9days with ½ in. of rain or more
- 0afternoons with 20+ mph wind
- 56mornings with 3+ hours of fog or low cloud
- Hottest day100°FJun 11, 2026
- Coldest night29°FJan 21, 2025
- Wettest day1.36 inFeb 5, 2025
- Strongest 2 PM gust32 mphMar 12, 2025
What shapes Santa Clara's weather
On some summer mornings, low clouds slide down the bay overnight and reach Santa Clara's north side first. They usually burn off by midmorning. When a heat wave stalls the breeze, often in September or early October, the whole city bakes. The flat, paved stadium and office districts then hold the heat into the evening.
The Santa Cruz Mountains to the southwest catch much of the rain from incoming winter storms. That leaves the valley floor in a partial rain shadow, a drier zone on the sheltered side of the range, with long dry spells between storms. On clear, calm winter nights cold air settles over the flat city. Mornings can be frosty, and wood smoke lingers near the ground.
Tips for visiting Santa Clara
Sit on Levi's west side for shade
The sunny seats at Levi's Stadium are on the east side, and the team has said FAA rules near the San Jose airport limit adding shade structures.
Plan for heat at early-fall day games
A heat wave in October 2024 brought Levi's Stadium a record 95°F kickoff temperature. On hot game days, wear a hat and sunscreen and keep drinking water.
Take light rail to the stadium
VTA light rail stops at Great America station on Tasman Drive, next to Levi's Stadium.
Visit the mission church any day
Mission Santa Clara de Asís, at the heart of the Santa Clara University campus, is open daily from 7 a.m. to 7 p.m.
Santa Clara through the seasons
- Spring (March–May)
- Spring is mild and gets drier as it goes, and the afternoon northwest breeze builds as the inland valleys warm.
- Summer (June–August)
- Summer is sunny and warm, with breezy afternoons that are strongest on the north side of town. Some mornings start under low clouds.
- Fall (September–October)
- September stays nearly as warm as August, and early-fall heat waves can stall the breeze. Day games then leave stadium crowds in full sun.
- Winter (November–February)
- Winter is the rainy season, with cold, still mornings between storms. Burning wood is illegal on winter Spare the Air alert days.
Activities and the weather that matters
- Football and concerts at Levi's Stadium: Afternoon events in September and October can be very hot on the east side. Evening kickoffs and the west sideline are easier.
- Visiting Mission Santa Clara: The mission church is a good stop any time of year. The campus is best for walking on mild spring days and cooler summer mornings.
- Theme park days at California's Great America: A park day means long hours in the sun on open pavement. Breezy summer afternoons help, but early-fall heat waves make shade and water essential.
Official sources and current conditions
- VTA: getting to Levi's Stadium
- VTA light rail
- Santa Clara University: Mission Church
- Bay Area Air District: Spare the Air alerts
Numbers on this page come from NOAA data. The text draws on the official sources linked above.
Historical Climate Data
Long-term weather patterns and climate data
Data sources: Recent temperatures come from NOAA URMA and recent precipitation from NOAA Stage IV. Fog, cloud, wind, humidity, and sunshine come from NOAA HRRR, and long-term baselines from NOAA 1991-2020 climate normals.
Climate Overview
Based on NOAA 30-year temperature/rain normals (1991-2020) with recent fog/sun baseline
🌟 Best Months to Visit
⚠️ Challenging Months
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| November 2024 | 85 | 64.8° / 43.1° | 6.6h | 1d | 1.86" | 22 |
| December 2024 | 79 | 63° / 42.9° | 5.5h | 7d | 2.72" | 14 |
| January 2025 | 87 | 62.4° / 37.4° | 7.1h | 2d | 0.04" | 24 |
| February 2025 | 81 | 63.7° / 42.4° | 6.8h | 3d | 3.88" | 17 |
| March 2025 | 86 | 64.6° / 44.8° | 8.2h | 4d | 1.43" | 26 |
| April 2025 | 93 | 70.3° / 47.9° | 9.5h | 1d | 0.51" | 27 |
| May 2025 | 96 | 76.2° / 51.3° | 12h | 0d | 0.01" | 31 |
| June 2025 | 95 | 76.5° / 54.4° | 12.5h | 0d | 0" | 30 |
| July 2025 | 93 | 78.4° / 58.1° | 11.8h | 2d | 0" | 31 |
| August 2025 | 92 | 82° / 59° | 10.9h | 6d | 0" | 31 |
| September 2025 | 92 | 81° / 61.5° | 9.7h | 2d | 0.2" | 30 |
| October 2025 | 90 | 74.3° / 52.2° | 8.1h | 4d | 1.47" | 26 |
| November 2025 | 79 | 66.3° / 47.4° | 6.3h | 10d | 2.77" | 14 |
| December 2025 | 72 | 60.2° / 43.6° | 4.9h | 15d | 2.37" | 7 |
| January 2026 | 83 | 63.8° / 40.6° | 6.5h | 4d | 2.29" | 22 |
| February 2026 | 82 | 66.1° / 44.9° | 6.6h | 5d | 2.76" | 20 |
| March 2026 | 95 | 78.1° / 49.1° | 9.7h | 0d | 0" | 30 |
| April 2026 | 90 | 70.5° / 49.8° | 9.1h | 2d | 1.63" | 24 |
| May 2026 | 94 | 74.4° / 53.4° | 11.5h | 3d | 0.33" | 31 |
| June 2026 | 94 | 80° / 57.4° | 12.1h | 0d | 0" | 29 |
| July 2026 | 94 | 79.8° / 58.5° | 11.6h | 0d | 0" | 30 |
| August 2026 | 93 | 80.7° / 59.7° | 10.7h | 0d | 0" | 31 |
| September 2026 | 94 | 80.2° / 56.2° | 10h | 1d | 0.03" | 30 |
| October 2026 | 90 | 77.8° / 51.9° | 8h | 1d | 0.1" | 27 |
Climate Trends
Average Temperature by Month
About the Santa Clara climate charts
The temperature chart compares average monthly highs and lows at Santa Clara, showing both the seasonal cycle and the typical day-to-night range. The comfort chart summarizes how often the combined weather pattern is favorable rather than judging temperature alone.
Precipitation shows the total recorded or modeled rainfall for each month at Santa Clara. Sunshine compares average bright-sky hours with the daylight available, while fog shows the average number of morning fog or low-cloud hours per day. Switch between the chart tabs to compare the same months across each measure.
Hourly Temperature, Fog, Wind, Cloud Cover, and Solar Radiation Patterns
Average local hour by month from 2014-09-30 to 2026-04-30
- Temperature: At Santa Clara, the warmest typical hour is 3 PM in August (81°F). The coldest is 7 AM in December (44°F).
- Fog: Fog or low cloud covers Santa Clara in 22% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by noon. April mornings are the least foggy (6%).
- Wind: From February through October, wind at Santa Clara typically builds after 1 PM. In June it peaks around 4 PM, averaging 12 mph with 3% of those hours windy, while mornings average 3 mph.
- Cloud Cover: July middays are the clearest at Santa Clara (6% average cloud cover), and December middays are the cloudiest (31%).
- Solar Radiation: The strongest typical sun at Santa Clara comes at 1 PM in June, averaging 985 W/m².
How to read the hourly heatmaps for Santa Clara
This heatmap shows how average temperature at Santa Clara changes by hour and month. Read left to right for the seasons and top to bottom for the time of day. Warmer colors mark the usual afternoon peaks, and cooler colors show overnight and winter lows.
This heatmap shows when fog or low cloud is most likely at Santa Clara. Darker cells mark the months and hours when fog has been most common. They help separate overnight or morning fog from cloud that tends to linger into the afternoon.
This heatmap shows the typical hourly wind pattern at Santa Clara through the year. It makes recurring afternoon wind, calmer overnight periods, and seasonal changes easier to compare than a single daily wind value.
This heatmap shows average cloud cover at Santa Clara for every month and hour. Use it to see whether cloudiness is mainly an overnight and morning pattern or commonly persists during the part of the day you plan to visit.
This heatmap shows the average solar radiation reaching Santa Clara by month and hour. Brighter cells indicate the strongest typical sun, while muted cells can reflect nighttime, shorter winter days, cloud cover, smoke, or terrain shading.
Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage. The red marker shows the current month and hour.
How recent months compared at Santa Clara
- October 2026 recap: October 2026 at Santa Clara averaged a high of 78°F, 1°F warmer than the 1991-2020 normal of 77°F. It brought 0.10 in. of rain, compared with a normal of 0.67 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 13.7 in. of rain to Santa Clara, 91% of the 15.0 in. normal.
Location Details
Santa Clara weather questions
Everything you need to know about weather and visiting Santa Clara
What is the weather like at Santa Clara today?
It's 53°F at Santa Clara right now, with a comfort score of 77 (great). Monday's forecast high at Santa Clara is 56°F, 10°F below the mid November normal of 66°F. The best window today is 11 AM to 2 PM, at about 54°F with a 2 mph wind (comfort 61).
What is the best month to visit Santa Clara?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Santa Clara are June, September, and July. The best hours are usually 10 AM to 1 PM in June, 10 AM to 1 PM in September, and 10 AM to 1 PM in July. The warm season lasts about 3.1 months, from Jun 24 to Sep 26, when the average high is 81°F or warmer. Highs peak around Aug 8 at about 83°F.
What are the warmest and coldest months at Santa Clara?
August is the warmest month at Santa Clara, with an average high of 83°F. December is the coldest, with an average low of 40°F.
When does the fog burn off at Santa Clara?
Fog or low cloud covers Santa Clara in 22% of 8 AM hours in December, the foggiest month. It usually thins to a third of that by noon. April mornings are the least foggy (6%).
When is it windiest at Santa Clara?
From February through October, wind at Santa Clara typically builds after 1 PM. In June it peaks around 4 PM, averaging 12 mph with 3% of those hours windy, while mornings average 3 mph.
How much rain does Santa Clara get?
February is the wettest month (3.0 in.), out of about 15.0 in. a year. The rainy season runs from Dec 4 to Mar 21, when a day has at least a 20% chance of measurable rain. That stretch brings 67% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 13.7 in. of rain to Santa Clara, 91% of the 15.0 in. normal.
How does Santa Clara weather compare with Campbell?
Campbell, 4.6 miles away, runs about 4°F warmer than Santa Clara on summer afternoons.
What kind of place is Santa Clara?
Santa Clara stretches across the flat middle of the valley, from the Santa Clara University campus north to Levi's Stadium on Tasman Drive. The campus is built around a mission first founded by Franciscans in 1777, and the stadium sits a few miles from the bay's southern sloughs. Between them lie neighborhoods, office parks, and the west flank of San Jose's airport. Its north end is closer to open bay water than any of the West Valley towns, and that shapes its afternoons.
What is Santa Clara weather like in November?
November at Santa Clara averages a high of 66°F and a low of 44°F, with 1.5 in. of rain over about 5 rainy days. About 12% of morning hours are foggy. Afternoon wind averages 6 mph.
More about Santa Clara weather
Guides that explain the weather here and nearby
- Levi's Stadium Weather: 49ers Game-Day Guide for 2026
- Flood Advisory vs. Flood Warning in the Bay Area: How to Know When to Act
- Temperature Inversions: Why Cold Air Gets Trapped in Bay Area Valleys
- How Bay Area Hills and Mountains Create Localized Rain
- Bay Area Ozone: Why Summer Smog Peaks in the Inland Valleys
- Coldest Temperature Ever in San Francisco and the Bay Area
Data sources and methods
- Monthly temperatures and precipitation: NOAA 1991-2020 normals.
- Fog, cloud, wind, sun, and comfort by hour and month: NOAA's HRRR hourly analysis from September 2014 to April 2026.
- Daily records and recent months: NOAA URMA and HRRR analyses, plus NOAA Stage IV precipitation.
- Nearby comparisons and regional rankings use the same hourly HRRR summaries for every destination in the region.
- Alerts: National Weather Service. Tides and ocean temperature: NOAA CO-OPS, where shown.
- All statements on this page are computed from these datasets, apart from the “What shapes the weather” guide, which cites its sources inline.
- NBC Sports Bay Area, 49ers can't add shade at Levi's Stadium (Aug 9, 2018) (accessed 2026-10-27)
- ABC7 News, 49ers fans brave 100-degree temps at Levi's Stadium (Oct 7, 2024) (accessed 2026-10-27)
- VTA, VTA to Levi's (accessed 2026-10-27)
- Santa Clara University, Mission Church (accessed 2026-10-27)
- Bay Area Air District, Spare the Air (accessed 2026-10-27)
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