Campbell Weather
Town • San Francisco Bay Area
Campbell is a small, flat city in the middle of the west Santa Clara Valley, wedged between San Jose's Willow Glen and Los Gatos. Los Gatos Creek and its paved trail run past the east side of downtown. The walkable core along Campbell Avenue holds the city-run historical museum, and the Ainsley House sits a few blocks away. VTA light rail stops downtown, and the creek trail leads south past the percolation ponds toward Vasona Lake.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Campbell weather today and through the year
It's 53°F at Campbell right now (feels like 50°F), with 6 mph wind and a comfort score of 77. Monday's forecast high at Campbell is 56°F, 11°F below the mid November normal of 67°F. The best window today is 11 AM to 2 PM, at about 54°F with a 3 mph wind (comfort 61).
August is the warmest month at Campbell, with an average high of 85°F. December is the coldest, with an average low of 39°F. February is the wettest month (4.0 in.), out of about 19.0 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Campbell are June, September, and July. The best hours are usually 9 AM to noon in June, 10 AM to 1 PM in September, and 9 AM to noon in July.
Campbell has no hills of its own, so its weather is the valley floor's. It sits roughly halfway between the bay and the Santa Cruz Mountains. The afternoon bay breeze reaches it later and weaker than it reaches Santa Clara, so summer afternoons run warmer. They are still not as warm as the far southern and eastern corners of San Jose.
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 Campbell 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 3 mph wind (comfort 61).
Best day this week
Of the next 7 days, Friday looks best for Campbell, with a 60°F high and midday comfort near 74. Wednesday looks weakest (49).
Rain
Next good chance of rain: today (89%, about 0.32 in.).
Live weather map
Weather around Campbell right now
Overcast and 53° at Campbell right now.
About the live weather map for Campbell
The map centers on Campbell 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.
Campbell vs nearby places
Typical summer conditions compared with Campbell, 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 Campbell |
|---|---|---|---|---|---|
| Willow Glen | 3.5 mi | -1°F | 9% | 10 mph | a very similar climate |
| Los Gatos | 3.6 mi | +1°F | 8% | 8 mph | a very similar climate |
| Saratoga | 4.3 mi | same | 10% | 8 mph | a very similar climate |
| Santa Cruz Westside | 23.9 mi | -25°F | 44% | 15 mph | about 25°F cooler on summer afternoons and more summer morning fog (44% vs 8% of morning hours) |
| Año Nuevo State Park | 24.3 mi | -25°F | 42% | 14 mph | about 25°F cooler on summer afternoons and more summer morning fog (42% vs 8% of morning hours) |
| Año Nuevo Point | 24.7 mi | -25°F | 42% | 14 mph | about 25°F cooler on summer afternoons and more summer morning fog (42% vs 8% of morning hours) |
Places with a climate like Campbell's
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Campbell climate comparisons mean
These cards compare recent conditions at Campbell 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 Campbell 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.
Campbell weather by month
August is the warmest month at Campbell, with an average high of 85°F. December is the coldest, with an average low of 39°F. February is the wettest month (4.0 in.), out of about 19.0 in. a year. 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 Campbell are June, September, and July. The best hours are usually 9 AM to noon in June, 10 AM to 1 PM in September, and 9 AM to noon in July.
| Month | Avg high | Avg low | Rain | Rainy days | Morning fog | Midday cloud | Afternoon wind | Daylight | Comfort |
|---|---|---|---|---|---|---|---|---|---|
| Jan | 60°F | 39°F | 3.8 in | 8 | 11% | 30% | 5 mph | 9.9 h | 62 |
| Feb | 63°F | 42°F | 4.0 in | 8 | 9% | 25% | 7 mph | 10.8 h | 66 |
| Mar | 67°F | 43°F | 3.0 in | 7 | 7% | 29% | 8 mph | 11.9 h | 70 |
| Apr | 71°F | 45°F | 1.3 in | 5 | 3% | 23% | 8 mph | 13.1 h | 80 |
| May | 76°F | 49°F | 0.6 in | 3 | 5% | 18% | 9 mph | 14.2 h | 84 |
| Jun | 82°F | 52°F | 0.1 in | 2 | 6% | 8% | 9 mph | 14.7 h | 88 |
| Jul | 84°F | 55°F | 0.0 in | 0 | 9% | 6% | 9 mph | 14.5 h | 85 |
| Aug | 85°F | 55°F | 0.0 in | 1 | 8% | 7% | 9 mph | 13.5 h | 85 |
| Sep | 83°F | 53°F | 0.1 in | 1 | 5% | 11% | 8 mph | 12.3 h | 87 |
| Oct | 77°F | 49°F | 0.8 in | 4 | 7% | 13% | 7 mph | 11.1 h | 85 |
| Nov | 67°F | 43°F | 1.8 in | 5 | 9% | 20% | 6 mph | 10.1 h | 80 |
| Dec | 60°F | 39°F | 3.6 in | 8 | 14% | 31% | 5 mph | 9.6 h | 61 |
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 Campbell's weather different
When the wind picks up
1 PMwhen afternoon wind builds, February–November
From February through November, wind at Campbell typically builds after 1 PM. In June it peaks around 4 PM, averaging 10 mph with 2% of those hours windy, while mornings average 3 mph.
Hot hours
2 habove 85°F on a typical August afternoon
In August, the average temperature stays at or above 85°F for 2 hours a day.
Daylight
9.6–14.7 hof daylight, Dec to Jun
Days at Campbell 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 Campbell
- Warm seasonJun 25 – Sep 26 · highs 82°F+
The warm season lasts about 3.1 months, from Jun 25 to Sep 26, when the average high is 82°F or warmer. Highs peak around Aug 8 at about 85°F.
- Cool seasonNov 27 – Feb 27 · highs 65°F or lower
The cool season runs from Nov 27 to Feb 27, when the average high is 65°F or lower. The coldest nights come around Dec 8, with an average low near 39°F.
- Rainy seasonNov 24 – Mar 29 · 77% of the year's rain
The rainy season runs from Nov 24 to Mar 29, when a day has at least a 20% chance of measurable rain. That stretch brings 77% 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 5 and half of its annual total by Jan 28.
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, Campbell averaged 25 days a year at 90°F or hotter and 3 nights a year at or below freezing. It averaged 10 days a year with at least half an inch of rain and 1 afternoon with wind of 20 mph or more at 2 PM. About 33 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Jun 11, 2026 (101°F) and the coldest night was Jan 27, 2025 (30°F). The wettest day was Feb 5, 2025 (1.62 in.), and the strongest 2 PM gust was 50 mph on Mar 12, 2025.
- 25days at 90°F or hotter
- 3nights at or below freezing
- 10days with ½ in. of rain or more
- 1afternoon with 20+ mph wind
- 33mornings with 3+ hours of fog or low cloud
- Hottest day101°FJun 11, 2026
- Coldest night30°FJan 27, 2025
- Wettest day1.62 inFeb 5, 2025
- Strongest 2 PM gust50 mphMar 12, 2025
What shapes Campbell's weather
Campbell's flat ground shows most at night. On clear, calm nights cold air drains off the mountains and down the Los Gatos Creek corridor, then pools on the flats. Campbell's winter mornings are often colder than those in hillside Saratoga or the upper parts of Los Gatos, a few miles away. Those same still nights trap wood smoke near the ground.
Winter storms arrive from the southwest, and the Santa Cruz Mountains wring out much of their rain before it crosses the valley. Campbell gets noticeably less rain than Los Gatos at the foot of the mountains, and long dry, sunny spells between storms are typical.
Tips for visiting Campbell
Ride light rail downtown
VTA light rail stops in downtown Campbell and connects it with Diridon Station and downtown San Jose.
Walk the creek trail to Vasona
The paved Los Gatos Creek Trail follows a year-round creek through Campbell to the percolation ponds and Vasona Lake Park, and is free to use.
Let dogs run only at the dog park
Leashed dogs are allowed in all Campbell parks, but not in children's play areas. The off-leash area is the Los Gatos Creek County Dog Park.
Plan museum visits Friday to Sunday
The Campbell Historical Museum and the Ainsley House open Friday to Sunday, 11 a.m. to 3 p.m. The Ainsley House closes every year from January through March.
Campbell through the seasons
- Spring (March–May)
- Spring brings mild, mostly dry days as the rain tapers off. The Ainsley House reopens after its January-to-March closure.
- Summer (June–August)
- Summer is sunny and warm, with a light breeze arriving late in the afternoon. Mornings are the comfortable time on the creek trail.
- Fall (September–October)
- September stays nearly as warm as August as the bay breeze weakens, and warm evenings suit downtown's outdoor tables.
- Winter (November–February)
- Winter is cool, with cold, still mornings between storms. Wood smoke builds up on calm nights, and burning wood is illegal on Spare the Air alert days.
Activities and the weather that matters
- Cycling the Los Gatos Creek Trail: The trail is flat and paved, and mornings are best. On summer afternoons the ride back north often heads into the breeze.
- Downtown dining: Outdoor tables on Campbell Avenue are best on warm summer and fall evenings. Winter nights cool quickly after sunset.
- Dog walking: The county dog park along the creek is most pleasant early on summer days, before the afternoon sun.
Official sources and current conditions
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 | 64.9° / 43.3° | 6.7h | 1d | 2.02" | 22 |
| December 2024 | 79 | 63.3° / 43° | 5.5h | 4d | 3.15" | 18 |
| January 2025 | 87 | 62.4° / 38.1° | 7.2h | 1d | 0.03" | 25 |
| February 2025 | 81 | 63.7° / 42.7° | 6.8h | 2d | 4.72" | 17 |
| March 2025 | 88 | 64.6° / 44.6° | 8.4h | 1d | 2.08" | 25 |
| April 2025 | 94 | 71.1° / 47.5° | 9.7h | 0d | 0.19" | 27 |
| May 2025 | 96 | 77.9° / 50.8° | 12.1h | 0d | 0.03" | 31 |
| June 2025 | 96 | 79.5° / 53.9° | 12.5h | 1d | 0" | 30 |
| July 2025 | 95 | 81.8° / 57.7° | 12h | 2d | 0" | 31 |
| August 2025 | 92 | 85.3° / 58.6° | 11.1h | 1d | 0" | 31 |
| September 2025 | 92 | 82.5° / 61° | 9.6h | 0d | 0.34" | 30 |
| October 2025 | 92 | 74.8° / 51.9° | 8.2h | 1d | 1.69" | 29 |
| November 2025 | 82 | 66.6° / 47.4° | 6.5h | 10d | 2.96" | 17 |
| December 2025 | 76 | 61° / 43.7° | 5.2h | 9d | 3.27" | 11 |
| January 2026 | 84 | 63.8° / 41.2° | 6.8h | 3d | 2.88" | 23 |
| February 2026 | 82 | 66.4° / 45° | 6.6h | 2d | 3.55" | 18 |
| March 2026 | 95 | 79° / 49.3° | 9.7h | 0d | 0" | 30 |
| April 2026 | 90 | 71° / 49.4° | 9.2h | 0d | 2.03" | 24 |
| May 2026 | 95 | 75.7° / 52.9° | 11.4h | 2d | 0.48" | 30 |
| June 2026 | 95 | 81.8° / 56.8° | 12.3h | 0d | 0" | 29 |
| July 2026 | 94 | 82.8° / 58.3° | 11.6h | 0d | 0.04" | 30 |
| August 2026 | 94 | 84.2° / 59.4° | 10.8h | 0d | 0" | 31 |
| September 2026 | 94 | 81.9° / 55.8° | 10.1h | 1d | 0.07" | 29 |
| October 2026 | 89 | 79.3° / 52° | 8.2h | 1d | 0.13" | 27 |
Climate Trends
Average Temperature by Month
About the Campbell climate charts
The temperature chart compares average monthly highs and lows at Campbell, 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 Campbell. 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 Campbell, the warmest typical hour is 3 PM in August (86°F). The coldest is 7 AM in January (44°F).
- Wind: From February through November, wind at Campbell typically builds after 1 PM. In June it peaks around 4 PM, averaging 10 mph with 2% of those hours windy, while mornings average 3 mph.
- Cloud Cover: July middays are the clearest at Campbell (6% average cloud cover), and December middays are the cloudiest (31%).
- Solar Radiation: The strongest typical sun at Campbell comes at 1 PM in June, averaging 990 W/m².
How to read the hourly heatmaps for Campbell
This heatmap shows how average temperature at Campbell 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 Campbell. 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 Campbell 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 Campbell 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 Campbell 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 Campbell
- October 2026 recap: October 2026 at Campbell averaged a high of 79°F, 2°F warmer than the 1991-2020 normal of 77°F. It brought 0.13 in. of rain, compared with a normal of 0.76 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 17.0 in. of rain to Campbell, 89% of the 19.0 in. normal.
Location Details
Campbell weather questions
Everything you need to know about weather and visiting Campbell
What is the weather like at Campbell today?
It's 53°F at Campbell right now, with a comfort score of 77 (great). Monday's forecast high at Campbell is 56°F, 11°F below the mid November normal of 67°F. The best window today is 11 AM to 2 PM, at about 54°F with a 3 mph wind (comfort 61).
What is the best month to visit Campbell?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Campbell are June, September, and July. The best hours are usually 9 AM to noon in June, 10 AM to 1 PM in September, and 9 AM to noon in July. The warm season lasts about 3.1 months, from Jun 25 to Sep 26, when the average high is 82°F or warmer. Highs peak around Aug 8 at about 85°F.
What are the warmest and coldest months at Campbell?
August is the warmest month at Campbell, with an average high of 85°F. December is the coldest, with an average low of 39°F.
When is it windiest at Campbell?
From February through November, wind at Campbell typically builds after 1 PM. In June it peaks around 4 PM, averaging 10 mph with 2% of those hours windy, while mornings average 3 mph.
How much rain does Campbell get?
February is the wettest month (4.0 in.), out of about 19.0 in. a year. The rainy season runs from Nov 24 to Mar 29, when a day has at least a 20% chance of measurable rain. That stretch brings 77% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 17.0 in. of rain to Campbell, 89% of the 19.0 in. normal.
What kind of place is Campbell?
Campbell is a small, flat city in the middle of the west Santa Clara Valley, wedged between San Jose's Willow Glen and Los Gatos. Los Gatos Creek and its paved trail run past the east side of downtown. The walkable core along Campbell Avenue holds the city-run historical museum, and the Ainsley House sits a few blocks away. VTA light rail stops downtown, and the creek trail leads south past the percolation ponds toward Vasona Lake.
What is Campbell weather like in November?
November at Campbell averages a high of 67°F and a low of 43°F, with 1.8 in. of rain over about 5 rainy days. Afternoon wind averages 6 mph.
More about Campbell weather
Guides that explain the weather here and nearby
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.
- VTA, Light Rail Travel Information (accessed 2026-10-27)
- Visit Silicon Valley, Los Gatos Creek Trail (accessed 2026-10-27)
- City of Campbell, Dog-Friendly Parks and Facilities (accessed 2026-10-27)
- Campbell Museums (City of Campbell) (accessed 2026-10-27)
- Bay Area Air District, Spare the Air (accessed 2026-10-27)
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