Cupertino Weather
Town • San Francisco Bay Area
Cupertino runs from the flat valley floor along Stevens Creek Boulevard up to the oak foothills where Stevens Creek leaves its canyon in the Santa Cruz Mountains. Apple's ring-shaped headquarters fills the east side, with a public visitor center and roof terrace on North Tantau Avenue. The west side is creek country, with Blackberry Farm and McClellan Ranch along Stevens Creek. Farther up Montebello Road, the regional open space district's Picchetti Ranch keeps a winery dating to the 1880s.
Plan your week
10-Day Forecast
Hour by hour
Hourly Forecast
Current Conditions
Comfort Breakdown
Cupertino weather today and through the year
It's 53°F at Cupertino right now (feels like 50°F), with 7 mph wind and a comfort score of 77. Monday's forecast high at Cupertino is 56°F, 10°F below the mid November normal of 66°F. The best window today is 10 AM to 1 PM, at about 54°F with a 5 mph wind (comfort 58).
August is the warmest month at Cupertino, with an average high of 83°F. December is the coldest, with an average low of 39°F. February is the wettest month (4.2 in.), out of about 20.5 in. a year. By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Cupertino 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.
Cupertino spans two settings within a few miles. The east side around Apple Park is open valley floor, while the west side tucks against Monte Bello Ridge and the mouth of Stevens Canyon. The Santa Cruz Mountains keep the ocean out, so summer marine air usually arrives from the north, pushed down the bay overnight. On some summer mornings it brings low clouds that tend to burn off by midmorning.
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 Cupertino in the next few days
No active National Weather Service alerts for this location.
Best time to go
The best window today is 10 AM to 1 PM, at about 54°F with a 5 mph wind (comfort 58).
Best day this week
Of the next 7 days, Friday looks best for Cupertino, with a 60°F high and midday comfort near 74. Wednesday looks weakest (49).
Rain
Next good chance of rain: today (88%, about 0.36 in.).
Live weather map
Weather around Cupertino right now
Overcast and 53° at Cupertino right now.
About the live weather map for Cupertino
The map centers on Cupertino 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.
Cupertino vs nearby places
Typical summer conditions compared with Cupertino, 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 Cupertino |
|---|---|---|---|---|---|
| Rancho San Antonio | 2.7 mi | -1°F | 16% | 9 mph | a very similar climate |
| Sunnyvale | 3.2 mi | -4°F | 16% | 10 mph | about 4°F cooler on summer afternoons |
| Saratoga | 4.1 mi | +1°F | 10% | 8 mph | a very similar climate |
| Año Nuevo State Park | 21.9 mi | -24°F | 42% | 14 mph | about 24°F cooler on summer afternoons and more summer morning fog (42% vs 12% of morning hours) |
| Año Nuevo Point | 22.4 mi | -24°F | 42% | 14 mph | about 24°F cooler on summer afternoons and more summer morning fog (42% vs 12% of morning hours) |
| Half Moon Bay | 23.8 mi | -19°F | 64% | 8 mph | more summer morning fog (64% vs 12% of morning hours) and about 19°F cooler on summer afternoons |
Places with a climate like Cupertino's
- Gilroy (34 mi away): nearly the same temperatures every month
- Almaden Quicksilver County Park (15 mi away): nearly the same temperatures every month
- Benicia (51 mi away): nearly the same temperatures every month
Climate Dashboard
Current conditions vs. NOAA normals and recent destination baseline
What the Cupertino climate comparisons mean
These cards compare recent conditions at Cupertino 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 Cupertino 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.
Cupertino weather by month
August is the warmest month at Cupertino, with an average high of 83°F. December is the coldest, with an average low of 39°F. February is the wettest month (4.2 in.), out of about 20.5 in. a year. July has the clearest middays, with clouds covering about 9% of the sky from 11 AM to 3 PM.
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Cupertino 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 | 40°F | 4.1 in | 8 | 11% | 30% | 6 mph | 9.9 h | 62 |
| Feb | 63°F | 42°F | 4.2 in | 8 | 10% | 26% | 7 mph | 10.8 h | 65 |
| Mar | 67°F | 43°F | 3.2 in | 7 | 7% | 30% | 8 mph | 11.9 h | 68 |
| Apr | 70°F | 45°F | 1.4 in | 5 | 5% | 24% | 8 mph | 13.1 h | 79 |
| May | 75°F | 49°F | 0.6 in | 3 | 6% | 20% | 9 mph | 14.2 h | 83 |
| Jun | 81°F | 52°F | 0.1 in | 2 | 9% | 10% | 9 mph | 14.7 h | 89 |
| Jul | 83°F | 55°F | 0.0 in | 0 | 13% | 9% | 9 mph | 14.5 h | 86 |
| Aug | 83°F | 55°F | 0.0 in | 1 | 15% | 10% | 9 mph | 13.5 h | 85 |
| Sep | 82°F | 53°F | 0.1 in | 1 | 9% | 13% | 8 mph | 12.3 h | 88 |
| Oct | 77°F | 49°F | 0.8 in | 4 | 9% | 14% | 7 mph | 11.1 h | 86 |
| Nov | 66°F | 43°F | 2.0 in | 6 | 10% | 20% | 6 mph | 10.1 h | 80 |
| Dec | 60°F | 39°F | 4.0 in | 8 | 14% | 31% | 6 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 Cupertino's weather different
When the wind picks up
1 PMwhen afternoon wind builds, February–October
From February through October, wind at Cupertino typically builds after 1 PM. In June it peaks around 4 PM, averaging 10 mph with 1% of those hours windy, while mornings average 3 mph.
Daylight
9.6–14.7 hof daylight, Dec to Jun
Days at Cupertino 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 Cupertino
- Warm seasonJun 26 – Sep 26 · highs 81°F+
The warm season lasts about 3.1 months, from Jun 26 to Sep 26, when the average high is 81°F or warmer. Highs peak around Aug 8 at about 83°F.
- Cool seasonNov 28 – Feb 24 · highs 64°F or lower
The cool season runs from Nov 28 to Feb 24, when the average high is 64°F or lower. The coldest nights come around Dec 8, with an average low near 39°F.
- Rainy seasonNov 16 – Apr 2 · 80% of the year's rain
The rainy season runs from Nov 16 to Apr 2, when a day has at least a 20% chance of measurable rain. That stretch brings 80% 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 3 and half of its annual total by Jan 27.
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, Cupertino averaged 14 days a year at 90°F or hotter and no freezing nights. It averaged 11 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 40 mornings a year had 3 or more hours of fog or low cloud.
In the same record, the hottest day was Jun 11, 2026 (99°F) and the coldest night was Jan 28, 2025 (34°F). The wettest day was Feb 5, 2025 (1.53 in.), and the strongest 2 PM gust was 52 mph on Mar 12, 2025.
- 14days at 90°F or hotter
- 0nights at or below freezing
- 11days with ½ in. of rain or more
- 1afternoon with 20+ mph wind
- 40mornings with 3+ hours of fog or low cloud
- Hottest day99°FJun 11, 2026
- Coldest night34°FJan 28, 2025
- Wettest day1.53 inFeb 5, 2025
- Strongest 2 PM gust52 mphMar 12, 2025
What shapes Cupertino's weather
Afternoons belong to the bay breeze, which comes in from the northwest and has warmed over land by the time it gets here. That makes Cupertino a little warmer on summer afternoons than Sunnyvale and Mountain View, which sit closer to the bay. It stays a little cooler than the inland corners of San Jose that the breeze reaches last.
After dark, cool air drains out of Stevens Canyon and settles along the creek. Blackberry Farm and McClellan Ranch can feel chilly on summer evenings and near freezing on clear winter mornings, while homes on the slopes above stay milder. In winter the mountains lift incoming storms, and the foothill side of town collects more rain than the flats near Interstate 280 and De Anza Boulevard.
Tips for visiting Cupertino
Go up Apple's roof terrace
The Apple Park Visitor Center at 10600 North Tantau Avenue has a roof terrace shaded by curved carbon-fiber fins, with a view of the main building.
Hike the shaded canyons on hot days
At Picchetti Ranch, madrone, oak, and bay trees shade the forested canyons, and the 1.9-mile Zinfandel Trail runs through fern-filled shade toward Stevens Creek County Park.
Carry your own water uphill
Drinking water usually isn't available on the open space district's preserves. Plan on about two quarts per person for a two-hour hike.
Leave dogs home for Picchetti
Dogs aren't allowed at Picchetti Ranch, apart from service dogs.
Keep dogs on the creek trail
At Blackberry Farm, pets are allowed only on the Stevens Creek Trail, on a leash no longer than 6 feet. They are not allowed in picnic sites or the pool area.
Cupertino through the seasons
- Spring (March–May)
- The foothills turn green and days are mild. Spring is a good time to look for frogs, newts, and ducks at the ponds of Picchetti Ranch.
- Summer (June–August)
- Some mornings start under low clouds that clear by midmorning, then afternoons turn warm and breezy. Blackberry Farm's two pools are the local hot-day stop, open on a summer swim schedule.
- Fall (September–October)
- September is nearly as warm as August, and October afternoons are still warm as the bay breeze weakens. Dry offshore winds, which blow from the hot interior toward the coast, raise the fire danger in the foothills above Stevens Canyon.
- Winter (November–February)
- Winter is the rainy season, and the foothills get more rain than the flats. The coldest clear nights between storms can leave light frost in low spots along Stevens Creek. On winter Spare the Air days, called when smoke and soot are forecast to build up, burning wood is illegal.
Activities and the weather that matters
- Wine tasting at Picchetti: Tastings run in the historic winery building and on the adjoining picnic areas, which are at their best on mild spring and fall afternoons.
- Hiking the foothill preserves: Picchetti Ranch has 3.7 miles of trails, and the Zinfandel Trail looks out over Stevens Creek Reservoir. Clear days after winter rain bring the sharpest views south to Mount Umunhum.
- Walking the Stevens Creek Trail: The stretch between Blackberry Farm and McClellan Ranch follows the creek and stays pleasant on warm afternoons, though it holds cool air early and late.
- Swimming at Blackberry Farm: Swimming here is a summer and early-fall activity. The two pools draw the biggest crowds on hot weekends.
Official sources and current conditions
- City of Cupertino: Blackberry Farm
- Midpen: Picchetti Ranch Preserve
- Apple Park Visitor Center
- 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 | 84 | 64° / 45.3° | 6.6h | 1d | 2.03" | 22 |
| December 2024 | 78 | 61.9° / 44.7° | 5.3h | 5d | 3.01" | 15 |
| January 2025 | 86 | 61° / 40.4° | 7.1h | 2d | 0.04" | 23 |
| February 2025 | 81 | 62.7° / 44.1° | 7.1h | 3d | 4.41" | 17 |
| March 2025 | 88 | 63.8° / 45.5° | 8.5h | 0d | 1.7" | 26 |
| April 2025 | 93 | 69.4° / 48.2° | 9.3h | 0d | 0.52" | 26 |
| May 2025 | 97 | 76.5° / 51.7° | 12.2h | 0d | 0.01" | 31 |
| June 2025 | 97 | 77.1° / 54.1° | 12.5h | 0d | 0" | 30 |
| July 2025 | 95 | 78.7° / 57.7° | 11.8h | 0d | 0" | 31 |
| August 2025 | 93 | 82.5° / 58.9° | 11h | 3d | 0" | 31 |
| September 2025 | 93 | 81° / 61.3° | 9.7h | 1d | 0.18" | 29 |
| October 2025 | 91 | 73.7° / 53.4° | 8.1h | 0d | 1.44" | 29 |
| November 2025 | 82 | 65.6° / 48.9° | 6.6h | 10d | 3.04" | 16 |
| December 2025 | 76 | 59.8° / 44.8° | 5.3h | 7d | 2.71" | 12 |
| January 2026 | 84 | 63° / 43.1° | 6.8h | 2d | 2.67" | 24 |
| February 2026 | 82 | 65.3° / 46.2° | 6.7h | 2d | 3.25" | 20 |
| March 2026 | 95 | 77.7° / 50.9° | 9.7h | 0d | 0" | 30 |
| April 2026 | 90 | 69.7° / 50° | 9.1h | 0d | 1.89" | 25 |
| May 2026 | 94 | 74.2° / 53.2° | 11.4h | 2d | 0.23" | 30 |
| June 2026 | 95 | 80.2° / 57° | 12.4h | 0d | 0" | 29 |
| July 2026 | 95 | 80.9° / 58.2° | 11.7h | 0d | 0" | 31 |
| August 2026 | 94 | 81° / 59.2° | 10.8h | 1d | 0" | 31 |
| September 2026 | 94 | 80.2° / 56.4° | 10h | 1d | 0.04" | 29 |
| October 2026 | 91 | 77.5° / 53.3° | 8.2h | 3d | 0.11" | 29 |
Climate Trends
Average Temperature by Month
About the Cupertino climate charts
The temperature chart compares average monthly highs and lows at Cupertino, 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 Cupertino. 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 Cupertino, the warmest typical hour is 3 PM in August (84°F). The coldest is 7 AM in December (45°F).
- Wind: From February through October, wind at Cupertino typically builds after 1 PM. In June it peaks around 4 PM, averaging 10 mph with 1% of those hours windy, while mornings average 3 mph.
- Cloud Cover: July middays are the clearest at Cupertino (9% average cloud cover), and December middays are the cloudiest (31%).
- Solar Radiation: The strongest typical sun at Cupertino comes at 1 PM in June, averaging 992 W/m².
How to read the hourly heatmaps for Cupertino
This heatmap shows how average temperature at Cupertino 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 Cupertino. 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 Cupertino 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 Cupertino 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 Cupertino 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 Cupertino
- October 2026 recap: October 2026 at Cupertino averaged a high of 77°F, close to the 1991-2020 normal of 77°F. It brought 0.11 in. of rain, compared with a normal of 0.83 in.
- Rain year: The 2025-26 rain year (Oct. 1 to Sep. 30) brought 15.3 in. of rain to Cupertino, 74% of the 20.5 in. normal.
Location Details
Cupertino weather questions
Everything you need to know about weather and visiting Cupertino
What is the weather like at Cupertino today?
It's 53°F at Cupertino right now, with a comfort score of 77 (great). Monday's forecast high at Cupertino is 56°F, 10°F below the mid November normal of 66°F. The best window today is 10 AM to 1 PM, at about 54°F with a 5 mph wind (comfort 58).
What is the best month to visit Cupertino?
By typical temperature, wind, cloud, humidity, and rain odds, the most comfortable months at Cupertino 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 26 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 Cupertino?
August is the warmest month at Cupertino, with an average high of 83°F. December is the coldest, with an average low of 39°F.
When is it windiest at Cupertino?
From February through October, wind at Cupertino typically builds after 1 PM. In June it peaks around 4 PM, averaging 10 mph with 1% of those hours windy, while mornings average 3 mph.
How much rain does Cupertino get?
February is the wettest month (4.2 in.), out of about 20.5 in. a year. The rainy season runs from Nov 16 to Apr 2, when a day has at least a 20% chance of measurable rain. That stretch brings 80% of the year's rain. The 2025-26 rain year (Oct. 1 to Sep. 30) brought 15.3 in. of rain to Cupertino, 74% of the 20.5 in. normal.
What kind of place is Cupertino?
Cupertino runs from the flat valley floor along Stevens Creek Boulevard up to the oak foothills where Stevens Creek leaves its canyon in the Santa Cruz Mountains. Apple's ring-shaped headquarters fills the east side, with a public visitor center and roof terrace on North Tantau Avenue. The west side is creek country, with Blackberry Farm and McClellan Ranch along Stevens Creek. Farther up Montebello Road, the regional open space district's Picchetti Ranch keeps a winery dating to the 1880s.
What is Cupertino weather like in November?
November at Cupertino averages a high of 66°F and a low of 43°F, with 2.0 in. of rain over about 6 rainy days. Afternoon wind averages 6 mph.
More about Cupertino 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.
- Apple, Apple Park Visitor Center (accessed 2026-10-27)
- Midpeninsula Regional Open Space District, Picchetti Ranch Preserve (accessed 2026-10-27)
- City of Cupertino, Blackberry Farm (accessed 2026-10-27)
- Bay Area Air District, Spare the Air (accessed 2026-10-27)
Rendered 2026-11-15T12:16:21.001Z.