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Weather & Climate
Cupertino, California, United States
Overview
Climate data and monthly weather averages for Cupertino.
Key Metrics
Annual Avg
13.9°C
Summer Avg
19°C
Winter Avg
8.6°C
Record High
45.3°C
Record Low
-5.1°C
Annual Precipitation
510.3 mm
Avg Humidity
72%
Summer Humidity
64%
Winter Humidity
83%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 23.1° | 8.3° | -5.1° | 88 | 84% | 76 | 56.1 |
| Feb | 24.1° | 9.2° | -3.3° | 90.2 | 83% | 94 | 47.9 |
| Mar | 28.5° | 10.7° | -1.3° | 76.9 | 82% | 143 | 43.1 |
| Apr | 33.2° | 11.9° | 0.5° | 40.5 | 78% | 180 | 38.2 |
| May | 38° | 14.5° | 3.6° | 14.3 | 73% | 208 | 39.2 |
| Jun | 40.5° | 17.6° | 5.8° | 3.9 | 66% | 218 | 33.2 |
| Jul | 45.3° | 19.6° | 7.8° | 0.3 | 62% | 203 | 30 |
| Aug | 42.8° | 19.8° | 8.1° | 0.6 | 63% | 180 | 29.5 |
| Sep | 44.8° | 19.4° | 6.9° | 3 | 60% | 154 | 32.3 |
| Oct | 39.3° | 16.3° | 2.1° | 25.4 | 63% | 123 | 43.5 |
| Nov | 32.1° | 11.7° | -3° | 53.1 | 73% | 84 | 48 |
| Dec | 21° | 8.4° | -4.8° | 114.1 | 81% | 66 | 51.3 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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