Cupertino, CA Weather
Cupertino, CA climate is warm during summer when temperatures tend to be in the 70's and cool during winter when temperatures tend to be in the 50's.
The warmest month of the year is July with an average maximum temperature of 85.40 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 38.10 degrees Fahrenheit.
Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 30 degrees Fahrenheit, and moderate during winter with an average difference of 21 degrees Fahrenheit.
The annual average precipitation at Cupertino is 22.64 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 5.11 Inches.
Weather Data
Current Conditions
|
Fair, 64°F | Humidity: 34% | Dewpoint: 35°F |
| Wind Speed: W 3.5 MPH (3 KT) | Heat Index: 64°F | ||
| Barometer: 30.16 in. | Wind Chill: 64°F |
Weather Forecast
 | Tonight: Mostly clear in the evening then becoming mostly cloudy. Patchy fog. Lows around 40. North winds around 5 mph. | |
| Lo: 40°F | ||
| Hi: 65°F | Tuesday: Partly cloudy in the morning then becoming mostly sunny. Patchy fog in the morning. Highs in the 60s. North winds around 5 mph. |
| Lo: 41°F | ||
 | Hi: 66°F | Wednesday: Sunny. Highs in the mid 60s to lower 70s. North winds around 5 mph. |
| Lo: 41°F | ||
| Hi: 65°F | Thanksgiving day: Mostly sunny. Highs in the mid 60s. |
| Lo: 41°F | ||
 | Hi: 60°F | Friday: Partly cloudy. Highs around 60. |
| Lo: 41°F | ||
| Hi: 60°F | Saturday: Mostly clear. Lows in the lower 40s. Highs near 60. |
| Lo: 41°F | ||
| Hi: 60°F | Sunday: Mostly clear. Lows in the lower 40s. Highs near 60. |
| Lo: 41°F |
Moon, Sunrise and Sunset
 |
Moon Phase: First Quarter Moon | Civil Twilight: 6:26 AM PST |
Sunrise: 6:55 AM PST |
| Sunset: 4:53 PM PST |
Civil Twilight: 5:21 PM PST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 58.5 | 62.4 | 65.5 | 70.7 | 75.9 | 81.8 | 85.4 | 84.9 | 82.5 | 75.6 | 64.7 | 58.2 | 72.2 |
| Mean °F | 48.7 | 51.8 | 54.2 | 57.6 | 62.1 | 66.9 | 70.3 | 69.9 | 67.9 | 62.1 | 53.6 | 48.2 | 59.4 |
| Min °F | 38.8 | 41.1 | 42.9 | 44.4 | 48.2 | 52.0 | 55.1 | 54.8 | 53.3 | 48.6 | 42.4 | 38.1 | 46.6 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 5.11 | 4.77 | 3.93 | 1.19 | 0.46 | 0.10 | 0.04 | 0.08 | 0.24 | 1.02 | 2.47 | 3.23 | 22.64 |
