Sunnyvale, CA Weather
Sunnyvale, 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 84.30 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 41.00 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 27 degrees Fahrenheit, and fairly limited during winter with an average difference of 18 degrees Fahrenheit.
The annual average precipitation at Sunnyvale is 15.08 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is January with an average rainfall of 3.03 Inches.
Weather Data
Weather Warnings
| Heat advisory in effect until 6 pm pdt Friday . |
Current Conditions
|
Fair, 85°F | Humidity: 35% | Dewpoint: 54°F |
| Wind Speed: NW 8 MPH | Heat Index: 83°F | ||
| Barometer: 29.70 in. | Wind Chill: 85°F |
Weather Forecast
 | Tonight: Clear. Lows in the mid 60s to around 70. Light winds. | |
| Lo: 66°F | ||
 | Hi: 99°F | Friday: Sunny. Continued hot. Highs from 95 to 102. Late afternoon seabreeze 5 to 15 mph. |
| Lo: 60°F | ||
| Hi: 83°F | Saturday: Sunny. Cooler. Highs in the lower to mid 80s. Afternoon seabreeze 10 to 20 mph. |
| Lo: 55°F | ||
| Hi: 80°F | Sunday: Areas of morning low clouds and fog. Otherwise sunny. Highs in the upper 70s to mid 80s. |
| Lo: 56°F | ||
| Hi: 85°F | Tuesday: Clear. Highs in the 80s. Lows in the mid 50s to lower 60s. |
| Lo: 56°F | ||
| Hi: 85°F | Tuesday: Clear. Highs in the 80s. Lows in the mid 50s to lower 60s. |
| Lo: 60°F | ||
| Hi: 86°F | Wednesday: Mostly clear. Highs in the mid 80s to lower 90s. Lows in the upper 50s to lower 60s. |
| Lo: 60°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waning Crescent Moon | Civil Twilight: 6:08 AM PDT |
Sunrise: 6:35 AM PDT |
| Sunset: 7:43 PM PDT |
Civil Twilight: 8:09 PM PDT |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 59.3 | 63.4 | 67.0 | 72.1 | 76.7 | 81.8 | 84.3 | 84.0 | 82.2 | 75.9 | 65.3 | 58.9 | 72.6 |
| Mean °F | 50.5 | 54.0 | 56.7 | 60.2 | 64.3 | 68.6 | 70.9 | 70.9 | 69.5 | 64.1 | 55.5 | 50.0 | 61.3 |
| Min °F | 41.7 | 44.6 | 46.4 | 48.3 | 51.8 | 55.4 | 57.5 | 57.7 | 56.7 | 52.3 | 45.6 | 41.0 | 49.9 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 3.03 | 2.84 | 2.69 | 1.02 | 0.44 | 0.10 | 0.06 | 0.07 | 0.23 | 0.87 | 1.73 | 2.00 | 15.08 |
