Sunnyvale, California Weather Forecast
Today in Sunnyvale: mostly sunny with a high near 67°F and a low around 53°F. Rain chance 2%. No day tops a 20% rain chance through Thursday. Highs run 65 to 71°F through Thursday.
Forecast updated 1:05 AM PDT, Oct 23
Active Weather Alerts
7-Day Forecast for Sunnyvale
Today 10/23
67°53°
Sat 10/24
70°47°
Sun 10/25
71°48°
Mon 10/26
68°48°
Tue 10/27
67°47°
Wed 10/28
66°47°
Thu 10/29
65°48°
Next 24 Hours
| Now | Sat12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | 9 PM | 10 PM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sky |  | | | | | | | | | | | | | | | | | | | | | | | |
| Temp | 55° | 54° | 53° | 52° | 51° | 50° | 48° | 47° | 47° | 47° | 53° | 58° | 62° | 65° | 68° | 69° | 70° | 70° | 69° | 66° | 63° | 60° | 58° | 57° |
| Rain | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% | 0% |
| Wind | W 5 | SW 4 | WSW 3 | WSW 3 | WSW 2 | W 2 | W 3 | NW 3 | WNW 3 | WNW 3 | NNW 3 | N 3 | NNW 3 | NNW 3 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 3 | NW 1 | NW 0 | W 0 | SSW 1 |
Growing Conditions
Growing degree days
3,496
since Apr 1, base 50°F
Rain, last 30 days
0.09 in
model analysis
Rain, year to date
13.85 in
since Jan 1
2-inch soil temperature
62°F
yesterday, daily average
Reference ET, last 7 days
0.73 in
FAO-56 grass reference
Through Oct 22. Season totals use model analysis for this point and update every morning.
Soil, ET and spray tools for Sunnyvale →
Current Stats & Observations
NWS Forecast
About Sunnyvale Weather
Sunnyvale sits at about 66 feet above sea level in Santa Clara County, California. About 152,703 people live in the Sunnyvale area. Official forecasts and warnings for the area come from the National Weather Service MTR office, and the nearest NEXRAD radar site is KMUX. The city is in USDA plant hardiness zone 10a, where the coldest winter night typically falls between 30 to 35°F. Freezing temperatures are rare here.
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