Sunnyvale, CA Weather & Growing Conditions
Today
90°F
Sunny
Sunny. High near 90, with temperatures falling to around 88 in the afternoon. North wind 2 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Sunny | 2 to 8 mph N | 0% |
| Tonight | 59°F | Mostly Clear | 2 to 7 mph NW | 0% |
| Wednesday | 88°F | Sunny | 2 to 7 mph WNW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 7 mph WNW | 0% |
| Thursday | 87°F | Sunny | 0 to 8 mph WNW | 0% |
| Thursday Night | 61°F | Mostly Clear | 2 to 8 mph NW | 0% |
| Friday | 91°F | Sunny | 1 to 8 mph NW | 0% |
| Friday Night | 62°F | Mostly Clear | 1 to 8 mph WNW | 0% |
| Saturday | 91°F | Sunny | 1 to 8 mph WNW | 0% |
| Saturday Night | 64°F | Mostly Clear | 2 to 8 mph W | 0% |
| Sunday | 87°F | Sunny | 2 to 9 mph W | 0% |
| Sunday Night | 60°F | Mostly Clear | 3 to 9 mph W | 0% |
| Monday | 83°F | Sunny | 3 to 9 mph WSW | 0% |
| Monday Night | 58°F | Mostly Clear | 3 to 9 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sunnyvale, CA
Last spring frost
Jan 6
First fall frost
Dec 23
Growing season
353 days
Hardiness zone
9b
Explore more for Sunnyvale, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Moffett Federal Airfield, Ca (3.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.