Sunnyvale, CA Weather & Growing Conditions
Overnight
59°F
Mostly Clear
Mostly clear, with a low around 59. West northwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Mostly Clear | 3 mph WNW | 0% |
| Tuesday | 88°F | Sunny | 2 to 9 mph NNW | 0% |
| Tuesday Night | 59°F | Mostly Clear | 2 to 8 mph WNW | 0% |
| Wednesday | 85°F | Sunny | 2 to 8 mph WNW | 0% |
| Wednesday Night | 59°F | Mostly Clear | 1 to 8 mph WNW | 0% |
| Thursday | 84°F | Sunny | 1 to 9 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 2 to 9 mph NW | 0% |
| Friday | 89°F | Sunny | 2 to 9 mph NW | 0% |
| Friday Night | 62°F | Mostly Clear | 2 to 9 mph WNW | 0% |
| Saturday | 88°F | Sunny | 1 to 9 mph WNW | 0% |
| Saturday Night | 63°F | Mostly Clear | 2 to 9 mph W | 0% |
| Sunday | 84°F | Sunny | 2 to 10 mph W | 0% |
| Sunday Night | 60°F | Mostly Clear | 5 to 10 mph W | 0% |
| Monday | 81°F | Sunny | 3 to 10 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
10a
Explore more for Sunnyvale, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Moffett Federal Airfield, Ca (2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.