Sunnyvale, CA Weather & Growing Conditions
Today
80°F
Patchy Fog then Sunny
Patchy fog before 9am. Sunny. High near 80, with temperatures falling to around 77 in the afternoon. North northeast wind 1 to 10 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Patchy Fog then Sunny | 1 to 10 mph NNE | 0% |
| Tonight | 56°F | Mostly Cloudy | 2 to 9 mph NW | 0% |
| Sunday | 74°F | Mostly Cloudy | 2 to 8 mph WNW | 1% |
| Sunday Night | 56°F | Mostly Cloudy then Patchy Fog | 2 to 8 mph W | 1% |
| Monday | 77°F | Patchy Fog then Mostly Sunny | 1 to 9 mph WSW | 0% |
| Monday Night | 56°F | Partly Cloudy | 1 to 9 mph WSW | 0% |
| Tuesday | 78°F | Patchy Fog then Mostly Sunny | 1 to 9 mph W | 0% |
| Tuesday Night | 57°F | Mostly Clear | 0 to 9 mph WSW | 0% |
| Wednesday | 85°F | Sunny | 0 to 8 mph WSW | 0% |
| Wednesday Night | 60°F | Mostly Clear | 0 to 8 mph WNW | 0% |
| Thursday | 87°F | Sunny | 0 to 9 mph WSW | 0% |
| Thursday Night | 60°F | Mostly Clear | 2 to 9 mph W | 0% |
| Friday | 82°F | Mostly Sunny | 1 to 9 mph WSW | 0% |
| Friday Night | 58°F | Partly Cloudy | 2 to 9 mph SW | 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 Sep 19, 2026.