Sunnyvale, CA Weather Forecast
Santa Clara County, California
Live radar, warnings and storm tracking for Sunnyvale, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Sunnyvale
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Sunnyvale, CA at a glance
Sunnyvale is home to about 151,967 people in Santa Clara County, across 22 square miles. It ranks 37th by population of 450 places in California with a forecast here. The nearest neighbour with its own forecast is Mountain View, 3 miles away.
- County
- Santa Clara County
- Population
- 151,967 2023 est.
- Land area
- 22 sq mi
- People per sq mi
- 6,889
- Forecast point
- 37.3858°N, 122.0263°W
How well can the network see Sunnyvale?
The nearest Doppler radar is KMUX (San Francisco, CA), to the SSE. Its lowest scan passes about 950 ft above Sunnyvale. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Sunnyvale show up clearly. Sunnyvale is closer to its radar than 88% of US cities.
The closest weather station is KNUQ (Moffett Fed Airfld). Close enough that its readings are the conditions in town.
Forecasts near Sunnyvale
- Mountain View, CA3 mi
- Santa Clara, CA4 mi
- Los Altos, CA4 mi
- Cupertino, CA5 mi
- Los Altos Hills, CA6 mi
- Palo Alto, CA6 mi
- Saratoga, CA8 mi
- Milpitas, CA8 mi
Elsewhere in California
Los AngelesSan DiegoSan JoseSan FranciscoFresnoSacramentoAll California forecasts →