Climate normals · 1970–2000
Sunnyvale Climate
Sunnyvale is a city in United States (CA) with a population of about 155,805. Its average annual temperature is 15.6°C (60°F), with roughly 417 mm of rain per year.
15.6°C
Avg Temp
417
Precip (mm/yr)
Aug
Hottest Month
Dec
Coldest Month
Sunnyvale Climate
Sunnyvale has an average annual temperature of 15.6°C (60°F) and receives about 417 mm of precipitation per year. The warmest month is August and the coldest is December. Figures are 1970–2000 climate normals.
15.6°C
Avg Temp
417
Precip (mm/yr)
Aug
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 10° / 50° | 83 mm |
| February | 12° / 53° | 68 mm |
| March | 13° / 55° | 69 mm |
| April | 15° / 58° | 32 mm |
| May | 17° / 62° | 6 mm |
| June | 19° / 67° | 2 mm |
| July | 20° / 69° | 1 mm |
| August | 21° / 69° | 2 mm |
| September | 20° / 68° | 5 mm |
| October | 17° / 63° | 25 mm |
| November | 13° / 55° | 63 mm |
| December | 10° / 50° | 61 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Sunnyvale
The most comfortable months to visit Sunnyvale are typically August, July and September, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 27°C high). The coldest is December (near 5°C low). January is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Sunnyvale are typically August, July and September, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Sunnyvale, United States has an average annual temperature of 15.6°C and about 417 mm of precipitation per year. The warmest month is August and the coldest is December.
In August, the hottest month, daily highs in Sunnyvale average about 27°C (81°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.