Climate normals · 1970–2000
Santa Rosa Climate
Santa Rosa is a city in United States (CA) with a population of about 178,127. Its average annual temperature is 14.9°C (59°F), with roughly 865 mm of rain per year.
14.9°C
Avg Temp
865
Precip (mm/yr)
Jul
Hottest Month
Dec
Coldest Month
Santa Rosa Climate
Santa Rosa has an average annual temperature of 14.9°C (59°F) and receives about 865 mm of precipitation per year. The warmest month is July and the coldest is December. Figures are 1970–2000 climate normals.
14.9°C
Avg Temp
865
Precip (mm/yr)
Jul
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 9° / 48° | 184 mm |
| February | 11° / 52° | 158 mm |
| March | 12° / 53° | 126 mm |
| April | 14° / 57° | 46 mm |
| May | 16° / 62° | 21 mm |
| June | 19° / 67° | 5 mm |
| July | 21° / 69° | 2 mm |
| August | 20° / 69° | 3 mm |
| September | 20° / 67° | 12 mm |
| October | 17° / 62° | 49 mm |
| November | 12° / 53° | 125 mm |
| December | 9° / 48° | 134 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 Santa Rosa
The most comfortable months to visit Santa Rosa are typically July, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is December (near 3°C low). January is usually the wettest month.
Where to stay near Santa Rosa
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Frequently Asked Questions
The most comfortable months to visit Santa Rosa are typically July, August and September, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Santa Rosa, United States has an average annual temperature of 14.9°C and about 865 mm of precipitation per year. The warmest month is July and the coldest is December.
In July, the hottest month, daily highs in Santa Rosa average about 30°C (85°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.