Climate normals · 1970–2000
Napa Climate
Napa is a city in United States (CA) with a population of about 80,434. Its average annual temperature is 15.3°C (60°F), with roughly 687 mm of rain per year.
15.3°C
Avg Temp
687
Precip (mm/yr)
Jul
Hottest Month
Dec
Coldest Month
Napa Climate
Napa has an average annual temperature of 15.3°C (60°F) and receives about 687 mm of precipitation per year. The warmest month is July and the coldest is December. Figures are 1970–2000 climate normals.
15.3°C
Avg Temp
687
Precip (mm/yr)
Jul
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 8° / 47° | 146 mm |
| February | 11° / 51° | 127 mm |
| March | 12° / 54° | 102 mm |
| April | 14° / 58° | 37 mm |
| May | 17° / 63° | 18 mm |
| June | 20° / 68° | 4 mm |
| July | 21° / 71° | 1 mm |
| August | 21° / 70° | 2 mm |
| September | 20° / 68° | 9 mm |
| October | 17° / 63° | 37 mm |
| November | 12° / 53° | 98 mm |
| December | 8° / 47° | 106 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 Napa
The most comfortable months to visit Napa are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is December (near 3°C low). January is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Napa are typically August, July and June, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Napa, United States has an average annual temperature of 15.3°C and about 687 mm of precipitation per year. The warmest month is July and the coldest is December.
In July, the hottest month, daily highs in Napa average about 31°C (87°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.