Climate averages 1991–2020
Napa weather
in February.
A mild, wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
February is a mild month in Napa: daytime highs average 15.9°C and nights cool to about 6.3°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 117 mm of rain on roughly 9 days, which makes February a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 10 h 45 min on an average February day.
The nearest other city in this atlas is Vallejo (22 km away). In February its highs average 15.6°C, about as warm as Napa, with 107 mm of rain.
Among the 498 cities listed in the United States, Napa ranks joint 153rd of 498 for the warmest February highs and joint 462nd of 498 for the driest February (rainfall, lowest first). The mean February high of those 498 cities is 11.1°C; Napa is 4.8°C warmer than that mean.
From February to March, average highs rise by 2.1°C to 18.0°C, and monthly rainfall falls from 117 mm to 86 mm.
The annual picture
February in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Napa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 14.4°C5.3°C | 5.3°C | 116 | 9.4 | 9.810 h |
| February, selected | 15.9°C6.3°C | 6.3°C | 117 | 8.7 | 10.711 h |
| March | 18.0°C7.5°C | 7.5°C | 86 | 8.4 | 11.912 h |
| April | 20.7°C9.0°C | 9.0°C | 38 | 4.9 | 13.213 h |
| May | 24.6°C11.5°C | 11.5°C | 20 | 3.2 | 14.214 h |
| June | 28.9°C13.9°C | 13.9°C | 4.7 | 0.9 | 14.815 h |
| July | 30.7°C14.7°C | 14.7°C | 0.4 | 0.1 | 14.515 h |
| August | 30.6°C14.9°C | 14.9°C | 0.7 | 0.2 | 13.714 h |
| September | 29.5°C14.6°C | 14.6°C | 2.0 | 0.4 | 12.512 h |
| October | 25.1°C12.6°C | 12.6°C | 26 | 2.9 | 11.211 h |
| November | 18.3°C8.4°C | 8.4°C | 56 | 5.9 | 10.110 h |
| December | 14.2°C5.6°C | 5.6°C | 110 | 9.4 | 9.610 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
February in nearby cities
- Vallejo in FebruaryUnited States · 22 kmHigh 15.6°C · Low 6.1°C · 107 mm rain
- Fairfield in FebruaryUnited States · 22 kmHigh 15.5°C · Low 6.4°C · 108 mm rain
- Vacaville in FebruaryUnited States · 27 kmHigh 15.8°C · Low 6.4°C · 108 mm rain
- Santa Rosa, United States in FebruaryUnited States · 41 kmHigh 15.7°C · Low 5.0°C · 149 mm rain
- Concord (California), United States in FebruaryUnited States · 42 kmHigh 15.6°C · Low 6.6°C · 96 mm rain
- Berkeley in FebruaryUnited States · 47 kmHigh 15.1°C · Low 6.3°C · 97 mm rain
- Antioch in FebruaryUnited States · 53 kmHigh 15.7°C · Low 6.8°C · 91 mm rain
- Oakland in FebruaryUnited States · 55 kmHigh 15.3°C · Low 6.6°C · 97 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Napa) is explained once on the Napa year overview and on the Sources, method and limits page.