Climate averages 1991–2020
Fairfield weather
in February.
A mild, wet month: the 10th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
February is a mild month in Fairfield: daytime highs average 15.5°C and nights cool to about 6.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 108 mm of rain on roughly 9 days, which makes February a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 45 min on an average February day.
The nearest other city in this atlas is Vacaville (13 km away). In February its highs average 15.8°C, about as warm as Fairfield, with 108 mm of rain.
Among the 498 cities listed in the United States, Fairfield ranks joint 176th of 498 for the warmest February highs and joint 436th of 498 for the driest February (rainfall, lowest first). The mean February high of those 498 cities is 11.1°C; Fairfield is 4.4°C warmer than that mean.
From February to March, average highs rise by 2.3°C to 17.9°C, and monthly rainfall falls from 108 mm to 79 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
Fairfield climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.7°C5.4°C | 5.4°C | 109 | 9.2 | 9.810 h |
| February, selected | 15.5°C6.4°C | 6.4°C | 108 | 9.1 | 10.711 h |
| March | 17.9°C7.7°C | 7.7°C | 79 | 8.2 | 11.912 h |
| April | 20.7°C9.1°C | 9.1°C | 34 | 4.8 | 13.213 h |
| May | 24.5°C11.4°C | 11.4°C | 18 | 3.2 | 14.214 h |
| June | 28.4°C13.5°C | 13.5°C | 4.2 | 0.9 | 14.815 h |
| July | 29.9°C14.3°C | 14.3°C | 0.4 | 0.1 | 14.515 h |
| August | 29.8°C14.6°C | 14.6°C | 1.0 | 0.2 | 13.614 h |
| September | 28.9°C14.3°C | 14.3°C | 1.5 | 0.4 | 12.512 h |
| October | 24.5°C12.5°C | 12.5°C | 24 | 2.7 | 11.211 h |
| November | 17.8°C8.7°C | 8.7°C | 50 | 5.8 | 10.110 h |
| December | 13.6°C5.8°C | 5.8°C | 101 | 9.0 | 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
- Vacaville in FebruaryUnited States · 13 kmHigh 15.8°C · Low 6.4°C · 108 mm rain
- Napa in FebruaryUnited States · 22 kmHigh 15.9°C · Low 6.3°C · 117 mm rain
- Vallejo in FebruaryUnited States · 25 kmHigh 15.6°C · Low 6.1°C · 107 mm rain
- Concord (California), United States in FebruaryUnited States · 30 kmHigh 15.6°C · Low 6.6°C · 96 mm rain
- Antioch in FebruaryUnited States · 34 kmHigh 15.7°C · Low 6.8°C · 91 mm rain
- Berkeley in FebruaryUnited States · 47 kmHigh 15.1°C · Low 6.3°C · 97 mm rain
- San Ramon in FebruaryUnited States · 52 kmHigh 15.1°C · Low 6.1°C · 94 mm rain
- Oakland in FebruaryUnited States · 53 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 Fairfield) is explained once on the Fairfield year overview and on the Sources, method and limits page.
Vacaville lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.