Climate averages 1991–2020
Fairfield weather
in March.
A mild, moderately wet month: the 8th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
March is a mild month in Fairfield: daytime highs average 17.9°C and nights cool to about 7.7°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 79 mm of rain on roughly 8 days, which makes March a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 56 min on an average March day.
The nearest other city in this atlas is Vacaville (13 km away). In March its highs average 18.2°C, about as warm as Fairfield, with 79 mm of rain.
Among the 498 cities listed in the United States, Fairfield ranks joint 195th of 498 for the warmest March highs and joint 272nd of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; Fairfield is 2.9°C warmer than that mean.
From March to April, average highs rise by 2.8°C to 20.7°C, and monthly rainfall falls from 79 mm to 34 mm.
The annual picture
March 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 | 15.5°C6.4°C | 6.4°C | 108 | 9.1 | 10.711 h |
| March, selected | 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
March in nearby cities
- Vacaville in MarchUnited States · 13 kmHigh 18.2°C · Low 7.7°C · 79 mm rain
- Napa in MarchUnited States · 22 kmHigh 18.0°C · Low 7.5°C · 86 mm rain
- Vallejo in MarchUnited States · 25 kmHigh 17.7°C · Low 7.3°C · 80 mm rain
- Concord (California), United States in MarchUnited States · 30 kmHigh 17.8°C · Low 7.9°C · 71 mm rain
- Antioch in MarchUnited States · 34 kmHigh 18.0°C · Low 8.1°C · 69 mm rain
- Berkeley in MarchUnited States · 47 kmHigh 16.8°C · Low 7.5°C · 73 mm rain
- San Ramon in MarchUnited States · 52 kmHigh 17.0°C · Low 7.3°C · 70 mm rain
- Oakland in MarchUnited States · 53 kmHigh 17.0°C · Low 7.8°C · 73 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.