Climate averages 1991–2020
San Francisco weather
in March.
A mild, moderately wet month: the 9th 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 San Francisco: daytime highs average 15.7°C and nights cool to about 8.1°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 81 mm of rain on roughly 9 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 Daly City (9 km away). In March its highs average 14.2°C, 1.5°C cooler than San Francisco, with 81 mm of rain.
Among the 498 cities listed in the United States, San Francisco ranks joint 258th of 498 for the warmest March highs and joint 282nd of 498 for the driest March (rainfall, lowest first). The mean March high of those 498 cities is 14.9°C; San Francisco is 0.8°C warmer than that mean.
From March to April, average highs rise by 1.3°C to 17.0°C, and monthly rainfall falls from 81 mm to 37 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
San Francisco climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.6°C6.1°C | 6.1°C | 109 | 10.1 | 9.910 h |
| February | 14.6°C7.0°C | 7.0°C | 113 | 9.5 | 10.811 h |
| March, selected | 15.7°C8.1°C | 8.1°C | 81 | 9.3 | 11.912 h |
| April | 17.0°C8.8°C | 8.8°C | 37 | 5.0 | 13.113 h |
| May | 18.8°C10.4°C | 10.4°C | 18 | 2.8 | 14.214 h |
| June | 21.0°C11.7°C | 11.7°C | 4.3 | 0.8 | 14.715 h |
| July | 21.5°C12.6°C | 12.6°C | 0.3 | 0.1 | 14.515 h |
| August | 22.1°C13.2°C | 13.2°C | 0.7 | 0.1 | 13.614 h |
| September | 22.7°C13.0°C | 13.0°C | 1.5 | 0.4 | 12.512 h |
| October | 21.0°C11.8°C | 11.8°C | 24 | 3.1 | 11.311 h |
| November | 16.6°C8.7°C | 8.7°C | 56 | 6.1 | 10.210 h |
| December | 13.5°C6.3°C | 6.3°C | 108 | 10.1 | 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
- Daly City in MarchUnited States · 9 kmHigh 14.2°C · Low 8.1°C · 81 mm rain
- Oakland in MarchUnited States · 13 kmHigh 17.0°C · Low 7.8°C · 73 mm rain
- Berkeley in MarchUnited States · 17 kmHigh 16.8°C · Low 7.5°C · 73 mm rain
- San Mateo in MarchUnited States · 25 kmHigh 16.1°C · Low 8.5°C · 82 mm rain
- Hayward in MarchUnited States · 32 kmHigh 17.0°C · Low 8.0°C · 70 mm rain
- Redwood City in MarchUnited States · 36 kmHigh 16.2°C · Low 8.6°C · 82 mm rain
- San Ramon in MarchUnited States · 39 kmHigh 17.0°C · Low 7.3°C · 70 mm rain
- Vallejo in MarchUnited States · 39 kmHigh 17.7°C · Low 7.3°C · 80 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 San Francisco) is explained once on the San Francisco year overview and on the Sources, method and limits page.
Daly City lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.