San Francisco weather in April: San Francisco, California: normal highs, lows, rain and records for April
San Francisco in April has a normal high of 63°F and a normal low of 50°F, a daily mean of 56°F, holding near 63°F all month. Measurable precipitation falls on 7 days in a normal April, 1.60 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 17°C and low of 10°C, 41 mm of precipitation in April.
- NOAA stationSan Francisco Downtown
- Station IDUSW00023272
- Location37.77°N 122.43°W
- Elevation150 ft (46 m)
- Population827,526
- Jan 58° 47°
- Feb 60° 48°
- Mar 62° 49°
- Apr 63° 50°
- May 64° 51°
- Jun 67° 53°
- Jul 66° 54°
- Aug 68° 56°
- Sep 70° 56°
- Oct 70° 54°
- Nov 64° 51°
- Dec 58° 47°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Francisco in April?
The normal high is 63°F and the normal low 50°F, for a daily mean of 56.4°F. April is 0.9°F warmer than March and 1.4°F cooler than May. April is the 8th warmest month of the year in San Francisco and the 6th wettest. From one year to the next April's mean temperature typically moves about 1.8°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 55°F and 58°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 29%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 63°F | 49°F | 29% | 18% |
| April 8 | 63°F | 49°F | 27% | 16% |
| April 15 | 63°F | 50°F | 24% | 14% |
| April 22 | 63°F | 50°F | 20% | 12% |
| April 30 | 63°F | 50°F | 17% | 10% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 28, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 63°F | 49°F | 29% | 18% | 12 h 30 min |
| April 2 | 63°F | 49°F | 28% | 18% | 12 h 40 min |
| April 3 | 63°F | 49°F | 28% | 18% | 12 h 40 min |
| April 4 | 63°F | 49°F | 28% | 17% | 12 h 40 min |
| April 5 | 63°F | 49°F | 27% | 17% | 12 h 40 min |
| April 6 | 63°F | 49°F | 27% | 17% | 12 h 50 min |
| April 7 | 63°F | 49°F | 27% | 17% | 12 h 50 min |
| April 8 | 63°F | 49°F | 27% | 16% | 12 h 50 min |
| April 9 | 63°F | 49°F | 26% | 16% | 12 h 50 min |
| April 10 | 63°F | 50°F | 26% | 16% | 13 h |
| April 11 | 63°F | 50°F | 25% | 16% | 13 h |
| April 12 | 63°F | 50°F | 25% | 15% | 13 h |
| April 13 | 63°F | 50°F | 24% | 15% | 13 h |
| April 14 | 63°F | 50°F | 24% | 15% | 13 h 10 min |
| April 15 | 63°F | 50°F | 24% | 14% | 13 h 10 min |
| April 16 | 63°F | 50°F | 23% | 14% | 13 h 10 min |
| April 17 | 63°F | 50°F | 23% | 14% | 13 h 10 min |
| April 18 | 63°F | 50°F | 22% | 13% | 13 h 20 min |
| April 19 | 63°F | 50°F | 22% | 13% | 13 h 20 min |
| April 20 | 63°F | 50°F | 21% | 12% | 13 h 20 min |
| April 21 | 63°F | 50°F | 21% | 12% | 13 h 20 min |
| April 22 | 63°F | 50°F | 20% | 12% | 13 h 20 min |
| April 23 | 63°F | 50°F | 20% | 12% | 13 h 30 min |
| April 24 | 63°F | 50°F | 20% | 11% | 13 h 30 min |
| April 25 | 63°F | 50°F | 19% | 11% | 13 h 30 min |
| April 26 | 63°F | 50°F | 19% | 11% | 13 h 30 min |
| April 27 | 63°F | 50°F | 18% | 11% | 13 h 40 min |
| April 28 | 63°F | 50°F | 18% | 10% | 13 h 40 min |
| April 29 | 63°F | 50°F | 18% | 10% | 13 h 40 min |
| April 30 | 63°F | 50°F | 17% | 10% | 13 h 40 min |
- Normal high
- 63°FApril average
- Normal low
- 50°FApril average
- Precipitation
- 1.60 inmonth total
- Days with precipitation
- 70.01 inch or more
- Daylight
- 12 h 30 min to 13 h 40 minApril 1 to April 30
- Days at 70°F or more
- 5
- Days at 80°F or more
- 1
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023272; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Francisco in April?
On a given April day the chance of 0.01 inch or more is 23% on average, highest around April 1 (29%). In all, 1.60 in falls on 7 days of a normal April.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023272.
What are the records for April in San Francisco?
The warmest April temperature on this station's record (since 1874) is 94°F, on April 8, 1989; the coldest is 40°F, on April 7, 1875. The wettest April brought 10.06 in (1880).
The April mean against the 1991-2020 normal of 56.4°F: 2021 53.8°F (−2.6), 2022 55.7°F (−0.7), 2023 54.3°F (−2.1), 2025 55.7°F (−0.7), 2026 58.0°F (+1.6). 1 of 5 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 53.8°F | −2.6°F | 0.17 in |
| 2022 | 55.7°F | −0.7°F | 1.08 in |
| 2023 | 54.3°F | −2.1°F | 0.24 in |
| 2025 | 55.7°F | −0.7°F | 0.28 in |
| 2026 | 58.0°F | +1.6°F | 3.65 in |
Source: records: ACIS, station USW00023272; recent months: ACIS, station USW00023272. Records and recent months use complete months only.
How does April in San Francisco compare across California?
Across the 219 places PlainClimate covers in California, April normal highs run from 49°F in Tahoma to 87°F in Brawley; San Francisco's is 63°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.