San Francisco Weather in April
Average highs run from 36°C on April 1 to 35°C on April 30, and lows from 24°C to 25°C. Normal precipitation for the month is 27 mm over about 6 wet days.
April day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
April at a glance
- Average high
- 36°C
- Average low
- 25°C
- Precipitation
- 27 mm
- Reanalysis high
- 40°CApr 8, 2020
- Reanalysis low
- 20°CApr 17, 2004
- Daylight
- 12 h 16 min to 12 h 37 min
- Cloud cover
- 48%
- Humidity
- 57%
- Dew point
- 19°C
- Wind
- 10.4 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Apr 1 | 36°C | 24°C | 38°C 2013 | 22°C 2003 | 9% |
| Apr 2 | 36°C | 24°C | 39°C 1996 | 22°C 2003 | 10% |
| Apr 3 | 36°C | 24°C | 39°C 2016 | 22°C 2009 | 11% |
| Apr 4 | 36°C | 25°C | 39°C 2016 | 22°C 2009 | 11% |
| Apr 5 | 36°C | 25°C | 39°C 1998 | 22°C 2000 | 12% |
| Apr 6 | 36°C | 25°C | 39°C 1998 | 22°C 2000 | 14% |
| Apr 7 | 36°C | 25°C | 40°C 2020 | 23°C 2001 | 14% |
| Apr 8 | 36°C | 25°C | 40°C 2020 | 22°C 2014 | 16% |
| Apr 9 | 36°C | 25°C | 39°C 1992 | 22°C 2016 | 16% |
| Apr 10 | 36°C | 25°C | 39°C 1992 | 21°C 2014 | 16% |
| Apr 11 | 36°C | 25°C | 39°C 1998 | 23°C 2007 | 16% |
| Apr 12 | 36°C | 25°C | 40°C 1999 | 23°C 2007 | 16% |
| Apr 13 | 36°C | 25°C | 39°C 1999 | 23°C 1998 | 17% |
| Apr 14 | 36°C | 25°C | 38°C 2001 | 22°C 2006 | 18% |
| Apr 15 | 36°C | 25°C | 39°C 2005 | 22°C 2004 | 18% |
| Apr 16 | 36°C | 25°C | 39°C 2005 | 21°C 2004 | 19% |
| Apr 17 | 36°C | 25°C | 39°C 1997 | 20°C 2004 | 19% |
| Apr 18 | 35°C | 25°C | 39°C 2005 | 22°C 2004 | 19% |
| Apr 19 | 35°C | 25°C | 39°C 2005 | 22°C 2004 | 20% |
| Apr 20 | 35°C | 25°C | 38°C 2014 | 22°C 2004 | 20% |
| Apr 21 | 35°C | 25°C | 38°C 2009 | 23°C 2004 | 20% |
| Apr 22 | 35°C | 25°C | 39°C 1998 | 23°C 2004 | 21% |
| Apr 23 | 35°C | 25°C | 39°C 1998 | 22°C 2012 | 22% |
| Apr 24 | 35°C | 25°C | 39°C 1998 | 21°C 2012 | 24% |
| Apr 25 | 35°C | 25°C | 39°C 1998 | 21°C 2012 | 27% |
| Apr 26 | 35°C | 25°C | 38°C 2002 | 22°C 2012 | 30% |
| Apr 27 | 35°C | 25°C | 39°C 2020 | 22°C 2012 | 32% |
| Apr 28 | 35°C | 25°C | 39°C 2002 | 23°C 2012 | 34% |
| Apr 29 | 35°C | 25°C | 39°C 2001 | 22°C 2012 | 35% |
| Apr 30 | 35°C | 25°C | 39°C 2001 | 23°C 2012 | 37% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (CST).
- April 1
- sunrise 5:48 AM, sunset 6:04 PM
- April 30
- sunrise 5:31 AM, sunset 6:08 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.