San Francisco De Borja Weather in May
Average highs run from 23°C on May 1 to 22°C on May 31, and lows from 16°C to 14°C. Normal precipitation for the month is 0 mm over about 0 wet days.
May day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 23°C
- Average low
- 15°C
- Precipitation
- 0 mm
- Record high
- 30°CMay 11, 2017
- Record low
- 8°CMay 11, 1976
- Daylight
- 11 h 40 min to 11 h 28 min
- Cloud cover
- 54%
- Humidity
- 68%
- Dew point
- 11°C
- Wind
- 11.2 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 | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 23°C | 16°C | 27°C 2015 | 12°C 1968 | 0% |
| May 2 | 23°C | 16°C | 30°C 1983 | 13°C 1968 | 0% |
| May 3 | 23°C | 16°C | 28°C 1983 | 13°C 1966 | 0% |
| May 4 | 23°C | 16°C | 29°C 1992 | 15°C 1967 | 0% |
| May 5 | 23°C | 16°C | 29°C 1983 | 14°C 1968 | 0% |
| May 6 | 23°C | 15°C | 29°C 1983 | 11°C 1968 | 0% |
| May 7 | 23°C | 15°C | 29°C 1983 | 14°C 1975 | 0% |
| May 8 | 23°C | 15°C | 29°C 1983 | 12°C 1968 | 1% |
| May 9 | 23°C | 15°C | 27°C 1997 | 12°C 1968 | 1% |
| May 10 | 23°C | 15°C | 29°C 1983 | 14°C 1981 | 1% |
| May 11 | 23°C | 15°C | 30°C 2017 | 8°C 1976 | 1% |
| May 12 | 23°C | 15°C | 27°C 1997 | 10°C 1976 | 1% |
| May 13 | 23°C | 15°C | 26°C 2017 | 13°C 1986 | 1% |
| May 14 | 23°C | 15°C | 26°C 1998 | 13°C 1977 | 1% |
| May 15 | 23°C | 15°C | 29°C 1983 | 15°C 1973 | 1% |
| May 16 | 23°C | 15°C | 28°C 1997 | 13°C 1968 | 1% |
| May 17 | 23°C | 15°C | 26°C 1992 | 13°C 1975 | 1% |
| May 18 | 23°C | 15°C | 30°C 1983 | 15°C 1966 | 1% |
| May 19 | 23°C | 15°C | 29°C 1983 | 14°C 1986 | 1% |
| May 20 | 23°C | 15°C | 29°C 1983 | 13°C 1981 | 0% |
| May 21 | 23°C | 15°C | 25°C 1997 | 13°C 1982 | 0% |
| May 22 | 23°C | 15°C | 28°C 1983 | 14°C 1968 | 0% |
| May 23 | 23°C | 14°C | 28°C 1983 | 11°C 1966 | 0% |
| May 24 | 23°C | 14°C | 27°C 1997 | 12°C 1966 | 0% |
| May 25 | 23°C | 14°C | 27°C 1997 | 13°C 1966 | 0% |
| May 26 | 22°C | 14°C | 28°C 1983 | 13°C 1973 | 0% |
| May 27 | 22°C | 14°C | 28°C 1983 | 13°C 1979 | 0% |
| May 28 | 22°C | 14°C | 28°C 1983 | 10°C 1968 | 0% |
| May 29 | 22°C | 14°C | 27°C 1998 | 13°C 1978 | 0% |
| May 30 | 22°C | 14°C | 25°C 2012 | 13°C 1985 | 0% |
| May 31 | 22°C | 14°C | 28°C 1983 | 14°C 2000 | 0% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-5).
- May 1
- sunrise 6:15 AM, sunset 5:55 PM
- May 31
- sunrise 6:22 AM, sunset 5:50 PM
Other months
Sources
Records: NOAA GHCN-Daily, station PEM00084628, every year on file, quality-flagged values removed. 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.