Potrero Weather in May
Average highs run from 75°F on May 1 to 83°F on May 31, and lows from 41°F to 43°F. Normal precipitation for the month is 0.38 in over about 2 wet days.
May day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
May at a glance
- Average high
- 79°F
- Average low
- 42°F
- Precipitation
- 0.38 in
- Record high
- 102°FMay 15, 2014
- Record low
- 41°FMay 1, 1999
- Chance of a freeze
- 43%
- Days of 90°F or more
- 4.7
- Daylight
- 13 h 29 min to 14 h 09 min
- Cloud cover
- 35%
- Humidity
- 48%
- Dew point
- 39°F
- Wind
- 10.5 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| May 1 | 75°F | 41°F | 96°F 2014 | 41°F 1999 | 11% | 0% |
| May 2 | 76°F | 41°F | 98°F 2004 | 45°F 2002 | 10% | 0% |
| May 3 | 76°F | 41°F | 101°F 2004 | 47°F 2002 | 10% | 0% |
| May 4 | 76°F | 41°F | 86°F 2018 | 47°F 1999 | 10% | 0% |
| May 5 | 76°F | 41°F | 85°F 2020 | 43°F 1999 | 10% | 0% |
| May 6 | 76°F | 42°F | 90°F 2004 | 44°F 2024 | 9% | 0% |
| May 7 | 77°F | 42°F | 88°F 2007 | 46°F 2017 | 9% | 0% |
| May 8 | 77°F | 42°F | 91°F 2007 | 49°F 2005 | 9% | 0% |
| May 9 | 77°F | 42°F | 85°F 2025 | 47°F 2003 | 9% | 0% |
| May 10 | 77°F | 42°F | 92°F 2025 | 42°F 2003 | 8% | 0% |
| May 11 | 78°F | 42°F | 85°F 2025 | 45°F 2005 | 8% | 0% |
| May 12 | 78°F | 42°F | 90°F 2013 | 44°F 2010 | 8% | 0% |
| May 13 | 78°F | 42°F | 96°F 2013 | 48°F 2000 | 7% | 0% |
| May 14 | 78°F | 43°F | 96°F 2014 | 45°F 1998 | 7% | 0% |
| May 15 | 78°F | 43°F | 102°F 2014 | 46°F 1998 | 7% | 0% |
| May 16 | 79°F | 43°F | 95°F 2008 | 47°F 2003 | 7% | 0% |
| May 17 | 79°F | 43°F | 88°F 2008 | 48°F 1998 | 7% | 0% |
| May 18 | 79°F | 43°F | 89°F 2008 | 48°F 1998 | 6% | 0% |
| May 19 | 79°F | 43°F | 90°F 2008 | 46°F 1998 | 6% | 0% |
| May 20 | 80°F | 43°F | 87°F 2017 | 51°F 2026 | 6% | 0% |
| May 21 | 80°F | 43°F | 84°F 2025 | 51°F 1998 | 6% | 0% |
| May 22 | 80°F | 43°F | 79°F 2005 | 47°F 2002 | 5% | 0% |
| May 23 | 81°F | 43°F | 80°F 2001 | 47°F 2021 | 5% | 0% |
| May 24 | 81°F | 43°F | 82°F 2006 | 46°F 2010 | 5% | 0% |
| May 25 | 81°F | 43°F | 83°F 2021 | 47°F 2008 | 5% | 0% |
| May 26 | 81°F | 43°F | 82°F 2020 | 50°F 1998 | 4% | 0% |
| May 27 | 82°F | 43°F | 84°F 1997 | 45°F 1998 | 4% | 0% |
| May 28 | 82°F | 43°F | 92°F 1997 | 46°F 2019 | 4% | 0% |
| May 29 | 82°F | 43°F | 88°F 1997 | 49°F 2010 | 4% | 0% |
| May 30 | 83°F | 43°F | 79°F 1997 | 43°F 2011 | 4% | 0% |
| May 31 | 83°F | 43°F | 82°F 2004 | 48°F 2011 | 3% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 5:59 AM, sunset 7:28 PM
- May 31
- sunrise 5:40 AM, sunset 7:49 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00041424 (Campo), public domain. Records: NOAA GHCN-Daily, station USW00003178, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.