Julian Weather in May
Average highs run from 65°F on May 1 to 74°F on May 31, and lows from 45°F to 50°F. Normal precipitation for the month is 0.82 in over about 3 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
- 69°F
- Average low
- 47°F
- Precipitation
- 0.82 in
- Record high
- 101°FMay 10, 2025
- Record low
- 32°FMay 11, 2022
- Chance of a freeze
- 10%
- Daylight
- 13 h 30 min to 14 h 11 min
- Cloud cover
- 29%
- Humidity
- 44%
- Dew point
- 42°F
- Wind
- 12.1 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 | 65°F | 45°F | 92°F 2015 | 33°F 2011 | 11% | |
| May 2 | 65°F | 45°F | 98°F 2004 | 35°F 2011 | 11% | |
| May 3 | 65°F | 45°F | 100°F 2004 | 37°F 2002 | 11% | |
| May 4 | 65°F | 45°F | 94°F 2004 | 38°F 2001 | 11% | |
| May 5 | 65°F | 45°F | 94°F 2018 | 35°F 1999 | 11% | |
| May 6 | 66°F | 45°F | 92°F 2020 | 36°F 2024 | 11% | |
| May 7 | 66°F | 45°F | 92°F 2020 | 38°F 2023 | 11% | |
| May 8 | 66°F | 46°F | 92°F 2007 | 42°F 2005 | 10% | |
| May 9 | 66°F | 46°F | 95°F 2025 | 38°F 2003 | 10% | |
| May 10 | 67°F | 46°F | 101°F 2025 | 33°F 2003 | 10% | |
| May 11 | 67°F | 46°F | 94°F 2025 | 32°F 2022 | 10% | |
| May 12 | 67°F | 46°F | 98°F 2013 | 35°F 2010 | 10% | |
| May 13 | 67°F | 46°F | 100°F 2013 | 41°F 2000 | 9% | |
| May 14 | 68°F | 47°F | 96°F 2022 | 40°F 2000 | 9% | |
| May 15 | 68°F | 47°F | 100°F 2014 | 40°F 1998 | 9% | |
| May 16 | 68°F | 47°F | 97°F 2008 | 35°F 2011 | 9% | |
| May 17 | 69°F | 47°F | 97°F 2008 | 40°F 2000 | 9% | |
| May 18 | 69°F | 47°F | 97°F 2008 | 41°F 2000 | 8% | 0% |
| May 19 | 69°F | 48°F | 95°F 2008 | 39°F 2026 | 8% | 0% |
| May 20 | 70°F | 48°F | 94°F 2017 | 40°F 2020 | 8% | 0% |
| May 21 | 70°F | 48°F | 92°F 2005 | 40°F 2020 | 8% | 0% |
| May 22 | 70°F | 48°F | 91°F 2005 | 36°F 2002 | 7% | 0% |
| May 23 | 71°F | 48°F | 94°F 2001 | 34°F 2021 | 7% | 0% |
| May 24 | 71°F | 49°F | 91°F 2021 | 37°F 2010 | 7% | 0% |
| May 25 | 71°F | 49°F | 87°F 2021 | 40°F 2010 | 7% | 0% |
| May 26 | 72°F | 49°F | 89°F 2020 | 42°F 2010 | 6% | 0% |
| May 27 | 72°F | 49°F | 92°F 2000 | 40°F 2012 | 6% | 0% |
| May 28 | 72°F | 50°F | 96°F 2000 | 41°F 2012 | 6% | 0% |
| May 29 | 73°F | 50°F | 89°F 2002 | 41°F 2006 | 5% | 0% |
| May 30 | 73°F | 50°F | 100°F 2025 | 35°F 2011 | 5% | 0% |
| May 31 | 74°F | 50°F | 92°F 2004 | 40°F 2011 | 5% | 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 7:29 PM
- May 31
- sunrise 5:39 AM, sunset 7:50 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00044412 (Julian Cdf), public domain. Records: NOAA GHCN-Daily, station USW00053120, 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.