Rough and Ready Weather in May
Average highs run from 67°F on May 1 to 75°F on May 31, and lows from 43°F to 50°F. Normal precipitation for the month is 2.48 in over about 6 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
- 71°F
- Average low
- 47°F
- Precipitation
- 2.48 in
- Record high
- 101°FMay 30, 1910
- Record low
- 21°FMay 1, 1936
- Chance of a freeze
- 9%
- Days of 90°F or more
- 0.5
- Daylight
- 13 h 52 min to 14 h 45 min
- Cloud cover
- 49%
- Humidity
- 61%
- Dew point
- 48°F
- Wind
- 6.3 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 | 67°F | 43°F | 89°F 1945 | 21°F 1936 | 23% | 0% |
| May 2 | 67°F | 44°F | 87°F 1903 | 25°F 1920 | 23% | 0% |
| May 3 | 67°F | 44°F | 85°F 1966 | 25°F 1920 | 23% | 0% |
| May 4 | 67°F | 44°F | 87°F 1966 | 27°F 1920 | 22% | 0% |
| May 5 | 68°F | 44°F | 89°F 1945 | 22°F 2020 | 22% | 0% |
| May 6 | 68°F | 45°F | 86°F 1987 | 25°F 1936 | 22% | 0% |
| May 7 | 68°F | 45°F | 88°F 1910 | 26°F 1950 | 21% | 0% |
| May 8 | 69°F | 45°F | 89°F 1987 | 21°F 1930 | 21% | 0% |
| May 9 | 69°F | 45°F | 95°F 1936 | 29°F 1922 | 21% | 0% |
| May 10 | 69°F | 46°F | 92°F 1936 | 25°F 1918 | 21% | 0% |
| May 11 | 69°F | 46°F | 89°F 1934 | 29°F 1922 | 20% | 0% |
| May 12 | 70°F | 46°F | 94°F 1939 | 29°F 1943 | 20% | 0% |
| May 13 | 70°F | 46°F | 94°F 1939 | 25°F 1936 | 20% | 0% |
| May 14 | 70°F | 47°F | 90°F 1976 | 29°F 1918 | 20% | 0% |
| May 15 | 71°F | 47°F | 97°F 1927 | 30°F 1918 | 19% | 0% |
| May 16 | 71°F | 47°F | 92°F 2008 | 25°F 1917 | 19% | 0% |
| May 17 | 71°F | 47°F | 91°F 2008 | 29°F 1943 | 19% | 0% |
| May 18 | 71°F | 47°F | 93°F 2009 | 28°F 1974 | 19% | 0% |
| May 19 | 72°F | 48°F | 92°F 2008 | 27°F 1927 | 18% | 0% |
| May 20 | 72°F | 48°F | 93°F 1947 | 25°F 1927 | 18% | 0% |
| May 21 | 72°F | 48°F | 92°F 1947 | 25°F 1936 | 18% | 0% |
| May 22 | 73°F | 48°F | 96°F 1947 | 29°F 1960 | 18% | 0% |
| May 23 | 73°F | 48°F | 94°F 1936 | 30°F 2010 | 17% | 0% |
| May 24 | 73°F | 49°F | 93°F 1982 | 30°F 1937 | 17% | 0% |
| May 25 | 73°F | 49°F | 97°F 1982 | 28°F 1911 | 17% | 0% |
| May 26 | 74°F | 49°F | 91°F 1951 | 28°F 1923 | 16% | 0% |
| May 27 | 74°F | 49°F | 98°F 1951 | 29°F 1929 | 16% | 0% |
| May 28 | 74°F | 49°F | 99°F 1910 | 29°F 1918 | 16% | 0% |
| May 29 | 75°F | 49°F | 97°F 1984 | 27°F 1927 | 15% | 0% |
| May 30 | 75°F | 50°F | 101°F 1910 | 30°F 1937 | 15% | 0% |
| May 31 | 75°F | 50°F | 100°F 1910 | 29°F 1923 | 15% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 6:06 AM, sunset 7:58 PM
- May 31
- sunrise 5:40 AM, sunset 8:25 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00043573 (Grass Valley #2), public domain. Records: NOAA GHCN-Daily, station USC00046136, 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.