Gerber Weather in May
Average highs run from 77°F on May 1 to 86°F on May 31, and lows from 51°F to 59°F. Normal precipitation for the month is 1.25 in over about 5 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
- 82°F
- Average low
- 55°F
- Precipitation
- 1.25 in
- Record high
- 108°FMay 28, 1984
- Record low
- 33°FMay 10, 1942
- Chance of a freeze
- 0%
- Days of 90°F or more
- 7.6
- Daylight
- 13 h 56 min to 14 h 49 min
- Cloud cover
- 49%
- Humidity
- 63%
- Dew point
- 47°F
- Wind
- 7.8 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 | 77°F | 51°F | 94°F 1945 | 34°F 1942 | 19% | 0% |
| May 2 | 77°F | 51°F | 94°F 1945 | 39°F 1950 | 19% | 0% |
| May 3 | 78°F | 51°F | 98°F 1966 | 36°F 1950 | 19% | 0% |
| May 4 | 78°F | 51°F | 103°F 1990 | 37°F 1964 | 19% | 0% |
| May 5 | 78°F | 52°F | 102°F 1992 | 37°F 1975 | 18% | 0% |
| May 6 | 79°F | 52°F | 97°F 1969 | 39°F 1983 | 18% | 0% |
| May 7 | 79°F | 52°F | 98°F 2001 | 40°F 1961 | 18% | 0% |
| May 8 | 79°F | 52°F | 97°F 2020 | 35°F 1948 | 18% | 0% |
| May 9 | 80°F | 53°F | 98°F 1936 | 37°F 2003 | 18% | 0% |
| May 10 | 80°F | 53°F | 100°F 1936 | 33°F 1942 | 18% | 0% |
| May 11 | 80°F | 53°F | 96°F 1959 | 36°F 2010 | 18% | 0% |
| May 12 | 81°F | 53°F | 102°F 1976 | 35°F 1970 | 18% | 0% |
| May 13 | 81°F | 54°F | 100°F 1972 | 41°F 1942 | 17% | 0% |
| May 14 | 81°F | 54°F | 99°F 1973 | 39°F 1942 | 17% | 0% |
| May 15 | 81°F | 54°F | 104°F 2008 | 38°F 1943 | 17% | 0% |
| May 16 | 82°F | 55°F | 104°F 2008 | 40°F 1944 | 17% | 0% |
| May 17 | 82°F | 55°F | 104°F 2008 | 42°F 1974 | 17% | 0% |
| May 18 | 82°F | 55°F | 101°F 2008 | 40°F 1974 | 17% | 0% |
| May 19 | 83°F | 55°F | 100°F 1940 | 42°F 1991 | 16% | 0% |
| May 20 | 83°F | 56°F | 104°F 1947 | 42°F 1992 | 16% | 0% |
| May 21 | 83°F | 56°F | 104°F 1947 | 43°F 1960 | 16% | 0% |
| May 22 | 83°F | 56°F | 103°F 1941 | 37°F 2010 | 16% | 0% |
| May 23 | 84°F | 56°F | 101°F 2000 | 44°F 2010 | 15% | 0% |
| May 24 | 84°F | 57°F | 105°F 1943 | 40°F 1989 | 15% | 0% |
| May 25 | 84°F | 57°F | 105°F 1982 | 44°F 1945 | 15% | 0% |
| May 26 | 85°F | 57°F | 102°F 1951 | 44°F 1953 | 15% | 0% |
| May 27 | 85°F | 58°F | 102°F 1983 | 42°F 1953 | 14% | 0% |
| May 28 | 85°F | 58°F | 108°F 1984 | 45°F 2006 | 14% | 0% |
| May 29 | 85°F | 58°F | 102°F 1950 | 45°F 2011 | 14% | 0% |
| May 30 | 86°F | 58°F | 108°F 1950 | 47°F 1988 | 13% | 0% |
| May 31 | 86°F | 59°F | 108°F 2021 | 44°F 1990 | 13% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- May 1
- sunrise 6:08 AM, sunset 8:04 PM
- May 31
- sunrise 5:42 AM, sunset 8:31 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00024216 (Red Bluff Muni AP), public domain. Records: NOAA GHCN-Daily, station USW00024216, 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.