Alturas Weather in May
Average highs run from 87°F on May 1 to 90°F on May 31, and lows from 64°F to 69°F. Normal precipitation for the month is 2.95 in over about 7 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
- 89°F
- Average low
- 66°F
- Precipitation
- 2.95 in
- Record high
- 102°FMay 31, 1945
- Record low
- 44°FMay 2, 2006
- Chance of a freeze
- 0%
- Days of 90°F or more
- 15.5
- Daylight
- 13 h 14 min to 13 h 47 min
- Cloud cover
- 47%
- Humidity
- 67%
- Dew point
- 65°F
- Wind
- 8.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| May 1 | 87°F | 64°F | 98°F 2017 | 48°F 1945 | 17% |
| May 2 | 87°F | 64°F | 97°F 1990 | 44°F 2006 | 17% |
| May 3 | 87°F | 64°F | 96°F 1975 | 49°F 1940 | 17% |
| May 4 | 87°F | 64°F | 96°F 1975 | 46°F 1971 | 17% |
| May 5 | 87°F | 64°F | 98°F 1984 | 45°F 1971 | 17% |
| May 6 | 88°F | 65°F | 99°F 1984 | 48°F 1945 | 18% |
| May 7 | 88°F | 65°F | 96°F 1952 | 45°F 1945 | 18% |
| May 8 | 88°F | 65°F | 99°F 2026 | 44°F 1992 | 18% |
| May 9 | 88°F | 65°F | 100°F 2026 | 49°F 1958 | 19% |
| May 10 | 88°F | 65°F | 100°F 2026 | 52°F 1984 | 19% |
| May 11 | 88°F | 66°F | 100°F 2026 | 52°F 1969 | 20% |
| May 12 | 88°F | 66°F | 99°F 1967 | 51°F 1989 | 20% |
| May 13 | 89°F | 66°F | 99°F 1967 | 49°F 1952 | 21% |
| May 14 | 89°F | 66°F | 98°F 1967 | 46°F 1960 | 21% |
| May 15 | 89°F | 66°F | 98°F 1967 | 50°F 1989 | 22% |
| May 16 | 89°F | 66°F | 98°F 2026 | 50°F 1989 | 23% |
| May 17 | 89°F | 67°F | 99°F 1981 | 49°F 1973 | 23% |
| May 18 | 89°F | 67°F | 98°F 2026 | 53°F 1940 | 24% |
| May 19 | 89°F | 67°F | 98°F 1981 | 54°F 2014 | 24% |
| May 20 | 89°F | 67°F | 99°F 2017 | 55°F 1979 | 25% |
| May 21 | 89°F | 67°F | 98°F 1938 | 54°F 1994 | 26% |
| May 22 | 89°F | 68°F | 99°F 2017 | 51°F 1994 | 26% |
| May 23 | 90°F | 68°F | 100°F 2026 | 55°F 1994 | 27% |
| May 24 | 90°F | 68°F | 98°F 2025 | 57°F 1942 | 27% |
| May 25 | 90°F | 68°F | 99°F 2025 | 59°F 1967 | 28% |
| May 26 | 90°F | 68°F | 99°F 1953 | 52°F 1979 | 29% |
| May 27 | 90°F | 68°F | 101°F 2024 | 53°F 1979 | 30% |
| May 28 | 90°F | 69°F | 99°F 2024 | 59°F 1942 | 30% |
| May 29 | 90°F | 69°F | 99°F 1973 | 56°F 1935 | 31% |
| May 30 | 90°F | 69°F | 98°F 1945 | 56°F 1971 | 32% |
| May 31 | 90°F | 69°F | 102°F 1945 | 54°F 1971 | 33% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:47 AM, sunset 8:01 PM
- May 31
- sunrise 6:31 AM, sunset 8:18 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00080478 (Bartow 1SE), public domain. Records: NOAA GHCN-Daily, station USC00085973, 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.