Delta County Weather in May
Average highs run from 58°F on May 1 to 68°F on May 31, and lows from 35°F to 45°F. Normal precipitation for the month is 3.49 in.
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
- 63°F
- Average low
- 41°F
- Precipitation
- 3.49 in
- Record high
- 91°FMay 20, 1998
- Record low
- 20°FMay 2, 1882
- Chance of a freeze
- 93%
- Daylight
- 14 h 20 min to 15 h 27 min
- Cloud cover
- 76%
- Humidity
- 77%
- Dew point
- 42°F
- Wind
- 6.0 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 | 58°F | 35°F | 80°F 1930 | 22°F 1890 | ||
| May 2 | 58°F | 36°F | 76°F 1895 | 20°F 1882 | ||
| May 3 | 59°F | 36°F | 76°F 1937 | 23°F 1881 | ||
| May 4 | 59°F | 37°F | 78°F 1955 | 22°F 1907 | ||
| May 5 | 59°F | 37°F | 81°F 1952 | 23°F 1891 | ||
| May 6 | 60°F | 37°F | 88°F 1934 | 25°F 1954 | ||
| May 7 | 60°F | 38°F | 75°F 1912 | 24°F 1890 | ||
| May 8 | 61°F | 38°F | 81°F 1951 | 26°F 1966 | ||
| May 9 | 61°F | 39°F | 81°F 1987 | 25°F 1947 | ||
| May 10 | 61°F | 39°F | 77°F 1887 | 25°F 1966 | ||
| May 11 | 62°F | 39°F | 82°F 1956 | 25°F 1907 | ||
| May 12 | 62°F | 40°F | 79°F 1906 | 28°F 1878 | ||
| May 13 | 63°F | 40°F | 83°F 1977 | 23°F 1890 | ||
| May 14 | 63°F | 40°F | 84°F 1900 | 26°F 1895 | 0% | |
| May 15 | 63°F | 40°F | 87°F 1931 | 28°F 1888 | 0% | |
| May 16 | 64°F | 41°F | 81°F 1917 | 27°F 1895 | 0% | |
| May 17 | 64°F | 41°F | 84°F 1936 | 28°F 1997 | 0% | |
| May 18 | 64°F | 41°F | 80°F 1955 | 28°F 1915 | 0% | |
| May 19 | 65°F | 42°F | 89°F 1996 | 26°F 2002 | 0% | |
| May 20 | 65°F | 42°F | 91°F 1998 | 27°F 1906 | 0% | |
| May 21 | 65°F | 42°F | 78°F 1904 | 29°F 2002 | 0% | |
| May 22 | 66°F | 42°F | 84°F 1956 | 28°F 1963 | 0% | |
| May 23 | 66°F | 43°F | 78°F 1916 | 28°F 2006 | 0% | |
| May 24 | 66°F | 43°F | 85°F 1961 | 31°F 1925 | 0% | |
| May 25 | 66°F | 43°F | 77°F 1972 | 31°F 1897 | 0% | |
| May 26 | 67°F | 44°F | 91°F 1914 | 28°F 1895 | 0% | |
| May 27 | 67°F | 44°F | 83°F 1914 | 27°F 1895 | 0% | |
| May 28 | 67°F | 44°F | 85°F 1986 | 29°F 1894 | 0% | |
| May 29 | 68°F | 44°F | 91°F 1998 | 29°F 2008 | 0% | |
| May 30 | 68°F | 45°F | 91°F 1986 | 30°F 1996 | 0% | |
| May 31 | 68°F | 45°F | 91°F 1925 | 33°F 1996 | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:35 AM, sunset 8:55 PM
- May 31
- sunrise 6:02 AM, sunset 9:29 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00206840 (Rapid Rvr 4SSE), public domain. Records: NOAA GHCN-Daily, station USW00014824, 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.