Grant County Weather in May
Average highs run from 61°F on May 1 to 73°F on May 31, and lows from 38°F to 50°F. Normal precipitation for the month is 2.96 in over about 14 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
- 67°F
- Average low
- 44°F
- Precipitation
- 2.96 in
- Snowfall
- 0.5 in
- Record high
- 100°FMay 13, 1941
- Record low
- 19°FMay 1, 1925
- Chance of a freeze
- 68%
- Daylight
- 14 h 03 min to 15 h 00 min
- Cloud cover
- 62%
- Humidity
- 58%
- Dew point
- 41°F
- Wind
- 12.3 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 | 61°F | 38°F | 97°F 1928 | 19°F 1925 | 40% | 4% |
| May 2 | 62°F | 39°F | 91°F 2021 | 21°F 2005 | 41% | 3% |
| May 3 | 62°F | 39°F | 91°F 1949 | 21°F 1954 | 41% | 3% |
| May 4 | 62°F | 39°F | 92°F 1952 | 25°F 2008 | 41% | 3% |
| May 5 | 63°F | 40°F | 90°F 1926 | 26°F 1944 | 42% | 3% |
| May 6 | 63°F | 40°F | 98°F 2004 | 28°F 1989 | 42% | 3% |
| May 7 | 64°F | 41°F | 89°F 1966 | 27°F 1972 | 42% | 2% |
| May 8 | 64°F | 41°F | 93°F 1966 | 30°F 1938 | 43% | 2% |
| May 9 | 64°F | 41°F | 95°F 1928 | 26°F 2002 | 43% | 2% |
| May 10 | 65°F | 42°F | 94°F 1962 | 26°F 2002 | 43% | 2% |
| May 11 | 65°F | 42°F | 94°F 1962 | 27°F 1946 | 44% | 2% |
| May 12 | 66°F | 43°F | 98°F 1962 | 28°F 1943 | 44% | 2% |
| May 13 | 66°F | 43°F | 100°F 1941 | 25°F 1953 | 44% | 2% |
| May 14 | 66°F | 44°F | 95°F 1894 | 28°F 1926 | 45% | 1% |
| May 15 | 67°F | 44°F | 97°F 2013 | 30°F 1940 | 45% | 1% |
| May 16 | 67°F | 44°F | 93°F 1996 | 30°F 1943 | 46% | 1% |
| May 17 | 68°F | 45°F | 97°F 1927 | 30°F 1976 | 46% | 1% |
| May 18 | 68°F | 45°F | 95°F 1996 | 30°F 1930 | 46% | 1% |
| May 19 | 68°F | 46°F | 96°F 1970 | 32°F 1930 | 47% | 1% |
| May 20 | 69°F | 46°F | 95°F 1974 | 22°F 1931 | 47% | 1% |
| May 21 | 69°F | 47°F | 98°F 2005 | 27°F 1931 | 47% | 1% |
| May 22 | 70°F | 47°F | 94°F 1927 | 27°F 1931 | 48% | 1% |
| May 23 | 70°F | 47°F | 98°F 1926 | 27°F 1893 | 48% | 1% |
| May 24 | 70°F | 48°F | 95°F 1926 | 28°F 1966 | 48% | 1% |
| May 25 | 71°F | 48°F | 95°F 1967 | 29°F 1893 | 48% | 0% |
| May 26 | 71°F | 48°F | 93°F 1967 | 31°F 1992 | 48% | 0% |
| May 27 | 72°F | 49°F | 97°F 2012 | 30°F 1950 | 48% | 0% |
| May 28 | 72°F | 49°F | 100°F 2006 | 20°F 1893 | 48% | 0% |
| May 29 | 72°F | 50°F | 98°F 2000 | 25°F 1947 | 48% | 0% |
| May 30 | 73°F | 50°F | 100°F 2003 | 32°F 1893 | 48% | 0% |
| May 31 | 73°F | 50°F | 98°F 1994 | 34°F 1964 | 48% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 5:43 AM, sunset 7:46 PM
- May 31
- sunrise 5:15 AM, sunset 8:15 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00094079 (Whitman 5 Ene), public domain. Records: NOAA GHCN-Daily, station USC00256200, 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.