Afton Weather in May
Average highs run from 55°F on May 1 to 66°F on May 31, and lows from 29°F to 36°F. Normal precipitation for the month is 2.36 in over about 11 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
- 60°F
- Average low
- 33°F
- Precipitation
- 2.36 in
- Snowfall
- 0.8 in
- Record high
- 87°FMay 30, 2003
- Record low
- 9°FMay 2, 1988
- Chance of a freeze
- 100%
- Daylight
- 14 h 06 min to 15 h 06 min
- Cloud cover
- 63%
- Humidity
- 64%
- Dew point
- 32°F
- Wind
- 5.4 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 | 55°F | 29°F | 76°F 1981 | 14°F 1972 | 36% | 7% |
| May 2 | 55°F | 30°F | 78°F 1971 | 9°F 1988 | 36% | 6% |
| May 3 | 56°F | 30°F | 75°F 1966 | 16°F 2013 | 36% | 6% |
| May 4 | 56°F | 30°F | 78°F 1966 | 18°F 1964 | 36% | 6% |
| May 5 | 57°F | 30°F | 82°F 1966 | 14°F 1982 | 36% | 6% |
| May 6 | 57°F | 31°F | 78°F 1966 | 16°F 1982 | 36% | 5% |
| May 7 | 57°F | 31°F | 76°F 1987 | 19°F 1965 | 36% | 5% |
| May 8 | 58°F | 31°F | 77°F 1987 | 19°F 1979 | 36% | 5% |
| May 9 | 58°F | 32°F | 74°F 1962 | 19°F 2002 | 36% | 4% |
| May 10 | 58°F | 32°F | 77°F 1960 | 19°F 1983 | 36% | 4% |
| May 11 | 59°F | 32°F | 80°F 1960 | 15°F 1999 | 36% | 4% |
| May 12 | 59°F | 32°F | 79°F 2026 | 18°F 1999 | 36% | 4% |
| May 13 | 59°F | 33°F | 80°F 2026 | 20°F 1983 | 36% | 4% |
| May 14 | 60°F | 33°F | 82°F 2001 | 21°F 1960 | 36% | 3% |
| May 15 | 60°F | 33°F | 79°F 1987 | 22°F 1974 | 36% | 3% |
| May 16 | 61°F | 33°F | 80°F 1988 | 23°F 1974 | 36% | 3% |
| May 17 | 61°F | 34°F | 78°F 1988 | 22°F 1986 | 35% | 3% |
| May 18 | 61°F | 34°F | 82°F 2009 | 22°F 1965 | 35% | 3% |
| May 19 | 62°F | 34°F | 82°F 1964 | 20°F 1989 | 35% | 2% |
| May 20 | 62°F | 34°F | 81°F 1958 | 24°F 1988 | 35% | 2% |
| May 21 | 62°F | 34°F | 79°F 1958 | 23°F 1989 | 35% | 2% |
| May 22 | 63°F | 35°F | 78°F 1967 | 24°F 1960 | 35% | 2% |
| May 23 | 63°F | 35°F | 81°F 1967 | 18°F 1966 | 35% | 2% |
| May 24 | 63°F | 35°F | 85°F 1969 | 25°F 1966 | 35% | 2% |
| May 25 | 64°F | 35°F | 82°F 1969 | 18°F 1975 | 34% | 2% |
| May 26 | 64°F | 35°F | 80°F 1958 | 18°F 1975 | 34% | 1% |
| May 27 | 64°F | 36°F | 81°F 2003 | 21°F 1975 | 34% | 1% |
| May 28 | 65°F | 36°F | 82°F 2003 | 22°F 1991 | 34% | 1% |
| May 29 | 65°F | 36°F | 85°F 1963 | 20°F 1982 | 33% | 1% |
| May 30 | 65°F | 36°F | 87°F 2003 | 19°F 1982 | 33% | 1% |
| May 31 | 66°F | 36°F | 83°F 2002 | 21°F 1982 | 33% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 6:18 AM, sunset 8:24 PM
- May 31
- sunrise 5:49 AM, sunset 8:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00480027 (Afton), public domain. Records: NOAA GHCN-Daily, station USC00480027, 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.