Teton County Weather in May
Average highs run from 51°F on May 1 to 62°F on May 31, and lows from 26°F to 34°F. Normal precipitation for the month is 2.36 in over about 12 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
- 56°F
- Average low
- 31°F
- Precipitation
- 2.36 in
- Snowfall
- 2.9 in
- Record high
- 88°FMay 29, 2003
- Record low
- 7°FMay 2, 1988
- Chance of a freeze
- 100%
- Daylight
- 14 h 12 min to 15 h 14 min
- Cloud cover
- 73%
- Humidity
- 74%
- Dew point
- 31°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 | 51°F | 26°F | 76°F 2021 | 10°F 1967 | 38% | 13% |
| May 2 | 51°F | 27°F | 77°F 2007 | 7°F 1988 | 38% | 13% |
| May 3 | 52°F | 27°F | 73°F 1966 | 14°F 1988 | 38% | 12% |
| May 4 | 52°F | 27°F | 76°F 1966 | 18°F 1984 | 38% | 12% |
| May 5 | 52°F | 27°F | 77°F 1966 | 12°F 1982 | 38% | 11% |
| May 6 | 53°F | 28°F | 77°F 1966 | 16°F 1984 | 38% | 11% |
| May 7 | 53°F | 28°F | 78°F 1992 | 14°F 2010 | 38% | 10% |
| May 8 | 54°F | 28°F | 75°F 1987 | 16°F 1979 | 38% | 10% |
| May 9 | 54°F | 29°F | 75°F 1987 | 14°F 2002 | 38% | 9% |
| May 10 | 54°F | 29°F | 75°F 1960 | 14°F 2002 | 38% | 9% |
| May 11 | 55°F | 29°F | 80°F 1960 | 16°F 1981 | 38% | 8% |
| May 12 | 55°F | 30°F | 79°F 1960 | 9°F 1981 | 38% | 8% |
| May 13 | 55°F | 30°F | 80°F 2001 | 14°F 1985 | 39% | 7% |
| May 14 | 56°F | 30°F | 78°F 1996 | 17°F 1970 | 39% | 7% |
| May 15 | 56°F | 30°F | 77°F 2012 | 21°F 1970 | 39% | 7% |
| May 16 | 57°F | 31°F | 80°F 2012 | 23°F 1990 | 39% | 6% |
| May 17 | 57°F | 31°F | 80°F 2006 | 18°F 1974 | 39% | 6% |
| May 18 | 57°F | 31°F | 79°F 2009 | 22°F 1965 | 39% | 6% |
| May 19 | 58°F | 32°F | 81°F 2007 | 13°F 2003 | 40% | 5% |
| May 20 | 58°F | 32°F | 82°F 2002 | 22°F 2024 | 40% | 5% |
| May 21 | 58°F | 32°F | 79°F 2002 | 18°F 2003 | 40% | 5% |
| May 22 | 59°F | 32°F | 80°F 2008 | 20°F 1973 | 40% | 5% |
| May 23 | 59°F | 33°F | 80°F 1967 | 15°F 1966 | 40% | 4% |
| May 24 | 59°F | 33°F | 79°F 1967 | 19°F 1986 | 40% | 4% |
| May 25 | 60°F | 33°F | 82°F 2003 | 20°F 1975 | 40% | 4% |
| May 26 | 60°F | 33°F | 82°F 2003 | 18°F 1975 | 40% | 3% |
| May 27 | 60°F | 33°F | 81°F 1966 | 22°F 1965 | 40% | 3% |
| May 28 | 61°F | 34°F | 81°F 2003 | 22°F 1973 | 40% | 3% |
| May 29 | 61°F | 34°F | 88°F 2003 | 21°F 1991 | 40% | 3% |
| May 30 | 61°F | 34°F | 83°F 2003 | 20°F 2004 | 40% | 3% |
| May 31 | 62°F | 34°F | 82°F 2002 | 24°F 1978 | 39% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 6:14 AM, sunset 8:26 PM
- May 31
- sunrise 5:43 AM, sunset 8:57 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00486440 (Moran 5WNW), public domain. Records: NOAA GHCN-Daily, station USC00486428, 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.