Custer Weather in May
Average highs run from 55°F on May 1 to 67°F on May 31, and lows from 35°F to 46°F. Normal precipitation for the month is 3.53 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
- 61°F
- Average low
- 41°F
- Precipitation
- 3.53 in
- Snowfall
- 2.1 in
- Record high
- 88°FMay 29, 2003
- Record low
- 12°FMay 2, 2005
- Chance of a freeze
- 96%
- Daylight
- 14 h 11 min to 15 h 13 min
- Cloud cover
- 64%
- Humidity
- 63%
- Dew point
- 36°F
- Wind
- 6.9 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 | 35°F | 73°F 2021 | 14°F 2005 | 38% | 8% |
| May 2 | 55°F | 35°F | 72°F 2015 | 12°F 2005 | 39% | 8% |
| May 3 | 56°F | 36°F | 73°F 2023 | 16°F 2005 | 39% | 8% |
| May 4 | 56°F | 36°F | 81°F 2000 | 23°F 2024 | 40% | 7% |
| May 5 | 57°F | 36°F | 84°F 2004 | 23°F 2026 | 40% | 7% |
| May 6 | 57°F | 37°F | 79°F 2016 | 17°F 2026 | 41% | 7% |
| May 7 | 57°F | 37°F | 79°F 2017 | 23°F 2010 | 41% | 6% |
| May 8 | 58°F | 38°F | 74°F 2004 | 17°F 2010 | 42% | 6% |
| May 9 | 58°F | 38°F | 73°F 2004 | 21°F 2021 | 42% | 5% |
| May 10 | 59°F | 38°F | 77°F 2012 | 24°F 2008 | 43% | 5% |
| May 11 | 59°F | 39°F | 83°F 2025 | 24°F 2008 | 43% | 5% |
| May 12 | 60°F | 39°F | 83°F 2025 | 24°F 2012 | 43% | 5% |
| May 13 | 60°F | 40°F | 83°F 2001 | 24°F 2000 | 44% | 4% |
| May 14 | 60°F | 40°F | 78°F 2001 | 20°F 2016 | 44% | 4% |
| May 15 | 61°F | 40°F | 76°F 2019 | 25°F 2016 | 44% | 4% |
| May 16 | 61°F | 41°F | 82°F 2012 | 27°F 2009 | 45% | 3% |
| May 17 | 62°F | 41°F | 77°F 2024 | 27°F 1999 | 45% | 3% |
| May 18 | 62°F | 42°F | 81°F 2007 | 28°F 2015 | 45% | 3% |
| May 19 | 63°F | 42°F | 86°F 2009 | 24°F 2026 | 45% | 3% |
| May 20 | 63°F | 42°F | 79°F 2005 | 19°F 2003 | 45% | 2% |
| May 21 | 63°F | 43°F | 76°F 2007 | 24°F 2015 | 46% | 2% |
| May 22 | 64°F | 43°F | 82°F 2012 | 22°F 2022 | 46% | 2% |
| May 23 | 64°F | 43°F | 76°F 2023 | 25°F 2002 | 46% | 2% |
| May 24 | 65°F | 44°F | 76°F 2013 | 23°F 2002 | 46% | 2% |
| May 25 | 65°F | 44°F | 77°F 2018 | 29°F 2001 | 46% | 2% |
| May 26 | 65°F | 44°F | 83°F 2018 | 27°F 2007 | 46% | 1% |
| May 27 | 66°F | 45°F | 81°F 2022 | 31°F 2008 | 46% | 1% |
| May 28 | 66°F | 45°F | 84°F 2010 | 28°F 2011 | 46% | 1% |
| May 29 | 66°F | 45°F | 88°F 2003 | 33°F 2005 | 46% | 1% |
| May 30 | 67°F | 45°F | 81°F 2002 | 31°F 2015 | 46% | 1% |
| May 31 | 67°F | 46°F | 81°F 2020 | 34°F 2022 | 46% | 1% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- May 1
- sunrise 5:46 AM, sunset 7:57 PM
- May 31
- sunrise 5:16 AM, sunset 8:29 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00392087 (Custer), public domain. Records: NOAA GHCN-Daily, station USW00094032, 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.