Colby Weather in May
Average highs run from 68°F on May 1 to 81°F on May 31, and lows from 40°F to 52°F. Normal precipitation for the month is 2.92 in over about 10 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
- 74°F
- Average low
- 46°F
- Precipitation
- 2.92 in
- Snowfall
- 0.7 in
- Record high
- 103°FMay 30, 2003
- Record low
- 20°FMay 2, 1967
- Chance of a freeze
- 59%
- Days of 90°F or more
- 3.0
- Daylight
- 13 h 53 min to 14 h 45 min
- Cloud cover
- 59%
- Humidity
- 56%
- Dew point
- 44°F
- Wind
- 11.6 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 | 68°F | 40°F | 98°F 1992 | 23°F 1967 | 29% | 2% |
| May 2 | 69°F | 40°F | 96°F 1959 | 20°F 1967 | 30% | 2% |
| May 3 | 69°F | 40°F | 96°F 1965 | 25°F 2013 | 30% | 1% |
| May 4 | 69°F | 41°F | 89°F 1963 | 25°F 2013 | 30% | 1% |
| May 5 | 70°F | 41°F | 95°F 2012 | 29°F 1967 | 30% | 1% |
| May 6 | 70°F | 42°F | 96°F 2004 | 28°F 1989 | 31% | 1% |
| May 7 | 70°F | 42°F | 96°F 2004 | 28°F 1976 | 31% | 1% |
| May 8 | 71°F | 42°F | 93°F 1962 | 27°F 1975 | 31% | 1% |
| May 9 | 71°F | 43°F | 97°F 2011 | 28°F 1997 | 31% | 1% |
| May 10 | 72°F | 43°F | 94°F 2011 | 27°F 1981 | 32% | 1% |
| May 11 | 72°F | 44°F | 92°F 1962 | 26°F 1979 | 32% | 1% |
| May 12 | 72°F | 44°F | 99°F 1962 | 30°F 1997 | 32% | 1% |
| May 13 | 73°F | 45°F | 99°F 1962 | 26°F 1966 | 32% | 1% |
| May 14 | 73°F | 45°F | 93°F 2013 | 28°F 2004 | 32% | 1% |
| May 15 | 74°F | 46°F | 98°F 2013 | 27°F 1983 | 32% | 1% |
| May 16 | 74°F | 46°F | 93°F 2017 | 30°F 2011 | 32% | 0% |
| May 17 | 75°F | 46°F | 97°F 1996 | 29°F 1976 | 32% | 0% |
| May 18 | 75°F | 47°F | 94°F 1988 | 35°F 1986 | 33% | 0% |
| May 19 | 76°F | 47°F | 102°F 1996 | 33°F 1983 | 33% | 0% |
| May 20 | 76°F | 48°F | 95°F 2006 | 34°F 1963 | 33% | 0% |
| May 21 | 76°F | 48°F | 98°F 2005 | 35°F 2017 | 33% | 0% |
| May 22 | 77°F | 49°F | 97°F 2005 | 34°F 2019 | 33% | 0% |
| May 23 | 77°F | 49°F | 96°F 1964 | 38°F 1957 | 33% | 0% |
| May 24 | 78°F | 49°F | 96°F 1967 | 32°F 2002 | 33% | 0% |
| May 25 | 78°F | 50°F | 98°F 1967 | 32°F 2001 | 33% | 0% |
| May 26 | 79°F | 50°F | 98°F 1964 | 24°F 1992 | 33% | 0% |
| May 27 | 79°F | 51°F | 99°F 2006 | 35°F 1992 | 33% | 0% |
| May 28 | 80°F | 51°F | 101°F 2006 | 36°F 1992 | 33% | 0% |
| May 29 | 80°F | 52°F | 99°F 2000 | 33°F 1992 | 33% | 0% |
| May 30 | 81°F | 52°F | 103°F 2003 | 40°F 1973 | 33% | 0% |
| May 31 | 81°F | 52°F | 98°F 2011 | 36°F 1964 | 33% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- May 1
- sunrise 6:45 AM, sunset 8:38 PM
- May 31
- sunrise 6:20 AM, sunset 9:05 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00141699 (Colby 1SW), public domain. Records: NOAA GHCN-Daily, station USC00141699, 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.