Cass County Weather in May
Average highs run from 61°F on May 1 to 73°F on May 31, and lows from 37°F to 50°F. Normal precipitation for the month is 3.16 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
- 68°F
- Average low
- 43°F
- Precipitation
- 3.16 in
- Record high
- 98°FMay 21, 1964
- Record low
- 17°FMay 12, 1946
- Chance of a freeze
- 77%
- Days of 90°F or more
- 0.7
- Daylight
- 14 h 27 min to 15 h 36 min
- Cloud cover
- 64%
- Humidity
- 64%
- Dew point
- 43°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 | 61°F | 37°F | 97°F 1959 | 20°F 1958 | 29% | 1% |
| May 2 | 62°F | 37°F | 95°F 1959 | 20°F 1961 | 30% | 1% |
| May 3 | 62°F | 37°F | 92°F 1952 | 20°F 2005 | 30% | 1% |
| May 4 | 63°F | 38°F | 91°F 1952 | 22°F 1967 | 31% | 1% |
| May 5 | 63°F | 38°F | 96°F 2000 | 24°F 1967 | 31% | 1% |
| May 6 | 63°F | 39°F | 86°F 2016 | 21°F 1976 | 31% | 1% |
| May 7 | 64°F | 39°F | 91°F 1992 | 22°F 1976 | 32% | 1% |
| May 8 | 64°F | 40°F | 89°F 1985 | 22°F 1955 | 32% | 1% |
| May 9 | 65°F | 40°F | 90°F 1992 | 20°F 1966 | 33% | 1% |
| May 10 | 65°F | 40°F | 95°F 1987 | 22°F 1946 | 33% | 1% |
| May 11 | 66°F | 41°F | 95°F 2025 | 19°F 1946 | 33% | 0% |
| May 12 | 66°F | 41°F | 95°F 2025 | 17°F 1946 | 33% | 0% |
| May 13 | 67°F | 42°F | 94°F 2025 | 24°F 1988 | 34% | 0% |
| May 14 | 67°F | 42°F | 93°F 2025 | 22°F 1973 | 34% | 0% |
| May 15 | 67°F | 43°F | 92°F 1987 | 26°F 1946 | 34% | 0% |
| May 16 | 68°F | 43°F | 94°F 1987 | 24°F 1983 | 34% | 0% |
| May 17 | 68°F | 44°F | 92°F 2012 | 27°F 2002 | 34% | 0% |
| May 18 | 69°F | 44°F | 96°F 2012 | 25°F 2002 | 34% | 0% |
| May 19 | 69°F | 45°F | 93°F 1992 | 29°F 2002 | 34% | 0% |
| May 20 | 69°F | 45°F | 91°F 1955 | 25°F 1969 | 35% | 0% |
| May 21 | 70°F | 46°F | 98°F 1964 | 25°F 1963 | 35% | 0% |
| May 22 | 70°F | 46°F | 93°F 1980 | 21°F 1963 | 35% | 0% |
| May 23 | 71°F | 46°F | 93°F 2023 | 33°F 1992 | 35% | 0% |
| May 24 | 71°F | 47°F | 92°F 2018 | 26°F 2002 | 35% | 0% |
| May 25 | 71°F | 47°F | 93°F 2018 | 30°F 1983 | 35% | 0% |
| May 26 | 72°F | 48°F | 96°F 2026 | 29°F 1970 | 35% | 0% |
| May 27 | 72°F | 48°F | 95°F 1969 | 32°F 1965 | 35% | 0% |
| May 28 | 72°F | 49°F | 97°F 2006 | 26°F 1947 | 36% | 0% |
| May 29 | 73°F | 49°F | 95°F 2010 | 32°F 1961 | 36% | 0% |
| May 30 | 73°F | 50°F | 93°F 2014 | 29°F 1947 | 36% | 0% |
| May 31 | 73°F | 50°F | 93°F 1986 | 32°F 1892 | 36% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- May 1
- sunrise 6:13 AM, sunset 8:40 PM
- May 31
- sunrise 5:39 AM, sunset 9:15 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00321408 (Casselton Agronomy Farm), public domain. Records: NOAA GHCN-Daily, station USW00014914, 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.