Grass Lake Weather in May
Average highs run from 64°F on May 1 to 75°F on May 31, and lows from 43°F to 52°F. Normal precipitation for the month is 3.83 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
- 70°F
- Average low
- 48°F
- Precipitation
- 3.83 in
- Record high
- 95°FMay 28, 2018
- Record low
- 21°FMay 10, 1966
- Chance of a freeze
- 50%
- Daylight
- 14 h 04 min to 15 h 03 min
- Cloud cover
- 65%
- Humidity
- 76%
- Dew point
- 49°F
- Wind
- 10.3 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 | 64°F | 43°F | 84°F 1957 | 23°F 1978 | 37% | |
| May 2 | 65°F | 43°F | 85°F 1959 | 27°F 1966 | 37% | |
| May 3 | 65°F | 43°F | 86°F 1959 | 28°F 1971 | 37% | |
| May 4 | 65°F | 44°F | 87°F 1949 | 26°F 1966 | 37% | |
| May 5 | 66°F | 44°F | 89°F 1952 | 30°F 1987 | 37% | |
| May 6 | 66°F | 45°F | 89°F 1949 | 29°F 1968 | 37% | |
| May 7 | 66°F | 45°F | 84°F 1965 | 25°F 1974 | 37% | |
| May 8 | 67°F | 45°F | 89°F 1979 | 28°F 2020 | 37% | |
| May 9 | 67°F | 46°F | 88°F 1979 | 24°F 2020 | 37% | |
| May 10 | 68°F | 46°F | 86°F 1979 | 21°F 1966 | 37% | |
| May 11 | 68°F | 46°F | 87°F 1979 | 29°F 1949 | 37% | |
| May 12 | 68°F | 46°F | 87°F 1991 | 28°F 2020 | 37% | |
| May 13 | 69°F | 47°F | 88°F 1977 | 27°F 1996 | 37% | |
| May 14 | 69°F | 47°F | 87°F 1962 | 32°F 1973 | 37% | |
| May 15 | 69°F | 47°F | 89°F 1962 | 34°F 1964 | 37% | |
| May 16 | 70°F | 48°F | 91°F 1977 | 31°F 2014 | 37% | 0% |
| May 17 | 70°F | 48°F | 91°F 1962 | 32°F 1973 | 37% | 0% |
| May 18 | 70°F | 48°F | 90°F 1962 | 30°F 1973 | 37% | 0% |
| May 19 | 71°F | 49°F | 91°F 1977 | 28°F 2002 | 37% | 0% |
| May 20 | 71°F | 49°F | 92°F 1977 | 31°F 2002 | 37% | 0% |
| May 21 | 71°F | 49°F | 93°F 1977 | 33°F 1954 | 37% | 0% |
| May 22 | 72°F | 50°F | 88°F 1970 | 33°F 1997 | 37% | 0% |
| May 23 | 72°F | 50°F | 90°F 1977 | 29°F 1963 | 37% | 0% |
| May 24 | 72°F | 50°F | 91°F 1977 | 34°F 1992 | 37% | 0% |
| May 25 | 73°F | 50°F | 92°F 1977 | 31°F 1992 | 37% | 0% |
| May 26 | 73°F | 51°F | 89°F 1978 | 34°F 1958 | 37% | 0% |
| May 27 | 73°F | 51°F | 93°F 2018 | 30°F 1961 | 37% | 0% |
| May 28 | 74°F | 51°F | 95°F 2018 | 31°F 2008 | 37% | 0% |
| May 29 | 74°F | 52°F | 92°F 2018 | 30°F 1966 | 36% | 0% |
| May 30 | 74°F | 52°F | 91°F 1953 | 31°F 1996 | 36% | 0% |
| May 31 | 75°F | 52°F | 94°F 1977 | 32°F 1966 | 36% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- May 1
- sunrise 6:32 AM, sunset 8:36 PM
- May 31
- sunrise 6:03 AM, sunset 9:06 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00201502 (Chelsea), public domain. Records: NOAA GHCN-Daily, station USW00014833, 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.