May weather in Decatur, MI
The average temperature in Decatur in May is 57.9°F (47.1°F–68.6°F). Average precipitation: 4.19 inches.
May is a spring month in Decatur, and is warmer than the annual average of 48.1°F. Daily temperatures swing about 21.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 23m. For travel, May is a comfortable month to visit.
Avg High
68.6°F
Avg Low
47.1°F
Precipitation
4.19 in
Daylight
14h 23m
May records in Decatur
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.9°F (2001) | 24.1°F (1963) | 1.85 in (1973) |
| May 2 | 88.0°F (1959) | 25.0°F (1966) | 1.50 in (1983) |
| May 3 | 88.0°F (1959) | 27.0°F (1971) | 3.65 in (2018) |
| May 4 | 88.0°F (1955) | 24.1°F (1966) | 2.52 in (1958) |
| May 5 | 89.1°F (1959) | 28.9°F (1973) | 1.42 in (2003) |
| May 6 | 125.1°F (2005) | 1.9°F (2005) | 1.70 in (1975) |
| May 7 | 87.1°F (2000) | 25.0°F (1974) | 0.71 in (1972) |
| May 8 | 86.0°F (1963) | 25.0°F (1976) | 1.04 in (1969) |
| May 9 | 88.0°F (2014) | 23.0°F (2020) | 1.23 in (2003) |
| May 10 | 88.0°F (1979) | 19.0°F (1966) | 1.55 in (1996) |
| May 11 | 87.1°F (1993) | 28.0°F (2021) | 1.70 in (1981) |
| May 12 | 89.1°F (1993) | 27.0°F (1976) | 1.98 in (1966) |
| May 13 | 88.0°F (2014) | 28.0°F (1971) | 1.82 in (2010) |
| May 14 | 89.1°F (1962) | 21.0°F (2002) | 1.04 in (1970) |
| May 15 | 91.0°F (1982) | 24.1°F (2002) | 1.70 in (2020) |
| May 16 | 91.0°F (1962) | 28.9°F (1984) | 1.42 in (1974) |
| May 17 | 91.0°F (1962) | 25.0°F (2002) | 1.07 in (1974) |
| May 18 | 91.9°F (1962) | 28.0°F (1973) | 1.88 in (2000) |
| May 19 | 91.0°F (1975) | 28.9°F (1976) | 1.88 in (2000) |
| May 20 | 91.0°F (1977) | 33.1°F (1954) | 1.50 in (2017) |
| May 21 | 91.0°F (1977) | 30.0°F (1997) | 1.01 in (1959) |
| May 22 | 90.0°F (1964) | 30.0°F (1971) | 1.59 in (1982) |
| May 23 | 91.9°F (1956) | 28.9°F (1963) | 1.79 in (1984) |
| May 24 | 89.1°F (1977) | 30.9°F (1961) | 1.10 in (1995) |
| May 25 | 91.0°F (1977) | 32.0°F (1992) | 1.04 in (1997) |
| May 26 | 90.0°F (1977) | 21.9°F (2002) | 1.87 in (2011) |
| May 27 | 91.0°F (1978) | 27.0°F (1961) | 0.80 in (1973) |
| May 28 | 93.9°F (2012) | 30.9°F (1971) | 2.05 in (2000) |
| May 29 | 95.0°F (2018) | 30.9°F (1966) | 1.20 in (1976) |
| May 30 | 91.0°F (1987) | 32.0°F (1961) | 0.95 in (2011) |
| May 31 | 90.0°F (1977) | 33.1°F (1966) | 1.33 in (2015) |