May weather in Salem, IL
The average temperature in Salem in May is 65.2°F (54.6°F–75.7°F). Average precipitation: 4.99 inches.
May is a spring month in Salem, and is warmer than the annual average of 54.9°F. Daily temperatures swing about 21.1°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 6m. For travel, May is a comfortable month to visit.
Avg High
75.7°F
Avg Low
54.6°F
Precipitation
4.99 in
Daylight
14h 6m
May records in Salem
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (2007) | 30.9°F (1960) | 1.53 in (1985) |
| May 2 | 89.1°F (1959) | 30.9°F (1961) | 1.98 in (1935) |
| May 3 | 89.1°F (1959) | 30.9°F (1976) | 1.39 in (1942) |
| May 4 | 91.0°F (1959) | 30.9°F (1976) | 1.68 in (2017) |
| May 5 | 91.9°F (1959) | 36.0°F (1944) | 2.38 in (2003) |
| May 6 | 89.1°F (1959) | 34.0°F (1944) | 1.75 in (1961) |
| May 7 | 89.1°F (1986) | 35.1°F (1992) | 2.23 in (1961) |
| May 8 | 91.0°F (1986) | 36.0°F (1976) | 4.55 in (1961) |
| May 9 | 88.0°F (1963) | 33.1°F (1960) | 1.39 in (1957) |
| May 10 | 90.0°F (1963) | 30.9°F (1966) | 1.95 in (1943) |
| May 11 | 88.0°F (2018) | 37.0°F (1969) | 1.51 in (1968) |
| May 12 | 91.9°F (2022) | 32.0°F (1960) | 2.35 in (1918) |
| May 13 | 90.0°F (2022) | 33.1°F (1960) | 1.77 in (2002) |
| May 14 | 91.0°F (1987) | 39.9°F (1973) | 1.85 in (1983) |
| May 15 | 90.0°F (1998) | 37.0°F (1973) | 1.82 in (1923) |
| May 16 | 91.0°F (1962) | 36.0°F (1959) | 4.30 in (1990) |
| May 17 | 93.0°F (1962) | 37.9°F (2014) | 3.22 in (1995) |
| May 18 | 91.9°F (1962) | 36.0°F (2002) | 3.88 in (1995) |
| May 19 | 91.9°F (1987) | 37.9°F (1976) | 3.22 in (1943) |
| May 20 | 93.9°F (1987) | 39.9°F (2002) | 2.02 in (2022) |
| May 21 | 93.0°F (1987) | 39.0°F (2002) | 1.70 in (1947) |
| May 22 | 93.0°F (1975) | 39.0°F (1963) | 2.48 in (1998) |
| May 23 | 91.0°F (1975) | 37.9°F (1963) | 2.34 in (1978) |
| May 24 | 91.0°F (1996) | 41.0°F (1961) | 1.49 in (1927) |
| May 25 | 91.0°F (2010) | 39.0°F (1979) | 1.61 in (1995) |
| May 26 | 91.9°F (1977) | 39.0°F (1979) | 1.35 in (2011) |
| May 27 | 98.1°F (1944) | 33.1°F (1961) | 2.12 in (2000) |
| May 28 | 96.1°F (1944) | 42.1°F (1994) | 1.43 in (1938) |
| May 29 | 100.0°F (1944) | 37.0°F (1965) | 1.01 in (1968) |
| May 30 | 99.0°F (1944) | 41.0°F (1984) | 1.37 in (2015) |
| May 31 | 95.0°F (1944) | 41.0°F (1966) | 1.59 in (1982) |