May weather in Quincy, IL
The average temperature in Quincy in May is 64.1°F (54.2°F–74.1°F). Average precipitation: 4.80 inches.
May is a spring month in Quincy, and is warmer than the annual average of 53.7°F. Daily temperatures swing about 19.9°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 14h 12m. For travel, May is a comfortable month to visit.
Avg High
74.1°F
Avg Low
54.2°F
Precipitation
4.80 in
Daylight
14h 12m
May records in Quincy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 86.0°F (1992) | 36.0°F (1978) | 1.55 in (2019) |
| May 2 | 84.9°F (2007) | 35.1°F (1978) | 1.15 in (1983) |
| May 3 | 86.0°F (2007) | 36.0°F (2005) | 1.20 in (1942) |
| May 4 | 84.0°F (2001) | 33.1°F (2005) | 1.70 in (2013) |
| May 5 | 90.0°F (1943) | 33.1°F (2005) | 1.82 in (1991) |
| May 6 | 89.1°F (2012) | 35.1°F (1989) | 1.45 in (1967) |
| May 7 | 89.1°F (2012) | 34.0°F (1989) | 1.82 in (1978) |
| May 8 | 91.0°F (2023) | 34.0°F (1989) | 1.44 in (1961) |
| May 9 | 90.0°F (1979) | 35.1°F (1980) | 2.13 in (2002) |
| May 10 | 88.0°F (2003) | 34.0°F (1943) | 1.48 in (1957) |
| May 11 | 91.9°F (2011) | 39.0°F (2020) | 1.60 in (2010) |
| May 12 | 93.0°F (2022) | 39.0°F (2020) | 2.01 in (2002) |
| May 13 | 93.0°F (2022) | 39.9°F (1989) | 1.37 in (1955) |
| May 14 | 88.0°F (1991) | 39.0°F (2021) | 1.23 in (1985) |
| May 15 | 91.9°F (1988) | 39.0°F (1981) | 1.55 in (2024) |
| May 16 | 89.1°F (1977) | 37.0°F (1997) | 2.60 in (1963) |
| May 17 | 93.0°F (1939) | 37.9°F (1997) | 1.42 in (1957) |
| May 18 | 91.9°F (1996) | 39.0°F (2014) | 2.47 in (1981) |
| May 19 | 91.0°F (1996) | 35.1°F (1940) | 1.35 in (1991) |
| May 20 | 91.0°F (1996) | 42.1°F (1981) | 3.65 in (2025) |
| May 21 | 90.0°F (1941) | 41.0°F (2002) | 1.81 in (1982) |
| May 22 | 89.1°F (2024) | 41.0°F (2002) | 1.41 in (1976) |
| May 23 | 88.0°F (1939) | 42.1°F (1945) | 1.92 in (1968) |
| May 24 | 98.1°F (1939) | 37.9°F (2002) | 1.11 in (1988) |
| May 25 | 93.0°F (2010) | 43.0°F (1992) | 2.38 in (1991) |
| May 26 | 91.0°F (2010) | 43.0°F (1979) | 1.05 in (2019) |
| May 27 | 91.9°F (1977) | 39.0°F (1992) | 2.17 in (1973) |
| May 28 | 96.1°F (2018) | 39.9°F (1992) | 4.32 in (1955) |
| May 29 | 95.0°F (2012) | 39.9°F (1947) | 2.00 in (2013) |
| May 30 | 91.9°F (2006) | 39.9°F (1947) | 1.60 in (1991) |
| May 31 | 93.0°F (1937) | 37.9°F (1947) | 2.10 in (1974) |