May weather in Galena, MO
The average temperature in Galena in May is 64.9°F (53.2°F–76.6°F). Average precipitation: 5.46 inches.
May is a spring month in Galena, and is warmer than the annual average of 56.2°F. Daily temperatures swing about 23.4°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 13h 58m. For travel, May is a wet month.
Avg High
76.6°F
Avg Low
53.2°F
Precipitation
5.46 in
Daylight
13h 58m
May records in Galena
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (1965) | 30.9°F (2014) | 2.21 in (1970) |
| May 2 | 84.9°F (2003) | 30.9°F (1967) | 2.65 in (1954) |
| May 3 | 89.1°F (2020) | 30.0°F (1967) | 2.55 in (1990) |
| May 4 | 88.0°F (1965) | 30.0°F (1967) | 1.57 in (1999) |
| May 5 | 91.9°F (2014) | 32.0°F (2013) | 2.36 in (1999) |
| May 6 | 91.9°F (2014) | 28.0°F (1992) | 2.80 in (1960) |
| May 7 | 89.1°F (1965) | 28.9°F (1992) | 2.06 in (1900) |
| May 8 | 88.0°F (1966) | 30.9°F (1992) | 2.39 in (1978) |
| May 9 | 89.1°F (2000) | 30.0°F (1980) | 1.89 in (1943) |
| May 10 | 91.0°F (2011) | 32.0°F (1997) | 3.89 in (1943) |
| May 11 | 90.0°F (1980) | 33.1°F (2022) | 2.96 in (1943) |
| May 12 | 91.0°F (2022) | 34.0°F (1989) | 2.00 in (1929) |
| May 13 | 93.0°F (2022) | 33.1°F (1971) | 2.93 in (1933) |
| May 14 | 91.0°F (2022) | 33.1°F (1973) | 1.50 in (1967) |
| May 15 | 90.0°F (2013) | 33.1°F (1973) | 1.20 in (1933) |
| May 16 | 87.1°F (1974) | 33.1°F (1997) | 3.00 in (2007) |
| May 17 | 90.0°F (2001) | 33.1°F (1973) | 1.06 in (2018) |
| May 18 | 89.1°F (2001) | 37.0°F (1976) | 4.61 in (1943) |
| May 19 | 89.1°F (1975) | 36.0°F (1976) | 2.20 in (2021) |
| May 20 | 90.0°F (1998) | 37.9°F (1981) | 2.56 in (1979) |
| May 21 | 89.1°F (1964) | 33.1°F (1993) | 2.94 in (1939) |
| May 22 | 89.1°F (1998) | 39.9°F (1993) | 1.53 in (1939) |
| May 23 | 89.1°F (2005) | 41.0°F (1967) | 1.54 in (1952) |
| May 24 | 91.0°F (2000) | 41.0°F (1983) | 1.00 in (1949) |
| May 25 | 89.1°F (1964) | 37.0°F (1979) | 1.90 in (1957) |
| May 26 | 91.9°F (2006) | 37.9°F (1988) | 2.85 in (2006) |
| May 27 | 95.0°F (2012) | 41.0°F (1988) | 1.60 in (1955) |
| May 28 | 91.9°F (2012) | 39.0°F (1984) | 2.03 in (2021) |
| May 29 | 91.0°F (2012) | 39.0°F (1984) | 1.80 in (1935) |
| May 30 | 93.0°F (2012) | 37.0°F (1984) | 3.35 in (1926) |
| May 31 | 91.0°F (1998) | 39.0°F (1983) | 2.90 in (2013) |