May weather in Germantown, WI
The average temperature in Germantown in May is 55.6°F (44.9°F–66.3°F). Average precipitation: 3.95 inches. Average snowfall is 0.3 inches.
May is a spring month in Germantown, and is warmer than the annual average of 45.8°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 29m. For travel, May is a comfortable month to visit.
Avg High
66.3°F
Avg Low
44.9°F
Precipitation
3.95 in
Snow
0.3 in
May records in Germantown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (1952) | 24.1°F (1978) | 1.70 in (2003) |
| May 2 | 88.0°F (1959) | 21.9°F (1990) | 0.74 in (1945) |
| May 3 | 88.0°F (1959) | 25.0°F (2004) | 1.15 in (2013) |
| May 4 | 89.1°F (1952) | 24.1°F (1990) | 1.21 in (2001) |
| May 5 | 89.1°F (1949) | 28.0°F (1973) | 0.74 in (2003) |
| May 6 | 87.1°F (1980) | 21.0°F (1970) | 1.63 in (1960) |
| May 7 | 84.0°F (1965) | 23.0°F (1974) | 0.83 in (1999) |
| May 8 | 84.0°F (1963) | 27.0°F (1948) | 1.30 in (2024) |
| May 9 | 84.9°F (1979) | 23.0°F (1947) | 0.87 in (1995) |
| May 10 | 82.9°F (1993) | 19.9°F (1966) | 2.48 in (1990) |
| May 11 | 87.1°F (1979) | 21.9°F (1990) | 1.21 in (2004) |
| May 12 | 86.0°F (1965) | 27.0°F (1987) | 1.76 in (1970) |
| May 13 | 91.0°F (2022) | 26.1°F (1996) | 1.85 in (1978) |
| May 14 | 88.0°F (2022) | 30.9°F (1953) | 1.15 in (2009) |
| May 15 | 88.0°F (2007) | 28.9°F (1969) | 0.81 in (2001) |
| May 16 | 87.1°F (1962) | 28.0°F (1969) | 1.07 in (2007) |
| May 17 | 89.1°F (1977) | 25.0°F (1983) | 0.95 in (1947) |
| May 18 | 88.0°F (1962) | 30.0°F (2002) | 3.55 in (2000) |
| May 19 | 89.1°F (1977) | 30.0°F (1976) | 1.25 in (2000) |
| May 20 | 91.9°F (1975) | 25.0°F (1985) | 1.15 in (2004) |
| May 21 | 90.0°F (1977) | 26.1°F (2002) | 2.08 in (2025) |
| May 22 | 88.0°F (1956) | 30.0°F (1997) | 2.50 in (2004) |
| May 23 | 88.0°F (1964) | 24.1°F (1987) | 1.21 in (1982) |
| May 24 | 88.0°F (2010) | 28.9°F (1958) | 0.54 in (1946) |
| May 25 | 88.0°F (1977) | 28.9°F (1988) | 1.59 in (1984) |
| May 26 | 86.0°F (2018) | 30.0°F (1983) | 0.80 in (2006) |
| May 27 | 89.1°F (1985) | 28.9°F (1961) | 0.86 in (1991) |
| May 28 | 93.0°F (2018) | 30.9°F (2008) | 1.65 in (1973) |
| May 29 | 91.0°F (2018) | 23.0°F (1993) | 1.53 in (2017) |
| May 30 | 90.0°F (2006) | 21.9°F (1990) | 1.53 in (2004) |
| May 31 | 90.0°F (2010) | 30.9°F (1996) | 2.31 in (1958) |