May weather in Union Grove, WI
The average temperature in Union Grove in May is 55.9°F (45.4°F–66.4°F). Average precipitation: 4.13 inches.
May is a spring month in Union Grove, and is warmer than the annual average of 46.4°F. Daily temperatures swing about 21°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 26m. For travel, May is a comfortable month to visit.
Avg High
66.4°F
Avg Low
45.4°F
Precipitation
4.13 in
Daylight
14h 26m
May records in Union Grove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 84.9°F (2013) | 30.9°F (2015) | 1.67 in (2022) |
| May 2 | 84.9°F (2021) | 23.0°F (2004) | 1.16 in (1987) |
| May 3 | 84.0°F (2018) | 27.0°F (2005) | 1.01 in (1945) |
| May 4 | 84.0°F (2012) | 30.0°F (2005) | 1.11 in (1946) |
| May 5 | 84.0°F (2000) | 30.0°F (2011) | 0.82 in (2024) |
| May 6 | 84.9°F (2000) | 35.1°F (2004) | 1.75 in (1976) |
| May 7 | 84.9°F (1964) | 25.0°F (1974) | 0.55 in (2001) |
| May 8 | 86.0°F (2000) | 28.0°F (2017) | 2.00 in (2004) |
| May 9 | 86.0°F (2014) | 25.0°F (2020) | 1.64 in (2019) |
| May 10 | 82.0°F (2007) | 30.0°F (1974) | 1.52 in (1990) |
| May 11 | 88.0°F (2022) | 28.0°F (2021) | 1.35 in (1967) |
| May 12 | 87.1°F (2022) | 28.0°F (2021) | 0.65 in (1982) |
| May 13 | 89.1°F (2022) | 30.0°F (1974) | 3.62 in (2014) |
| May 14 | 90.0°F (2007) | 34.0°F (2015) | 3.19 in (2018) |
| May 15 | 87.1°F (2001) | 28.9°F (2016) | 0.92 in (1975) |
| May 16 | 84.0°F (2012) | 34.0°F (2014) | 1.00 in (1999) |
| May 17 | 86.0°F (1998) | 30.9°F (2002) | 1.90 in (2000) |
| May 18 | 88.0°F (1964) | 35.1°F (2023) | 1.78 in (2020) |
| May 19 | 87.1°F (1998) | 32.0°F (2008) | 1.26 in (1959) |
| May 20 | 88.0°F (2012) | 28.0°F (2002) | 1.02 in (1990) |
| May 21 | 90.0°F (2012) | 32.0°F (1997) | 2.87 in (2004) |
| May 22 | 88.0°F (1964) | 32.0°F (1997) | 2.15 in (2004) |
| May 23 | 89.1°F (1964) | 36.0°F (2025) | 0.82 in (2011) |
| May 24 | 89.1°F (2010) | 35.1°F (2013) | 1.40 in (1984) |
| May 25 | 88.0°F (2010) | 37.9°F (2002) | 0.71 in (1947) |
| May 26 | 87.1°F (2021) | 36.0°F (2013) | 0.93 in (1991) |
| May 27 | 87.1°F (2018) | 37.0°F (2011) | 1.11 in (1985) |
| May 28 | 93.9°F (2018) | 35.1°F (2008) | 1.30 in (2014) |
| May 29 | 89.1°F (2012) | 33.1°F (2021) | 0.96 in (1947) |
| May 30 | 88.0°F (2006) | 32.0°F (2021) | 1.18 in (1981) |
| May 31 | 90.0°F (2010) | 35.1°F (2003) | 1.63 in (2000) |