May weather in Plum City, WI
The average temperature in Plum City in May is 57.4°F (46.6°F–68.3°F). Average precipitation: 4.22 inches.
May is a spring month in Plum City, and is warmer than the annual average of 45.1°F. Daily temperatures swing about 21.7°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 37m. For travel, May is a comfortable month to visit.
Avg High
68.3°F
Avg Low
46.6°F
Precipitation
4.22 in
Daylight
14h 37m
May records in Plum City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 82.9°F (2018) | 33.1°F (2025) | 1.40 in (1954) |
| May 2 | 86.0°F (2021) | 32.0°F (2013) | 1.21 in (1935) |
| May 3 | 82.0°F (2012) | 30.0°F (2011) | 1.01 in (2024) |
| May 4 | 82.9°F (2015) | 28.9°F (2011) | 1.62 in (2003) |
| May 5 | 78.1°F (2010) | 34.0°F (2013) | 1.67 in (1938) |
| May 6 | 80.1°F (2018) | 37.9°F (2014) | 2.65 in (2012) |
| May 7 | 89.1°F (2016) | 37.0°F (2021) | 1.34 in (1998) |
| May 8 | 84.0°F (2018) | 28.9°F (2021) | 0.77 in (2003) |
| May 9 | 78.1°F (2007) | 28.0°F (2020) | 1.70 in (2019) |
| May 10 | 84.0°F (2022) | 34.0°F (2010) | 2.33 in (2003) |
| May 11 | 87.1°F (2007) | 28.9°F (2021) | 0.49 in (2002) |
| May 12 | 84.9°F (2025) | 28.9°F (2020) | 1.98 in (2014) |
| May 13 | 93.9°F (2022) | 30.9°F (2013) | 0.73 in (1995) |
| May 14 | 84.9°F (2025) | 36.0°F (2016) | 0.41 in (2023) |
| May 15 | 93.9°F (2013) | 28.9°F (2016) | 0.77 in (1998) |
| May 16 | 84.0°F (2025) | 30.9°F (2016) | 1.16 in (2017) |
| May 17 | 84.0°F (2017) | 34.0°F (2009) | 1.53 in (2000) |
| May 18 | 84.0°F (2018) | 36.0°F (2016) | 2.45 in (2020) |
| May 19 | 91.0°F (2012) | 35.1°F (2015) | 1.25 in (2019) |
| May 20 | 91.9°F (2009) | 35.1°F (2015) | 1.40 in (2013) |
| May 21 | 90.0°F (2009) | 35.1°F (2015) | 1.93 in (2025) |
| May 22 | 82.9°F (2007) | 36.0°F (2008) | 0.90 in (2024) |
| May 23 | 84.0°F (2007) | 36.0°F (2022) | 1.10 in (1946) |
| May 24 | 87.1°F (2018) | 36.0°F (2022) | 1.22 in (2007) |
| May 25 | 91.9°F (2010) | 39.0°F (2025) | 1.00 in (2015) |
| May 26 | 89.1°F (2010) | 39.9°F (2025) | 1.00 in (2020) |
| May 27 | 93.0°F (2018) | 37.9°F (2008) | 1.24 in (1954) |
| May 28 | 93.0°F (2018) | 39.0°F (2021) | 1.96 in (2019) |
| May 29 | 97.0°F (2018) | 37.0°F (2021) | 1.86 in (1955) |
| May 30 | 91.0°F (2018) | 37.0°F (2021) | 1.30 in (1993) |
| May 31 | 89.1°F (2010) | 37.0°F (2015) | 2.88 in (2000) |