May weather in Deerfield, WI
The average temperature in Deerfield in May is 58.6°F (47.7°F–69.5°F). Average precipitation: 4.39 inches.
May is a spring month in Deerfield, and is warmer than the annual average of 47.4°F. Daily temperatures swing about 21.8°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 28m. For travel, May is a comfortable month to visit.
Avg High
69.5°F
Avg Low
47.7°F
Precipitation
4.39 in
Snow
0.1 in
May records in Deerfield
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (1952) | 21.0°F (1978) | 2.00 in (2003) |
| May 2 | 90.0°F (1901) | 19.9°F (1945) | 2.48 in (1930) |
| May 3 | 87.1°F (1928) | 27.0°F (2004) | 1.86 in (1912) |
| May 4 | 88.0°F (1959) | 24.1°F (1935) | 1.15 in (2021) |
| May 5 | 89.1°F (1949) | 23.0°F (2002) | 1.64 in (1912) |
| May 6 | 91.0°F (1934) | 21.0°F (2002) | 2.73 in (1960) |
| May 7 | 87.1°F (1896) | 26.1°F (1989) | 1.41 in (2012) |
| May 8 | 88.0°F (1896) | 27.0°F (1947) | 0.98 in (1904) |
| May 9 | 93.9°F (1934) | 24.1°F (1966) | 0.84 in (2019) |
| May 10 | 88.0°F (1911) | 28.0°F (1913) | 1.83 in (2013) |
| May 11 | 91.9°F (2022) | 24.1°F (1907) | 1.86 in (1905) |
| May 12 | 91.9°F (2022) | 19.9°F (1934) | 1.08 in (1914) |
| May 13 | 93.9°F (2022) | 30.9°F (1895) | 2.43 in (1978) |
| May 14 | 93.9°F (2022) | 28.0°F (1910) | 1.42 in (1945) |
| May 15 | 89.1°F (2007) | 28.9°F (1934) | 1.28 in (1985) |
| May 16 | 89.1°F (1977) | 30.9°F (1895) | 1.45 in (1982) |
| May 17 | 88.0°F (1998) | 33.1°F (1915) | 3.20 in (1999) |
| May 18 | 90.0°F (1934) | 30.0°F (1894) | 2.10 in (2000) |
| May 19 | 91.9°F (1934) | 28.9°F (1929) | 2.10 in (1933) |
| May 20 | 91.9°F (1934) | 28.0°F (1907) | 2.48 in (1913) |
| May 21 | 90.0°F (1972) | 30.9°F (1895) | 1.21 in (1903) |
| May 22 | 91.9°F (1925) | 33.1°F (2002) | 2.80 in (2004) |
| May 23 | 88.0°F (1936) | 28.9°F (2002) | 1.93 in (1920) |
| May 24 | 91.0°F (2010) | 30.9°F (1925) | 2.55 in (1922) |
| May 25 | 93.9°F (2010) | 24.1°F (1934) | 1.83 in (2024) |
| May 26 | 91.0°F (1978) | 27.0°F (1925) | 1.37 in (1933) |
| May 27 | 93.0°F (1978) | 30.0°F (1934) | 2.45 in (1973) |
| May 28 | 95.0°F (2012) | 30.9°F (1906) | 2.20 in (1927) |
| May 29 | 95.0°F (2018) | 30.9°F (1947) | 1.78 in (1947) |
| May 30 | 91.9°F (2018) | 35.1°F (1894) | 2.30 in (2004) |
| May 31 | 102.9°F (1934) | 32.0°F (1897) | 2.14 in (1942) |