May weather in Grundy Center, IA
The average temperature in Grundy Center in May is 59.3°F (48.3°F–70.4°F). Average precipitation: 4.89 inches.
May is a spring month in Grundy Center, and is warmer than the annual average of 47.1°F. Daily temperatures swing about 22.1°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 25m. For travel, May is a comfortable month to visit.
Avg High
70.4°F
Avg Low
48.3°F
Precipitation
4.89 in
Daylight
14h 25m
May records in Grundy Center
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (2007) | 24.1°F (1966) | 1.92 in (1972) |
| May 2 | 90.0°F (1901) | 27.0°F (1908) | 1.15 in (1946) |
| May 3 | 91.0°F (1918) | 21.0°F (2005) | 2.01 in (1969) |
| May 4 | 91.9°F (1918) | 19.9°F (1907) | 1.67 in (1913) |
| May 5 | 93.0°F (1909) | 28.9°F (1925) | 1.77 in (2003) |
| May 6 | 96.1°F (1934) | 27.0°F (1925) | 1.75 in (1930) |
| May 7 | 93.9°F (1934) | 26.1°F (1925) | 1.76 in (1901) |
| May 8 | 91.0°F (1934) | 28.0°F (1931) | 1.65 in (1927) |
| May 9 | 97.0°F (1934) | 21.9°F (1945) | 2.88 in (1990) |
| May 10 | 89.1°F (1911) | 21.9°F (1966) | 1.65 in (1995) |
| May 11 | 93.0°F (2011) | 25.0°F (1907) | 1.99 in (1912) |
| May 12 | 91.9°F (2022) | 30.0°F (1895) | 1.67 in (1999) |
| May 13 | 91.9°F (2022) | 30.0°F (1953) | 2.10 in (2010) |
| May 14 | 91.9°F (1932) | 28.0°F (1966) | 1.96 in (1970) |
| May 15 | 97.0°F (2013) | 30.0°F (1945) | 2.40 in (1899) |
| May 16 | 91.0°F (1936) | 30.0°F (1929) | 1.63 in (1991) |
| May 17 | 93.0°F (1934) | 30.9°F (1930) | 1.32 in (1918) |
| May 18 | 97.0°F (1934) | 28.9°F (1894) | 2.15 in (1927) |
| May 19 | 96.1°F (1934) | 30.0°F (1894) | 2.91 in (2000) |
| May 20 | 97.0°F (1934) | 28.0°F (1907) | 1.89 in (2025) |
| May 21 | 90.0°F (1934) | 30.0°F (1931) | 1.47 in (1950) |
| May 22 | 98.1°F (1925) | 27.0°F (1963) | 2.49 in (2004) |
| May 23 | 91.0°F (1925) | 28.0°F (1963) | 1.40 in (1965) |
| May 24 | 96.1°F (1939) | 32.0°F (1963) | 1.80 in (1998) |
| May 25 | 93.0°F (1911) | 28.9°F (1925) | 3.03 in (1915) |
| May 26 | 93.0°F (1967) | 33.1°F (1905) | 2.18 in (1903) |
| May 27 | 98.1°F (1911) | 34.0°F (1907) | 2.23 in (2013) |
| May 28 | 98.1°F (2018) | 28.9°F (1947) | 2.57 in (1954) |
| May 29 | 100.0°F (1934) | 28.0°F (1947) | 2.77 in (1976) |
| May 30 | 100.9°F (1934) | 35.1°F (1897) | 3.65 in (2013) |
| May 31 | 106.0°F (1934) | 30.0°F (1897) | 2.94 in (2000) |