May weather in Sully, IA
The average temperature in Sully in May is 58.5°F (47.1°F–69.9°F). Average precipitation: 5.09 inches.
May is a spring month in Sully, and is warmer than the annual average of 47.5°F. Daily temperatures swing about 22.8°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 21m. For travel, May is a wet month.
Avg High
69.9°F
Avg Low
47.1°F
Precipitation
5.09 in
Daylight
14h 21m
May records in Sully
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (1926) | 25.0°F (2005) | 1.41 in (2003) |
| May 2 | 88.0°F (1952) | 25.0°F (1908) | 1.17 in (1948) |
| May 3 | 89.1°F (1918) | 19.0°F (2005) | 1.31 in (2022) |
| May 4 | 93.0°F (1918) | 19.9°F (2005) | 1.48 in (1895) |
| May 5 | 95.0°F (1909) | 25.0°F (2005) | 1.32 in (2003) |
| May 6 | 87.1°F (1966) | 24.1°F (1992) | 1.82 in (1982) |
| May 7 | 86.0°F (1916) | 23.0°F (1931) | 2.10 in (2007) |
| May 8 | 87.1°F (1966) | 27.0°F (1976) | 1.21 in (2023) |
| May 9 | 90.0°F (1963) | 24.1°F (1980) | 2.45 in (1996) |
| May 10 | 91.0°F (2022) | 26.1°F (1980) | 3.19 in (1996) |
| May 11 | 93.0°F (2022) | 30.0°F (1981) | 2.28 in (1905) |
| May 12 | 91.9°F (1956) | 28.9°F (1969) | 2.03 in (1966) |
| May 13 | 95.0°F (1915) | 30.0°F (1953) | 2.12 in (2018) |
| May 14 | 91.9°F (1932) | 28.0°F (1966) | 2.85 in (1899) |
| May 15 | 91.0°F (1988) | 26.1°F (1997) | 0.75 in (1991) |
| May 16 | 89.1°F (1931) | 28.0°F (1997) | 1.61 in (1986) |
| May 17 | 90.0°F (2019) | 28.0°F (1973) | 1.92 in (1966) |
| May 18 | 90.0°F (1917) | 28.0°F (2002) | 1.95 in (1974) |
| May 19 | 89.1°F (1911) | 28.0°F (2002) | 1.66 in (1971) |
| May 20 | 91.0°F (1925) | 28.0°F (2002) | 2.60 in (2024) |
| May 21 | 90.0°F (1925) | 30.0°F (1931) | 2.11 in (2024) |
| May 22 | 98.1°F (1925) | 30.0°F (1963) | 1.31 in (2019) |
| May 23 | 91.0°F (1921) | 33.1°F (1963) | 2.12 in (1952) |
| May 24 | 93.0°F (1926) | 33.1°F (1924) | 4.00 in (1918) |
| May 25 | 93.0°F (1911) | 32.0°F (1979) | 1.75 in (1990) |
| May 26 | 93.9°F (1926) | 33.1°F (1983) | 6.74 in (2013) |
| May 27 | 93.0°F (2018) | 30.9°F (1992) | 1.89 in (1973) |
| May 28 | 96.1°F (2018) | 33.1°F (1906) | 1.43 in (1973) |
| May 29 | 93.9°F (2018) | 30.0°F (1965) | 1.78 in (2019) |
| May 30 | 91.9°F (1926) | 34.0°F (1984) | 2.08 in (1957) |
| May 31 | 91.9°F (1914) | 33.1°F (1972) | 2.45 in (1907) |