May weather in Unionville, IA
The average temperature in Unionville in May is 61.4°F (51.3°F–71.4°F). Average precipitation: 5.36 inches.
May is a spring month in Unionville, and is warmer than the annual average of 50.4°F. Daily temperatures swing about 20.1°F between overnight low and afternoon high. Daylight averages about 14h 17m. For travel, May is a wet month.
Avg High
71.4°F
Avg Low
51.3°F
Precipitation
5.36 in
Daylight
14h 17m
May records in Unionville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (1992) | 34.0°F (1978) | 1.60 in (1973) |
| May 2 | 87.1°F (1992) | 32.0°F (1970) | 1.00 in (1983) |
| May 3 | 84.0°F (1987) | 30.9°F (1976) | 2.67 in (2024) |
| May 4 | 81.0°F (1980) | 30.0°F (2005) | 0.98 in (1990) |
| May 5 | 84.0°F (1982) | 30.9°F (2005) | 1.75 in (1991) |
| May 6 | 86.0°F (1980) | 32.0°F (1989) | 1.22 in (1976) |
| May 7 | 87.1°F (2004) | 28.0°F (1989) | 2.50 in (2007) |
| May 8 | 90.0°F (2023) | 33.1°F (1976) | 1.48 in (1995) |
| May 9 | 84.9°F (2004) | 28.9°F (1980) | 1.46 in (2021) |
| May 10 | 91.0°F (2022) | 32.0°F (2010) | 1.38 in (1996) |
| May 11 | 91.9°F (2011) | 36.0°F (1981) | 1.47 in (2010) |
| May 12 | 91.0°F (2022) | 37.0°F (2008) | 1.37 in (2002) |
| May 13 | 91.9°F (2022) | 34.0°F (1971) | 1.40 in (1978) |
| May 14 | 87.1°F (1991) | 34.0°F (1980) | 3.05 in (1970) |
| May 15 | 91.9°F (1988) | 35.1°F (1973) | 1.47 in (2020) |
| May 16 | 88.0°F (2017) | 37.0°F (1997) | 2.08 in (1976) |
| May 17 | 91.9°F (2019) | 37.0°F (1973) | 2.61 in (1986) |
| May 18 | 90.0°F (1996) | 33.1°F (2014) | 0.74 in (2017) |
| May 19 | 90.0°F (1996) | 37.0°F (2015) | 2.17 in (2019) |
| May 20 | 90.0°F (1996) | 37.9°F (2015) | 2.37 in (2025) |
| May 21 | 88.0°F (1987) | 37.0°F (2002) | 0.90 in (2010) |
| May 22 | 86.0°F (2004) | 41.0°F (2002) | 1.67 in (1998) |
| May 23 | 90.0°F (1975) | 42.1°F (2022) | 1.86 in (1996) |
| May 24 | 86.0°F (2018) | 41.0°F (2001) | 2.00 in (1998) |
| May 25 | 89.1°F (2010) | 39.0°F (1971) | 2.08 in (1990) |
| May 26 | 87.1°F (1978) | 36.0°F (1971) | 2.20 in (2019) |
| May 27 | 93.9°F (1985) | 39.9°F (1971) | 2.40 in (1973) |
| May 28 | 97.0°F (2018) | 39.9°F (1971) | 1.56 in (1995) |
| May 29 | 90.0°F (2006) | 42.1°F (1971) | 2.95 in (2019) |
| May 30 | 91.0°F (2018) | 41.0°F (2021) | 2.70 in (2004) |
| May 31 | 88.0°F (2003) | 41.0°F (1972) | 2.43 in (1999) |