May weather in Iona, MN
The average temperature in Iona in May is 55.7°F (44.9°F–66.5°F). Average precipitation: 4.02 inches. Average snowfall is 0.3 inches.
May is a spring month in Iona, and is warmer than the annual average of 43.1°F. Daily temperatures swing about 21.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 14h 33m. For travel, May is a comfortable month to visit.
Avg High
66.5°F
Avg Low
44.9°F
Precipitation
4.02 in
Snow
0.3 in
May records in Iona
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 91.9°F (1987) | 26.1°F (1990) | 1.53 in (2017) |
| May 2 | 89.1°F (2021) | 23.0°F (1976) | 0.71 in (2008) |
| May 3 | 84.0°F (1982) | 21.9°F (2005) | 0.63 in (1977) |
| May 4 | 84.9°F (1980) | 28.0°F (2005) | 0.50 in (2024) |
| May 5 | 86.0°F (1998) | 30.0°F (1992) | 0.90 in (2012) |
| May 6 | 89.1°F (2004) | 25.0°F (1976) | 3.78 in (2012) |
| May 7 | 91.9°F (2016) | 27.0°F (2021) | 1.55 in (1993) |
| May 8 | 84.0°F (2000) | 27.0°F (2021) | 2.95 in (1993) |
| May 9 | 90.0°F (1987) | 28.0°F (2010) | 1.68 in (2019) |
| May 10 | 91.9°F (1987) | 27.0°F (1981) | 0.75 in (2016) |
| May 11 | 89.1°F (2007) | 28.0°F (1981) | 1.33 in (2015) |
| May 12 | 86.0°F (1991) | 27.0°F (2013) | 1.92 in (2022) |
| May 13 | 91.9°F (1987) | 25.0°F (1997) | 1.00 in (2023) |
| May 14 | 91.0°F (2007) | 28.9°F (2004) | 1.25 in (2023) |
| May 15 | 96.1°F (2013) | 28.0°F (1997) | 1.06 in (1990) |
| May 16 | 91.9°F (2001) | 27.0°F (2014) | 1.27 in (2000) |
| May 17 | 93.0°F (1987) | 28.0°F (1988) | 2.01 in (2020) |
| May 18 | 91.0°F (2012) | 33.1°F (2002) | 2.75 in (2000) |
| May 19 | 96.1°F (1998) | 32.0°F (1981) | 1.24 in (1990) |
| May 20 | 91.0°F (1975) | 30.0°F (2002) | 0.99 in (2012) |
| May 21 | 88.0°F (1973) | 33.1°F (2019) | 1.15 in (1999) |
| May 22 | 88.0°F (1975) | 34.0°F (2022) | 0.51 in (2019) |
| May 23 | 84.0°F (2012) | 36.0°F (2017) | 0.85 in (2007) |
| May 24 | 91.0°F (2006) | 33.1°F (1992) | 1.55 in (2012) |
| May 25 | 93.0°F (2010) | 36.0°F (1992) | 1.90 in (2011) |
| May 26 | 96.1°F (2018) | 30.9°F (1992) | 1.00 in (2012) |
| May 27 | 84.9°F (1983) | 32.0°F (1992) | 1.04 in (1980) |
| May 28 | 89.1°F (2006) | 35.1°F (1992) | 1.68 in (2019) |
| May 29 | 93.9°F (2006) | 37.9°F (2021) | 1.31 in (1985) |
| May 30 | 91.9°F (2010) | 39.9°F (2012) | 3.30 in (2004) |
| May 31 | 90.0°F (2002) | 37.9°F (2015) | 0.85 in (2024) |