May weather in Irondale, MO
The average temperature in Irondale in May is 64.1°F (54.1°F–74.0°F). Average precipitation: 5.29 inches.
May is a spring month in Irondale, and is warmer than the annual average of 54.8°F. Daily temperatures swing about 19.9°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 3m. For travel, May is a wet month.
Avg High
74.0°F
Avg Low
54.1°F
Precipitation
5.29 in
Daylight
14h 3m
May records in Irondale
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 90.0°F (1895) | 28.9°F (1897) | 1.51 in (2019) |
| May 2 | 89.1°F (1901) | 28.0°F (1897) | 1.60 in (2011) |
| May 3 | 88.0°F (1901) | 32.0°F (1994) | 1.36 in (2024) |
| May 4 | 88.0°F (1895) | 32.0°F (1900) | 2.10 in (2013) |
| May 5 | 91.0°F (2014) | 33.1°F (2013) | 2.79 in (1894) |
| May 6 | 93.9°F (2014) | 30.9°F (1898) | 1.70 in (2022) |
| May 7 | 88.0°F (1895) | 32.0°F (1898) | 1.83 in (2002) |
| May 8 | 91.0°F (1896) | 32.0°F (1898) | 1.86 in (2008) |
| May 9 | 89.1°F (1896) | 36.0°F (1898) | 2.64 in (2009) |
| May 10 | 90.0°F (1895) | 28.9°F (1900) | 1.79 in (1986) |
| May 11 | 93.9°F (1994) | 35.1°F (2020) | 1.12 in (2006) |
| May 12 | 91.0°F (2022) | 35.1°F (2020) | 2.40 in (2016) |
| May 13 | 91.9°F (2022) | 32.0°F (2000) | 1.27 in (2004) |
| May 14 | 88.0°F (2022) | 26.1°F (1895) | 1.42 in (2009) |
| May 15 | 91.0°F (2013) | 28.9°F (1897) | 1.18 in (1996) |
| May 16 | 90.0°F (2001) | 30.0°F (1897) | 2.28 in (2002) |
| May 17 | 88.0°F (1894) | 33.1°F (1897) | 1.34 in (2016) |
| May 18 | 89.1°F (1996) | 33.1°F (1895) | 2.00 in (1995) |
| May 19 | 91.0°F (1996) | 34.0°F (1894) | 1.84 in (1981) |
| May 20 | 91.9°F (1902) | 30.9°F (1894) | 2.39 in (2025) |
| May 21 | 91.9°F (1902) | 32.0°F (1894) | 1.72 in (2018) |
| May 22 | 89.1°F (1902) | 30.9°F (1895) | 1.25 in (2019) |
| May 23 | 91.0°F (1901) | 33.1°F (1895) | 0.47 in (2014) |
| May 24 | 90.0°F (1896) | 37.0°F (1895) | 1.70 in (1902) |
| May 25 | 91.9°F (1896) | 28.9°F (1897) | 1.95 in (2020) |
| May 26 | 88.0°F (1985) | 35.1°F (1901) | 1.63 in (2011) |
| May 27 | 90.0°F (1896) | 37.0°F (1901) | 1.78 in (2024) |
| May 28 | 91.0°F (1895) | 39.0°F (1902) | 1.51 in (2017) |
| May 29 | 93.0°F (1895) | 37.0°F (1901) | 0.79 in (1986) |
| May 30 | 93.0°F (1895) | 37.9°F (1897) | 1.60 in (2015) |
| May 31 | 93.9°F (1895) | 30.0°F (1897) | 2.51 in (2013) |