May weather in Walnut Hill, IL
The average temperature in Walnut Hill in May is 64.4°F (53.5°F–75.2°F). Average precipitation: 5.20 inches.
May is a spring month in Walnut Hill, and is warmer than the annual average of 54.7°F. Daily temperatures swing about 21.7°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 6m. For travel, May is a wet month.
Avg High
75.2°F
Avg Low
53.5°F
Precipitation
5.20 in
Daylight
14h 6m
May records in Walnut Hill
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 88.0°F (2007) | 35.1°F (2015) | 1.21 in (2010) |
| May 2 | 86.0°F (2007) | 35.1°F (2005) | 1.43 in (2011) |
| May 3 | 87.1°F (2012) | 35.1°F (2005) | 1.53 in (2022) |
| May 4 | 82.9°F (2001) | 34.0°F (2011) | 1.30 in (2017) |
| May 5 | 84.9°F (2012) | 34.0°F (2011) | 2.85 in (2012) |
| May 6 | 88.0°F (2012) | 41.0°F (2005) | 1.02 in (1999) |
| May 7 | 89.1°F (2012) | 37.9°F (2021) | 1.94 in (2002) |
| May 8 | 84.0°F (2004) | 37.9°F (2021) | 3.00 in (2008) |
| May 9 | 84.9°F (2007) | 33.1°F (2020) | 2.70 in (2025) |
| May 10 | 84.0°F (2004) | 34.0°F (2020) | 0.55 in (2003) |
| May 11 | 87.1°F (2018) | 36.0°F (2020) | 2.05 in (2006) |
| May 12 | 91.0°F (2022) | 35.1°F (2013) | 1.12 in (2016) |
| May 13 | 90.0°F (2022) | 36.0°F (2013) | 2.40 in (2002) |
| May 14 | 88.0°F (2018) | 37.0°F (2021) | 2.03 in (2008) |
| May 15 | 89.1°F (1998) | 37.9°F (2016) | 1.09 in (2014) |
| May 16 | 90.0°F (2001) | 39.0°F (2005) | 0.92 in (2010) |
| May 17 | 91.9°F (2001) | 36.0°F (2014) | 0.78 in (2006) |
| May 18 | 87.1°F (2019) | 34.0°F (2002) | 0.51 in (2016) |
| May 19 | 87.1°F (1998) | 35.1°F (2002) | 0.99 in (2001) |
| May 20 | 91.0°F (1998) | 37.0°F (2002) | 1.86 in (2025) |
| May 21 | 88.0°F (2012) | 37.0°F (2002) | 0.98 in (2012) |
| May 22 | 89.1°F (2004) | 39.0°F (2002) | 1.52 in (2019) |
| May 23 | 87.1°F (2004) | 43.0°F (2002) | 0.54 in (1998) |
| May 24 | 88.0°F (2010) | 41.0°F (2013) | 1.29 in (2011) |
| May 25 | 90.0°F (2000) | 41.0°F (2001) | 1.70 in (2006) |
| May 26 | 88.0°F (2006) | 39.9°F (2001) | 1.43 in (2004) |
| May 27 | 90.0°F (2012) | 45.0°F (1999) | 1.46 in (2000) |
| May 28 | 90.0°F (2012) | 46.9°F (2003) | 1.46 in (2021) |
| May 29 | 91.0°F (2018) | 46.9°F (2001) | 1.22 in (2019) |
| May 30 | 88.0°F (1998) | 41.0°F (2021) | 2.68 in (2015) |
| May 31 | 89.1°F (2011) | 43.0°F (2021) | 2.26 in (2013) |