May weather in Brussels, IL
The average temperature in Brussels in May is 66.6°F (55.9°F–77.3°F). Average precipitation: 4.60 inches.
May is a spring month in Brussels, and is warmer than the annual average of 56.1°F. Daily temperatures swing about 21.4°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 14h 8m. For travel, May is a comfortable month to visit.
Avg High
77.3°F
Avg Low
55.9°F
Precipitation
4.60 in
Daylight
14h 8m
May records in Brussels
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 89.1°F (2018) | 33.1°F (2005) | 0.87 in (2007) |
| May 2 | 89.1°F (2012) | 37.9°F (2005) | 1.35 in (2019) |
| May 3 | 86.0°F (2001) | 33.1°F (2005) | 1.85 in (2013) |
| May 4 | 84.9°F (2001) | 34.0°F (2005) | 1.06 in (2003) |
| May 5 | 90.0°F (2012) | 43.0°F (2005) | 1.72 in (2022) |
| May 6 | 91.0°F (2012) | 43.0°F (2020) | 1.84 in (2002) |
| May 7 | 93.0°F (2023) | 44.1°F (2021) | 1.47 in (2002) |
| May 8 | 88.0°F (2000) | 41.0°F (2010) | 0.74 in (2002) |
| May 9 | 90.0°F (2003) | 36.0°F (2010) | 1.10 in (2018) |
| May 10 | 90.0°F (2022) | 36.0°F (2021) | 1.95 in (2003) |
| May 11 | 93.9°F (2022) | 41.0°F (2021) | 0.53 in (2008) |
| May 12 | 93.9°F (2022) | 39.9°F (2008) | 3.40 in (2002) |
| May 13 | 91.9°F (2018) | 39.9°F (2013) | 0.57 in (2023) |
| May 14 | 93.9°F (2013) | 39.9°F (2000) | 1.01 in (2024) |
| May 15 | 91.9°F (2013) | 44.1°F (2016) | 1.39 in (2015) |
| May 16 | 91.9°F (2001) | 39.9°F (2005) | 0.81 in (2002) |
| May 17 | 89.1°F (1998) | 39.0°F (2014) | 1.86 in (2020) |
| May 18 | 90.0°F (2017) | 42.1°F (2002) | 1.29 in (2018) |
| May 19 | 91.9°F (1998) | 45.0°F (2007) | 1.52 in (2004) |
| May 20 | 90.0°F (2012) | 41.0°F (2002) | 3.13 in (2013) |
| May 21 | 91.0°F (2024) | 43.0°F (2002) | 1.13 in (2022) |
| May 22 | 88.0°F (2004) | 44.1°F (2002) | 2.28 in (1998) |
| May 23 | 90.0°F (2010) | 46.0°F (2025) | 0.59 in (2008) |
| May 24 | 91.9°F (2012) | 46.0°F (2001) | 0.60 in (2004) |
| May 25 | 91.0°F (2012) | 48.0°F (1999) | 1.57 in (2008) |
| May 26 | 95.0°F (2012) | 48.0°F (1999) | 1.05 in (2024) |
| May 27 | 93.9°F (2018) | 48.0°F (1999) | 1.35 in (2004) |
| May 28 | 93.9°F (2012) | 48.9°F (2005) | 0.36 in (2009) |
| May 29 | 91.9°F (2006) | 48.9°F (2021) | 0.73 in (2015) |
| May 30 | 93.0°F (2011) | 44.1°F (2021) | 0.75 in (2008) |
| May 31 | 91.9°F (2000) | 52.0°F (2012) | 1.62 in (2013) |