May weather in Bannockburn, IL
The average temperature in Bannockburn in May is 59.6°F (49.7°F–69.5°F). Average precipitation: 3.76 inches.
May is a spring month in Bannockburn, and is warmer than the annual average of 50.8°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 14h 24m. For travel, May is a comfortable month to visit.
Avg High
69.5°F
Avg Low
49.7°F
Precipitation
3.76 in
Daylight
14h 24m
May records in Bannockburn
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (2018) | 35.1°F (2005) | 1.20 in (2002) |
| May 2 | 87.1°F (2018) | 33.1°F (2004) | 2.04 in (2018) |
| May 3 | 87.1°F (2012) | 28.9°F (2004) | 1.12 in (2022) |
| May 4 | 80.1°F (2000) | 33.1°F (2005) | 1.14 in (2003) |
| May 5 | 82.9°F (2000) | 35.1°F (2005) | 1.00 in (2015) |
| May 6 | 84.9°F (2000) | 37.0°F (2020) | 0.67 in (2009) |
| May 7 | 86.0°F (2023) | 35.1°F (2017) | 1.66 in (1998) |
| May 8 | 89.1°F (2014) | 33.1°F (2017) | 0.44 in (2019) |
| May 9 | 87.1°F (2004) | 30.2°F (2020) | 0.90 in (2003) |
| May 10 | 90.0°F (2022) | 37.0°F (2010) | 1.41 in (2001) |
| May 11 | 91.0°F (2022) | 35.1°F (2021) | 1.82 in (2002) |
| May 12 | 93.0°F (2022) | 35.1°F (2021) | 1.34 in (2014) |
| May 13 | 91.0°F (2022) | 34.0°F (2013) | 2.00 in (2010) |
| May 14 | 90.0°F (2007) | 39.9°F (1999) | 1.72 in (2018) |
| May 15 | 93.0°F (2025) | 34.0°F (2016) | 0.57 in (2020) |
| May 16 | 87.1°F (2001) | 33.1°F (1997) | 1.00 in (2002) |
| May 17 | 87.1°F (1998) | 36.0°F (2002) | 2.59 in (2020) |
| May 18 | 91.9°F (1998) | 35.1°F (2002) | 1.02 in (2000) |
| May 19 | 90.0°F (1998) | 37.0°F (2008) | 0.50 in (2005) |
| May 20 | 91.0°F (2012) | 35.1°F (2002) | 0.94 in (2013) |
| May 21 | 89.1°F (2021) | 33.1°F (2002) | 1.59 in (2018) |
| May 22 | 90.0°F (2021) | 37.0°F (1997) | 1.32 in (2013) |
| May 23 | 89.1°F (2007) | 39.0°F (2006) | 1.44 in (2020) |
| May 24 | 91.9°F (2021) | 39.9°F (2013) | 0.49 in (2019) |
| May 25 | 89.1°F (2018) | 41.0°F (2002) | 0.90 in (2016) |
| May 26 | 91.0°F (2018) | 39.9°F (2001) | 1.22 in (2009) |
| May 27 | 97.0°F (2018) | 39.0°F (2011) | 0.40 in (2000) |
| May 28 | 95.0°F (2018) | 42.1°F (2008) | 0.95 in (2003) |
| May 29 | 90.0°F (2006) | 39.0°F (2008) | 1.42 in (2011) |
| May 30 | 91.0°F (2010) | 39.0°F (2021) | 0.36 in (2015) |
| May 31 | 90.0°F (2018) | 39.9°F (2003) | 0.87 in (2012) |