July weather in McLean, IL
The average temperature in McLean in July is 73.8°F (63.4°F–84.2°F). Average precipitation: 4.05 inches.
July is a summer month in McLean, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 20.8°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 14h 36m. For travel, July is a comfortable month to visit.
Avg High
84.2°F
Avg Low
63.4°F
Precipitation
4.05 in
Daylight
14h 36m
July records in McLean
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 93.0°F (2005) | 45.0°F (2001) | 1.47 in (2014) |
| July 2 | 93.9°F (2003) | 46.0°F (2001) | 0.60 in (2004) |
| July 3 | 97.0°F (2006) | 52.0°F (2005) | 0.90 in (2001) |
| July 4 | 97.0°F (2003) | 54.0°F (2008) | 1.02 in (2006) |
| July 5 | 98.1°F (2012) | 52.0°F (2001) | 0.86 in (2009) |
| July 6 | 100.0°F (2012) | 50.0°F (2001) | 0.53 in (2014) |
| July 7 | 102.0°F (2012) | 55.0°F (2004) | 0.51 in (2015) |
| July 8 | 102.0°F (2012) | 55.0°F (2006) | 2.00 in (2003) |
| July 9 | 93.9°F (2001) | 54.0°F (2015) | 4.60 in (2003) |
| July 10 | 95.0°F (2001) | 59.0°F (2014) | 0.43 in (2004) |
| July 11 | 93.0°F (2005) | 59.0°F (2003) | 0.89 in (2006) |
| July 12 | 93.0°F (2011) | 53.1°F (2002) | 0.96 in (2006) |
| July 13 | 93.0°F (2004) | 53.1°F (2002) | 1.69 in (2005) |
| July 14 | 91.9°F (2006) | 54.0°F (2002) | 0.06 in (2010) |
| July 15 | 93.0°F (2002) | 53.1°F (2014) | 0.39 in (2009) |
| July 16 | 98.1°F (2006) | 52.0°F (2014) | 0.05 in (2013) |
| July 17 | 99.0°F (2006) | 52.0°F (2014) | 0.87 in (2015) |
| July 18 | 98.1°F (2012) | 54.0°F (2003) | 0.73 in (2002) |
| July 19 | 100.9°F (2012) | 54.0°F (2000) | 0.20 in (2011) |
| July 20 | 97.0°F (2002) | 53.1°F (2007) | 0.92 in (2010) |
| July 21 | 100.9°F (2002) | 51.1°F (2007) | 0.82 in (2001) |
| July 22 | 98.1°F (2001) | 52.0°F (2007) | 0.51 in (2010) |
| July 23 | 97.0°F (2001) | 50.0°F (2000) | 0.17 in (2001) |
| July 24 | 100.9°F (2012) | 48.0°F (2000) | 0.00 in (2000) |
| July 25 | 100.9°F (2005) | 51.1°F (2014) | 0.90 in (2009) |
| July 26 | 100.9°F (2012) | 51.1°F (2004) | 1.98 in (2002) |
| July 27 | 93.0°F (2002) | 51.1°F (2004) | 0.90 in (2006) |
| July 28 | 93.0°F (2000) | 48.0°F (2013) | 2.00 in (2000) |
| July 29 | 95.0°F (2006) | 48.0°F (2013) | 1.62 in (2015) |
| July 30 | 98.1°F (2006) | 52.0°F (2013) | 0.86 in (2008) |
| July 31 | 98.1°F (2006) | 55.0°F (2014) | 0.52 in (2013) |