July weather in Sullivan, IL
The average temperature in Sullivan in July is 75.6°F (65.2°F–86.0°F). Average precipitation: 4.35 inches.
July is a summer month in Sullivan, and is warmer than the annual average of 53°F. Daily temperatures swing about 20.8°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 14h 32m. For travel, July is a comfortable month to visit.
Avg High
86.0°F
Avg Low
65.2°F
Precipitation
4.35 in
Daylight
14h 32m
July records in Sullivan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 95.0°F (2019) | 48.0°F (2001) | 2.75 in (1993) |
| July 2 | 100.0°F (2012) | 48.0°F (2001) | 1.50 in (2018) |
| July 3 | 99.0°F (2012) | 53.1°F (2005) | 2.96 in (1950) |
| July 4 | 93.9°F (2002) | 57.0°F (2013) | 2.18 in (2000) |
| July 5 | 97.0°F (2012) | 53.1°F (2001) | 2.20 in (1992) |
| July 6 | 99.0°F (2012) | 52.0°F (2006) | 1.39 in (2017) |
| July 7 | 100.0°F (2012) | 53.1°F (2006) | 0.64 in (2008) |
| July 8 | 102.9°F (2012) | 55.9°F (2006) | 1.99 in (2022) |
| July 9 | 95.0°F (2002) | 55.9°F (2018) | 2.67 in (2003) |
| July 10 | 93.0°F (2020) | 55.0°F (2014) | 0.76 in (2000) |
| July 11 | 95.0°F (2019) | 55.0°F (2014) | 1.14 in (2013) |
| July 12 | 93.0°F (2011) | 53.1°F (2013) | 1.90 in (2008) |
| July 13 | 91.9°F (2004) | 51.1°F (2001) | 1.57 in (2006) |
| July 14 | 91.0°F (2015) | 55.9°F (2001) | 0.87 in (1992) |
| July 15 | 91.9°F (2019) | 53.1°F (2014) | 0.89 in (2009) |
| July 16 | 91.9°F (2010) | 53.1°F (2014) | 2.91 in (2024) |
| July 17 | 93.9°F (2012) | 52.0°F (2014) | 0.99 in (1951) |
| July 18 | 96.1°F (2012) | 55.9°F (2014) | 1.52 in (1994) |
| July 19 | 99.0°F (2012) | 53.1°F (2014) | 1.60 in (1946) |
| July 20 | 96.1°F (2012) | 52.0°F (2007) | 4.78 in (2010) |
| July 21 | 96.1°F (2002) | 52.0°F (2007) | 0.63 in (2013) |
| July 22 | 98.1°F (2011) | 54.0°F (2007) | 1.50 in (1995) |
| July 23 | 95.0°F (2011) | 54.0°F (2003) | 1.08 in (1949) |
| July 24 | 100.0°F (2012) | 52.0°F (2014) | 0.16 in (2004) |
| July 25 | 99.0°F (2012) | 52.0°F (2013) | 1.96 in (2016) |
| July 26 | 100.9°F (2012) | 50.0°F (2004) | 2.00 in (1992) |
| July 27 | 93.9°F (2005) | 52.0°F (2004) | 2.00 in (1992) |
| July 28 | 96.1°F (2023) | 54.0°F (2005) | 2.14 in (2001) |
| July 29 | 97.0°F (2023) | 51.1°F (2013) | 0.78 in (2015) |
| July 30 | 91.0°F (2001) | 51.1°F (2013) | 3.54 in (2018) |
| July 31 | 93.0°F (2006) | 41.0°F (2004) | 3.04 in (2020) |