July weather in Decatur, IN
The average temperature in Decatur in July is 73.2°F (62.7°F–83.8°F). Average precipitation: 4.26 inches.
July is a summer month in Decatur, and is warmer than the annual average of 50.7°F. Daily temperatures swing about 21.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 39m. For travel, July is a comfortable month to visit.
Avg High
83.8°F
Avg Low
62.7°F
Precipitation
4.26 in
Daylight
14h 39m
July records in Decatur
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 93.0°F (2022) | 48.9°F (2008) | 1.71 in (1997) |
| July 2 | 93.0°F (2018) | 48.9°F (2007) | 1.53 in (1933) |
| July 3 | 95.0°F (2011) | 48.9°F (2007) | 2.52 in (1993) |
| July 4 | 95.0°F (2012) | 46.9°F (1972) | 2.35 in (1998) |
| July 5 | 98.1°F (2012) | 51.1°F (2014) | 2.20 in (2003) |
| July 6 | 99.0°F (2012) | 42.1°F (1972) | 1.63 in (2022) |
| July 7 | 100.9°F (2012) | 48.0°F (1972) | 3.96 in (1943) |
| July 8 | 100.9°F (2012) | 50.0°F (2018) | 1.51 in (1964) |
| July 9 | 93.9°F (2007) | 50.0°F (2018) | 1.95 in (1979) |
| July 10 | 98.1°F (1973) | 55.0°F (2022) | 2.15 in (1971) |
| July 11 | 96.1°F (1976) | 54.0°F (2014) | 1.84 in (2017) |
| July 12 | 97.0°F (1976) | 50.0°F (1973) | 1.66 in (1987) |
| July 13 | 93.0°F (1972) | 46.0°F (1976) | 3.12 in (1992) |
| July 14 | 93.9°F (1973) | 48.9°F (2009) | 1.55 in (1972) |
| July 15 | 95.0°F (1976) | 51.1°F (2009) | 2.10 in (1955) |
| July 16 | 100.9°F (1980) | 52.0°F (2014) | 2.19 in (1986) |
| July 17 | 98.1°F (2008) | 48.9°F (1976) | 4.51 in (1943) |
| July 18 | 98.1°F (2012) | 50.0°F (1973) | 2.62 in (1996) |
| July 19 | 93.9°F (2011) | 51.1°F (2009) | 2.93 in (2015) |
| July 20 | 96.1°F (1973) | 53.1°F (2009) | 2.11 in (1969) |
| July 21 | 100.0°F (1980) | 52.0°F (2007) | 2.91 in (2023) |
| July 22 | 100.0°F (2011) | 48.9°F (2007) | 3.09 in (2004) |
| July 23 | 97.0°F (2011) | 52.0°F (2007) | 1.94 in (1952) |
| July 24 | 96.1°F (2011) | 52.0°F (2013) | 1.33 in (1997) |
| July 25 | 93.9°F (2010) | 50.0°F (2013) | 1.55 in (1984) |
| July 26 | 93.9°F (1976) | 53.1°F (2013) | 4.20 in (1956) |
| July 27 | 93.9°F (1976) | 52.0°F (2024) | 1.57 in (2005) |
| July 28 | 93.0°F (1976) | 53.1°F (2013) | 1.55 in (2006) |
| July 29 | 95.0°F (2011) | 50.0°F (2014) | 1.49 in (1961) |
| July 30 | 91.0°F (2025) | 50.0°F (2014) | 2.07 in (1939) |
| July 31 | 93.0°F (2011) | 52.0°F (2013) | 1.90 in (1949) |