July weather in Blue Island, IL
The average temperature in Blue Island in July is 76.7°F (68.1°F–85.2°F). Average precipitation: 4.02 inches.
July is a summer month in Blue Island, and is warmer than the annual average of 52.4°F. Daily temperatures swing about 17.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 44m. For travel, July is a comfortable month to visit.
Avg High
85.2°F
Avg Low
68.1°F
Precipitation
4.02 in
Daylight
14h 44m
July records in Blue Island
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 102.9°F (1956) | 48.9°F (1982) | 1.23 in (1983) |
| July 2 | 99.0°F (1970) | 48.0°F (1930) | 4.01 in (2023) |
| July 3 | 102.0°F (1949) | 50.0°F (1930) | 1.38 in (1942) |
| July 4 | 102.0°F (2012) | 48.9°F (1940) | 0.94 in (1985) |
| July 5 | 102.9°F (2012) | 46.0°F (1972) | 1.92 in (2023) |
| July 6 | 105.1°F (2012) | 48.9°F (1983) | 3.93 in (1943) |
| July 7 | 98.1°F (1988) | 48.0°F (1983) | 0.95 in (1954) |
| July 8 | 99.0°F (1955) | 48.9°F (1934) | 2.41 in (1951) |
| July 9 | 98.1°F (1974) | 55.0°F (1952) | 2.43 in (1946) |
| July 10 | 100.9°F (1989) | 54.0°F (1945) | 0.98 in (2000) |
| July 11 | 95.0°F (1972) | 51.1°F (1978) | 1.15 in (2023) |
| July 12 | 98.1°F (1995) | 55.0°F (1945) | 6.16 in (1957) |
| July 13 | 106.0°F (1995) | 52.0°F (1975) | 1.49 in (1963) |
| July 14 | 102.0°F (1995) | 53.1°F (1950) | 1.86 in (2024) |
| July 15 | 102.9°F (1988) | 52.0°F (1945) | 1.36 in (2003) |
| July 16 | 99.0°F (1988) | 48.9°F (1945) | 2.48 in (1950) |
| July 17 | 100.0°F (1942) | 52.0°F (1976) | 5.72 in (1996) |
| July 18 | 100.0°F (1946) | 53.1°F (1979) | 2.36 in (1996) |
| July 19 | 99.0°F (1991) | 55.0°F (1947) | 3.69 in (1990) |
| July 20 | 100.0°F (2011) | 53.1°F (1970) | 3.03 in (1978) |
| July 21 | 100.9°F (2011) | 51.1°F (1970) | 2.94 in (1980) |
| July 22 | 102.0°F (1991) | 48.9°F (1947) | 1.82 in (1962) |
| July 23 | 98.1°F (2012) | 51.1°F (1947) | 2.31 in (2011) |
| July 24 | 104.0°F (2005) | 55.9°F (2000) | 4.77 in (2010) |
| July 25 | 100.9°F (2012) | 57.0°F (2013) | 3.15 in (2025) |
| July 26 | 99.0°F (1955) | 53.1°F (1962) | 1.55 in (1969) |
| July 27 | 100.0°F (1955) | 54.0°F (1971) | 4.71 in (1966) |
| July 28 | 100.0°F (1983) | 53.1°F (1981) | 1.36 in (2023) |
| July 29 | 99.0°F (1999) | 50.0°F (1981) | 1.47 in (1953) |
| July 30 | 104.0°F (1999) | 54.0°F (1981) | 2.43 in (1979) |
| July 31 | 99.0°F (1945) | 53.1°F (1971) | 1.20 in (1986) |