July weather in Marengo, IL
The average temperature in Marengo in July is 72.6°F (61.7°F–83.5°F). Average precipitation: 4.05 inches.
July is a summer month in Marengo, and is warmer than the annual average of 48.2°F. Daily temperatures swing about 21.8°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 14h 48m. For travel, July is a comfortable month to visit.
Avg High
83.5°F
Avg Low
61.7°F
Precipitation
4.05 in
Daylight
14h 48m
July records in Marengo
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 100.0°F (1963) | 42.1°F (1965) | 1.13 in (2014) |
| July 2 | 98.1°F (1963) | 45.0°F (1924) | 4.07 in (1978) |
| July 3 | 100.0°F (1911) | 46.0°F (1907) | 1.52 in (1954) |
| July 4 | 99.0°F (1911) | 41.0°F (1963) | 1.68 in (1973) |
| July 5 | 102.0°F (2012) | 39.0°F (1972) | 1.12 in (2003) |
| July 6 | 100.0°F (2012) | 41.0°F (1965) | 1.60 in (1943) |
| July 7 | 105.1°F (1936) | 43.0°F (1983) | 1.96 in (1954) |
| July 8 | 105.1°F (1936) | 45.0°F (1963) | 3.33 in (1951) |
| July 9 | 102.0°F (1936) | 45.0°F (1895) | 2.05 in (2007) |
| July 10 | 106.0°F (1936) | 45.0°F (1963) | 2.80 in (1922) |
| July 11 | 108.0°F (1936) | 42.1°F (1945) | 1.78 in (1984) |
| July 12 | 105.1°F (1936) | 46.0°F (1918) | 1.28 in (1922) |
| July 13 | 106.0°F (1936) | 46.0°F (1940) | 2.10 in (1957) |
| July 14 | 109.0°F (1936) | 43.0°F (1950) | 2.55 in (1913) |
| July 15 | 100.0°F (1901) | 46.0°F (1930) | 2.65 in (1899) |
| July 16 | 104.0°F (1988) | 39.9°F (1945) | 1.61 in (1943) |
| July 17 | 99.0°F (1936) | 44.1°F (1940) | 3.21 in (2015) |
| July 18 | 102.9°F (1946) | 45.0°F (1924) | 3.24 in (1952) |
| July 19 | 100.0°F (1930) | 46.0°F (1929) | 3.10 in (1963) |
| July 20 | 102.9°F (1930) | 44.1°F (1929) | 2.31 in (2017) |
| July 21 | 107.1°F (1901) | 41.0°F (1966) | 2.20 in (1976) |
| July 22 | 105.1°F (1934) | 43.0°F (1947) | 3.30 in (1982) |
| July 23 | 106.0°F (1934) | 43.0°F (1947) | 3.37 in (2011) |
| July 24 | 106.0°F (1934) | 48.9°F (1905) | 3.63 in (2016) |
| July 25 | 104.0°F (1940) | 46.0°F (1911) | 1.11 in (1929) |
| July 26 | 104.0°F (1936) | 45.0°F (1911) | 1.08 in (1980) |
| July 27 | 100.9°F (1916) | 46.0°F (1937) | 2.05 in (1949) |
| July 28 | 102.0°F (1916) | 48.0°F (1925) | 1.50 in (1967) |
| July 29 | 102.0°F (1916) | 46.0°F (1971) | 1.71 in (1957) |
| July 30 | 100.9°F (1919) | 46.0°F (1971) | 1.38 in (1989) |
| July 31 | 96.1°F (1917) | 44.1°F (1918) | 2.47 in (1919) |