July weather in New Boston, IL
The average temperature in New Boston in July is 75.7°F (65.3°F–86.0°F). Average precipitation: 3.52 inches.
July is a summer month in New Boston, and is warmer than the annual average of 51.2°F. Daily temperatures swing about 20.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 14h 41m. For travel, July is a comfortable month to visit.
Avg High
86.0°F
Avg Low
65.3°F
Precipitation
3.52 in
Daylight
14h 41m
July records in New Boston
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 99.0°F (1938) | 54.0°F (2024) | 2.95 in (2014) |
| July 2 | 95.0°F (2012) | 54.0°F (1940) | 1.00 in (2020) |
| July 3 | 97.0°F (2012) | 53.1°F (1940) | 1.60 in (2024) |
| July 4 | 97.0°F (2012) | 53.1°F (1940) | 2.08 in (1950) |
| July 5 | 97.0°F (2002) | 55.0°F (1997) | 4.47 in (1948) |
| July 6 | 100.0°F (1939) | 55.9°F (1997) | 1.50 in (1966) |
| July 7 | 102.0°F (1939) | 53.1°F (1997) | 2.65 in (2015) |
| July 8 | 100.0°F (2012) | 50.0°F (1945) | 2.75 in (1992) |
| July 9 | 96.1°F (2002) | 55.9°F (1947) | 3.61 in (1977) |
| July 10 | 97.0°F (2018) | 53.1°F (1997) | 1.08 in (2017) |
| July 11 | 100.9°F (1938) | 48.9°F (1945) | 2.95 in (2025) |
| July 12 | 102.0°F (1938) | 52.0°F (1945) | 3.18 in (2025) |
| July 13 | 97.0°F (1938) | 53.1°F (1940) | 1.05 in (2023) |
| July 14 | 97.0°F (1939) | 54.0°F (2001) | 2.60 in (1958) |
| July 15 | 95.0°F (2010) | 52.0°F (1945) | 1.67 in (2021) |
| July 16 | 97.0°F (2012) | 55.0°F (2014) | 1.25 in (2020) |
| July 17 | 98.1°F (2006) | 52.0°F (1945) | 2.75 in (2015) |
| July 18 | 100.0°F (2006) | 54.0°F (1945) | 2.61 in (1982) |
| July 19 | 100.9°F (2012) | 55.9°F (2023) | 2.33 in (2002) |
| July 20 | 97.0°F (2011) | 52.0°F (2009) | 2.40 in (2025) |
| July 21 | 98.1°F (2011) | 51.1°F (1944) | 1.97 in (1961) |
| July 22 | 98.1°F (1945) | 52.0°F (1944) | 1.92 in (1951) |
| July 23 | 98.1°F (1999) | 48.9°F (1947) | 1.43 in (1957) |
| July 24 | 104.0°F (2012) | 54.0°F (1947) | 1.55 in (1944) |
| July 25 | 102.0°F (1940) | 55.0°F (1946) | 1.45 in (1992) |
| July 26 | 100.9°F (2012) | 55.9°F (2013) | 1.15 in (1992) |
| July 27 | 97.0°F (1939) | 54.0°F (2004) | 1.95 in (2002) |
| July 28 | 105.1°F (2011) | 54.0°F (2004) | 1.13 in (1981) |
| July 29 | 100.0°F (1941) | 51.1°F (2013) | 1.76 in (1949) |
| July 30 | 100.9°F (1999) | 51.1°F (2013) | 1.96 in (1949) |
| July 31 | 99.0°F (1999) | 53.1°F (1997) | 2.65 in (1958) |