July weather in Stonington, IL
The average temperature in Stonington in July is °F (°F–°F). Average precipitation: 3.31 inches.
July is a summer month in Stonington, and is cooler than the annual average of 0°F. Expect about 8 days with precipitation. Daylight averages about 14h 33m.
Avg High
°F
Avg Low
°F
Precipitation
3.31 in
Daylight
14h 33m
July records in Stonington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 91.0°F (2023) | 46.9°F (2024) | 1.12 in (2023) |
| July 2 | 86.0°F (2022) | 57.0°F (2024) | 1.43 in (2023) |
| July 3 | 90.0°F (2024) | 63.0°F (2022) | 1.57 in (1950) |
| July 4 | 91.0°F (2025) | 62.1°F (2021) | 0.79 in (1943) |
| July 5 | 91.9°F (2025) | 64.0°F (2021) | 0.82 in (1971) |
| July 6 | 97.0°F (2022) | 60.1°F (2024) | 1.39 in (1942) |
| July 7 | 93.0°F (2020) | 63.0°F (2024) | 1.16 in (1969) |
| July 8 | 91.0°F (2020) | 64.9°F (2024) | 3.03 in (2011) |
| July 9 | 89.1°F (2020) | 57.9°F (2021) | 3.18 in (2025) |
| July 10 | 90.0°F (2020) | 57.9°F (2023) | 3.27 in (1971) |
| July 11 | 88.0°F (2025) | 62.1°F (2023) | 0.58 in (2006) |
| July 12 | 91.9°F (2025) | 64.0°F (2024) | 1.25 in (1958) |
| July 13 | 84.9°F (2024) | 60.1°F (2020) | 1.02 in (1956) |
| July 14 | 90.0°F (2024) | 60.1°F (2020) | 1.82 in (2016) |
| July 15 | 91.0°F (2023) | 64.9°F (2020) | 2.85 in (1955) |
| July 16 | 93.0°F (2024) | 64.9°F (2023) | 1.03 in (2024) |
| July 17 | 89.1°F (2022) | 64.9°F (2023) | 1.67 in (1957) |
| July 18 | 88.0°F (2020) | 59.0°F (2024) | 1.45 in (2003) |
| July 19 | 90.0°F (2020) | 55.0°F (2024) | 0.88 in (1950) |
| July 20 | 89.1°F (2020) | 57.9°F (2024) | 2.80 in (2010) |
| July 21 | 91.0°F (2023) | 63.0°F (2024) | 1.60 in (2010) |
| July 22 | 88.0°F (2022) | 59.0°F (2024) | 0.98 in (2013) |
| July 23 | 90.0°F (2022) | 61.0°F (2023) | 0.64 in (1961) |
| July 24 | 93.0°F (2025) | 64.9°F (2020) | 2.02 in (1967) |
| July 25 | 91.9°F (2025) | 64.0°F (2022) | 2.25 in (1968) |
| July 26 | 93.0°F (2025) | 62.1°F (2022) | 2.14 in (1948) |
| July 27 | 91.0°F (2025) | 62.1°F (2024) | 0.91 in (1959) |
| July 28 | 90.0°F (2025) | 64.0°F (2020) | 1.67 in (1961) |
| July 29 | 91.9°F (2025) | 60.1°F (2022) | 5.67 in (1961) |
| July 30 | 93.0°F (2025) | 59.0°F (2022) | 1.32 in (2020) |
| July 31 | 89.1°F (2024) | 61.0°F (2022) | 4.93 in (1958) |