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Precipitation patterns have also fluctuated, with July 4, 2018 recording the highest precipitation in the past 15 years at 22.9 mm, all of which came from rainfall. Interestingly, nine years out of the last 15 years had no measurable precipitation on this date.
Wind speeds have varied as well, with the strongest gust on July 4 reaching 35 mph (2010) and the highest sustained wind speed recorded at 15 mph (2022).
These historical trends suggest that the weather on July 4 in Romeoville has been quite unpredictable over the years.
Historical July 4 Weather in Romeoville (Last 15 Years)
| Year | High Temp (°F) | Low Temp (°F) | Precipitation (mm) | Rain (mm) | Snowfall (mm) | Strongest Wind Gust (mph) | Max Wind Speed (mph) |
|---|---|---|---|---|---|---|---|
| 2010 | 87°F | 67°F | 0 mm | 0 mm | 0 mm | 35 mph | 14 mph |
| 2011 | 83°F | 67°F | 0 mm | 0 mm | 0 mm | 13 mph | 5 mph |
| 2012 | 97°F | 77°F | 0 mm | 0 mm | 0 mm | 20 mph | 10 mph |
| 2013 | 79°F | 57°F | 0 mm | 0 mm | 0 mm | 18 mph | 8 mph |
| 2014 | 76°F | 55°F | 0 mm | 0 mm | 0 mm | 17 mph | 6 mph |
| 2015 | 80°F | 59°F | 0 mm | 0 mm | 0 mm | 11 mph | 5 mph |
| 2016 | 78°F | 64°F | 0 mm | 0 mm | 0 mm | 15 mph | 6 mph |
| 2017 | 82°F | 62°F | 4 mm | 4 mm | 0 mm | 17 mph | 8 mph |
| 2018 | 87°F | 72°F | 22.9 mm | 22.9 mm | 0 mm | 18 mph | 8 mph |
| 2019 | 86°F | 68°F | 0.7 mm | 0.7 mm | 0 mm | 23 mph | 9 mph |
| 2020 | 89°F | 68°F | 0.2 mm | 0.2 mm | 0 mm | 18 mph | 9 mph |
| 2021 | 87°F | 67°F | 0 mm | 0 mm | 0 mm | 20 mph | 9 mph |
| 2022 | 88°F | 66°F | 8.7 mm | 8.7 mm | 0 mm | 28 mph | 15 mph |
| 2023 | 87°F | 64°F | 0 mm | 0 mm | 0 mm | 16 mph | 7 mph |
| 2024 | 78°F | 67°F | 1.3 mm | 1.3 mm | 0 mm | 12 mph | 5 mph |
