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Precipitation patterns have also fluctuated, with March 31, 2016 recording the highest precipitation in the past 15 years at 24.5 mm, all of which came from rainfall. Interestingly, seven 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 March 31 reaching 48 mph (2018) and the highest sustained wind speed recorded at 22 mph (2018).
These historical trends suggest that the weather on March 31 in Romeoville has been quite unpredictable over the years.
Historical March 31 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 | 74°F | 50°F | 0 mm | 0 mm | 0 mm | 32 mph | 16 mph |
| 2011 | 47°F | 25°F | 0 mm | 0 mm | 0 mm | 16 mph | 7 mph |
| 2012 | 55°F | 40°F | 0 mm | 0 mm | 0 mm | 20 mph | 9 mph |
| 2013 | 58°F | 40°F | 0.3 mm | 0.3 mm | 0 mm | 35 mph | 17 mph |
| 2014 | 66°F | 39°F | 0.9 mm | 0.9 mm | 0 mm | 42 mph | 20 mph |
| 2015 | 56°F | 39°F | 0 mm | 0 mm | 0 mm | 32 mph | 18 mph |
| 2016 | 61°F | 46°F | 24.5 mm | 24.5 mm | 0 mm | 46 mph | 18 mph |
| 2017 | 42°F | 36°F | 3.6 mm | 3.6 mm | 0 mm | 26 mph | 13 mph |
| 2018 | 57°F | 34°F | 1.9 mm | 1.9 mm | 0 mm | 48 mph | 22 mph |
| 2019 | 37°F | 21°F | 0 mm | 0 mm | 0 mm | 27 mph | 13 mph |
| 2020 | 42°F | 35°F | 0 mm | 0 mm | 0 mm | 21 mph | 10 mph |
| 2021 | 44°F | 33°F | 0 mm | 0 mm | 0 mm | 31 mph | 15 mph |
| 2022 | 46°F | 33°F | 13.7 mm | 10.8 mm | 20.3 mm | 31 mph | 16 mph |
| 2023 | 69°F | 49°F | 19.6 mm | 19.6 mm | 0 mm | 43 mph | 21 mph |
| 2024 | 55°F | 34°F | 18.5 mm | 18.5 mm | 0 mm | 25 mph | 13 mph |
