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Precipitation patterns have also fluctuated, with May 9, 2013 recording the highest precipitation in the past 15 years at 25.5 mm, all of which came from rainfall. Interestingly, four 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 May 9 reaching 38 mph (2022) and the highest sustained wind speed recorded at 19 mph (2022).
These historical trends suggest that the weather on May 9 in Romeoville has been quite unpredictable over the years.
Historical May 9 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 | 57°F | 37°F | 0 mm | 0 mm | 0 mm | 14 mph | 7 mph |
| 2011 | 75°F | 53°F | 3.6 mm | 3.6 mm | 0 mm | 31 mph | 16 mph |
| 2012 | 62°F | 45°F | 3.7 mm | 3.7 mm | 0 mm | 26 mph | 9 mph |
| 2013 | 70°F | 54°F | 25.5 mm | 25.5 mm | 0 mm | 23 mph | 7 mph |
| 2014 | 71°F | 55°F | 19.7 mm | 19.7 mm | 0 mm | 36 mph | 17 mph |
| 2015 | 66°F | 48°F | 8.3 mm | 8.3 mm | 0 mm | 23 mph | 10 mph |
| 2016 | 59°F | 51°F | 7.3 mm | 7.3 mm | 0 mm | 28 mph | 14 mph |
| 2017 | 59°F | 42°F | 6.3 mm | 6.3 mm | 0 mm | 28 mph | 10 mph |
| 2018 | 76°F | 57°F | 2.8 mm | 2.8 mm | 0 mm | 36 mph | 18 mph |
| 2019 | 67°F | 47°F | 16.2 mm | 16.2 mm | 0 mm | 32 mph | 15 mph |
| 2020 | 54°F | 27°F | 0 mm | 0 mm | 0 mm | 25 mph | 13 mph |
| 2021 | 53°F | 37°F | 22.2 mm | 21.3 mm | 6.3 mm | 32 mph | 15 mph |
| 2022 | 76°F | 54°F | 0 mm | 0 mm | 0 mm | 38 mph | 19 mph |
| 2023 | 70°F | 46°F | 0 mm | 0 mm | 0 mm | 19 mph | 9 mph |
| 2024 | 61°F | 47°F | 6.5 mm | 6.5 mm | 0 mm | 30 mph | 15 mph |
