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Precipitation patterns have also fluctuated, with May 30, 2015 recording the highest precipitation in the past 15 years at 26 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 May 30 reaching 43 mph (2013) and the highest sustained wind speed recorded at 19 mph (2015).
These historical trends suggest that the weather on May 30 in Romeoville has been quite unpredictable over the years.
Historical May 30 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 | 86°F | 64°F | 0 mm | 0 mm | 0 mm | 17 mph | 8 mph |
| 2011 | 88°F | 66°F | 0 mm | 0 mm | 0 mm | 31 mph | 15 mph |
| 2012 | 69°F | 57°F | 0 mm | 0 mm | 0 mm | 24 mph | 11 mph |
| 2013 | 82°F | 69°F | 4.3 mm | 4.3 mm | 0 mm | 43 mph | 19 mph |
| 2014 | 80°F | 55°F | 0 mm | 0 mm | 0 mm | 22 mph | 10 mph |
| 2015 | 70°F | 46°F | 26 mm | 26 mm | 0 mm | 36 mph | 19 mph |
| 2016 | 83°F | 61°F | 0 mm | 0 mm | 0 mm | 22 mph | 8 mph |
| 2017 | 69°F | 53°F | 0.2 mm | 0.2 mm | 0 mm | 35 mph | 16 mph |
| 2018 | 80°F | 69°F | 25.5 mm | 25.5 mm | 0 mm | 21 mph | 9 mph |
| 2019 | 75°F | 61°F | 14.1 mm | 14.1 mm | 0 mm | 21 mph | 9 mph |
| 2020 | 69°F | 51°F | 0 mm | 0 mm | 0 mm | 22 mph | 11 mph |
| 2021 | 69°F | 41°F | 0 mm | 0 mm | 0 mm | 13 mph | 7 mph |
| 2022 | 84°F | 68°F | 0 mm | 0 mm | 0 mm | 34 mph | 18 mph |
| 2023 | 87°F | 59°F | 1.2 mm | 1.2 mm | 0 mm | 21 mph | 11 mph |
| 2024 | 69°F | 46°F | 0 mm | 0 mm | 0 mm | 19 mph | 8 mph |
