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Precipitation patterns have also fluctuated, with April 18, 2013 recording the highest precipitation in the past 15 years at 50.6 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 April 18 reaching 49 mph (2013) and the highest sustained wind speed recorded at 19 mph (2013).
These historical trends suggest that the weather on April 18 in Lemont has been quite unpredictable over the years.
Historical April 18 Weather in Lemont (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 | 54°F | 36°F | 0 mm | 0 mm | 0 mm | 21 mph | 9 mph |
| 2011 | 44°F | 34°F | 8.7 mm | 4.3 mm | 30.8 mm | 30 mph | 14 mph |
| 2012 | 70°F | 42°F | 0.3 mm | 0.3 mm | 0 mm | 33 mph | 17 mph |
| 2013 | 66°F | 40°F | 50.6 mm | 50.6 mm | 0 mm | 49 mph | 19 mph |
| 2014 | 54°F | 36°F | 0 mm | 0 mm | 0 mm | 22 mph | 10 mph |
| 2015 | 60°F | 48°F | 0 mm | 0 mm | 0 mm | 28 mph | 11 mph |
| 2016 | 79°F | 49°F | 0 mm | 0 mm | 0 mm | 13 mph | 6 mph |
| 2017 | 72°F | 41°F | 0 mm | 0 mm | 0 mm | 32 mph | 15 mph |
| 2018 | 37°F | 28°F | 7 mm | 2.1 mm | 34.3 mm | 31 mph | 15 mph |
| 2019 | 62°F | 44°F | 9 mm | 9 mm | 0 mm | 25 mph | 12 mph |
| 2020 | 55°F | 29°F | 0 mm | 0 mm | 0 mm | 37 mph | 18 mph |
| 2021 | 60°F | 34°F | 0.1 mm | 0.1 mm | 0 mm | 23 mph | 11 mph |
| 2022 | 43°F | 33°F | 5.7 mm | 1.8 mm | 27.3 mm | 37 mph | 19 mph |
| 2023 | 55°F | 30°F | 0 mm | 0 mm | 0 mm | 19 mph | 9 mph |
| 2024 | 59°F | 43°F | 7.5 mm | 7.5 mm | 0 mm | 20 mph | 10 mph |
