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Precipitation patterns have also fluctuated, with May 20, 2022 recording the highest precipitation in the past 15 years at 18.7 mm, all of which came from rainfall. Interestingly, six 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 20 reaching 46 mph (2022) and the highest sustained wind speed recorded at 23 mph (2022).
These historical trends suggest that the weather on May 20 in Lemont has been quite unpredictable over the years.
Historical May 20 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 | 72°F | 49°F | 2.8 mm | 2.8 mm | 0 mm | 27 mph | 12 mph |
| 2011 | 72°F | 52°F | 0 mm | 0 mm | 0 mm | 18 mph | 10 mph |
| 2012 | 88°F | 66°F | 4.1 mm | 4.1 mm | 0 mm | 32 mph | 14 mph |
| 2013 | 83°F | 68°F | 1.6 mm | 1.6 mm | 0 mm | 35 mph | 17 mph |
| 2014 | 81°F | 60°F | 7.3 mm | 7.3 mm | 0 mm | 27 mph | 14 mph |
| 2015 | 48°F | 40°F | 1.7 mm | 1.7 mm | 0 mm | 22 mph | 11 mph |
| 2016 | 66°F | 49°F | 0 mm | 0 mm | 0 mm | 20 mph | 9 mph |
| 2017 | 71°F | 49°F | 10.5 mm | 10.5 mm | 0 mm | 30 mph | 14 mph |
| 2018 | 59°F | 46°F | 2.4 mm | 2.4 mm | 0 mm | 29 mph | 14 mph |
| 2019 | 57°F | 45°F | 0 mm | 0 mm | 0 mm | 27 mph | 13 mph |
| 2020 | 65°F | 52°F | 0 mm | 0 mm | 0 mm | 27 mph | 13 mph |
| 2021 | 82°F | 66°F | 1 mm | 1 mm | 0 mm | 31 mph | 14 mph |
| 2022 | 85°F | 63°F | 18.7 mm | 18.7 mm | 0 mm | 46 mph | 23 mph |
| 2023 | 69°F | 47°F | 0 mm | 0 mm | 0 mm | 24 mph | 11 mph |
| 2024 | 81°F | 58°F | 0 mm | 0 mm | 0 mm | 38 mph | 16 mph |
