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Precipitation patterns have also fluctuated, with May 15, 2020 recording the highest precipitation in the past 15 years at 12.5 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 May 15 reaching 39 mph (2011) and the highest sustained wind speed recorded at 19 mph (2011).
These historical trends suggest that the weather on May 15 in Lemont has been quite unpredictable over the years.
Historical May 15 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 | 62°F | 48°F | 0 mm | 0 mm | 0 mm | 19 mph | 9 mph |
| 2011 | 48°F | 43°F | 7.2 mm | 7.2 mm | 0 mm | 39 mph | 19 mph |
| 2012 | 79°F | 55°F | 0 mm | 0 mm | 0 mm | 27 mph | 13 mph |
| 2013 | 80°F | 58°F | 0.1 mm | 0.1 mm | 0 mm | 33 mph | 17 mph |
| 2014 | 53°F | 39°F | 8.1 mm | 8.1 mm | 0 mm | 28 mph | 15 mph |
| 2015 | 75°F | 57°F | 5.5 mm | 5.5 mm | 0 mm | 24 mph | 12 mph |
| 2016 | 54°F | 40°F | 0 mm | 0 mm | 0 mm | 27 mph | 13 mph |
| 2017 | 81°F | 48°F | 0 mm | 0 mm | 0 mm | 19 mph | 9 mph |
| 2018 | 69°F | 50°F | 1 mm | 1 mm | 0 mm | 23 mph | 11 mph |
| 2019 | 74°F | 48°F | 0 mm | 0 mm | 0 mm | 17 mph | 8 mph |
| 2020 | 75°F | 54°F | 12.5 mm | 12.5 mm | 0 mm | 32 mph | 12 mph |
| 2021 | 62°F | 47°F | 2.4 mm | 2.4 mm | 0 mm | 20 mph | 10 mph |
| 2022 | 76°F | 54°F | 4.6 mm | 4.6 mm | 0 mm | 17 mph | 8 mph |
| 2023 | 66°F | 47°F | 0 mm | 0 mm | 0 mm | 20 mph | 10 mph |
| 2024 | 66°F | 50°F | 0 mm | 0 mm | 0 mm | 24 mph | 11 mph |
