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Precipitation patterns have also fluctuated, with March 15, 2021 recording the highest precipitation in the past 15 years at 10.3 mm, consisting of 2.1 mm of rainfall and 57.4 mm of snowfall. For reference, 7 mm of snowfall is generally equivalent to 1 mm of rain or total precipitation. 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 March 15 reaching 39 mph (2019) and the highest sustained wind speed recorded at 19 mph (2019).
These historical trends suggest that the weather on March 15 in Coal City has been quite unpredictable over the years.
Historical March 15 Weather in Coal City (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 | 50°F | 35°F | 0 mm | 0 mm | 0 mm | 25 mph | 11 mph |
| 2011 | 40°F | 32°F | 0.9 mm | 0.9 mm | 0 mm | 18 mph | 9 mph |
| 2012 | 77°F | 59°F | 3.4 mm | 3.4 mm | 0 mm | 23 mph | 11 mph |
| 2013 | 48°F | 27°F | 0.8 mm | 0.8 mm | 0 mm | 18 mph | 9 mph |
| 2014 | 46°F | 28°F | 0 mm | 0 mm | 0 mm | 27 mph | 15 mph |
| 2015 | 63°F | 30°F | 0 mm | 0 mm | 0 mm | 27 mph | 16 mph |
| 2016 | 70°F | 45°F | 7 mm | 7 mm | 0 mm | 32 mph | 16 mph |
| 2017 | 32°F | 13°F | 0 mm | 0 mm | 0 mm | 25 mph | 11 mph |
| 2018 | 51°F | 26°F | 0 mm | 0 mm | 0 mm | 24 mph | 11 mph |
| 2019 | 43°F | 33°F | 0.7 mm | 0.5 mm | 1.4 mm | 39 mph | 19 mph |
| 2020 | 42°F | 30°F | 0 mm | 0 mm | 0 mm | 20 mph | 9 mph |
| 2021 | 42°F | 31°F | 10.3 mm | 2.1 mm | 57.4 mm | 37 mph | 19 mph |
| 2022 | 59°F | 33°F | 0 mm | 0 mm | 0 mm | 13 mph | 6 mph |
| 2023 | 51°F | 24°F | 0 mm | 0 mm | 0 mm | 27 mph | 14 mph |
| 2024 | 56°F | 36°F | 0 mm | 0 mm | 0 mm | 19 mph | 10 mph |
