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Precipitation patterns have also fluctuated, with June 30, 2017 recording the highest precipitation in the past 15 years at 13.9 mm, all of which came from rainfall. Interestingly, four 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 June 30 reaching 34 mph (2014) and the highest sustained wind speed recorded at 14 mph (2019).
These historical trends suggest that the weather on June 30 in Coal City has been quite unpredictable over the years.
Historical June 30 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 | 75°F | 56°F | 0 mm | 0 mm | 0 mm | 16 mph | 9 mph |
| 2011 | 85°F | 64°F | 0 mm | 0 mm | 0 mm | 21 mph | 12 mph |
| 2012 | 91°F | 71°F | 6.7 mm | 6.7 mm | 0 mm | 22 mph | 8 mph |
| 2013 | 75°F | 62°F | 0.6 mm | 0.6 mm | 0 mm | 30 mph | 14 mph |
| 2014 | 86°F | 72°F | 8.8 mm | 8.8 mm | 0 mm | 34 mph | 14 mph |
| 2015 | 78°F | 59°F | 0.2 mm | 0.2 mm | 0 mm | 24 mph | 11 mph |
| 2016 | 78°F | 57°F | 1.3 mm | 1.3 mm | 0 mm | 19 mph | 9 mph |
| 2017 | 79°F | 65°F | 13.9 mm | 13.9 mm | 0 mm | 22 mph | 9 mph |
| 2018 | 90°F | 78°F | 0.6 mm | 0.6 mm | 0 mm | 27 mph | 13 mph |
| 2019 | 88°F | 71°F | 7.1 mm | 7.1 mm | 0 mm | 28 mph | 14 mph |
| 2020 | 85°F | 71°F | 8.4 mm | 8.4 mm | 0 mm | 22 mph | 9 mph |
| 2021 | 79°F | 71°F | 5.1 mm | 5.1 mm | 0 mm | 17 mph | 8 mph |
| 2022 | 91°F | 70°F | 0 mm | 0 mm | 0 mm | 28 mph | 14 mph |
| 2023 | 87°F | 65°F | 10.9 mm | 10.9 mm | 0 mm | 16 mph | 8 mph |
| 2024 | 73°F | 58°F | 0 mm | 0 mm | 0 mm | 24 mph | 13 mph |
