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Precipitation patterns have also fluctuated, with Sept. 12, 2020 recording the highest precipitation in the past 15 years at 17.2 mm, all of which came from rainfall. Interestingly, eight 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 Sept. 12 reaching 33 mph (2013) and the highest sustained wind speed recorded at 18 mph (2022).
These historical trends suggest that the weather on Sept. 12 in Bourbonnais has been quite unpredictable over the years.
Historical Sept. 12 Weather in Bourbonnais (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 | 80°F | 56°F | 0 mm | 0 mm | 0 mm | 21 mph | 13 mph |
| 2011 | 86°F | 64°F | 0 mm | 0 mm | 0 mm | 25 mph | 14 mph |
| 2012 | 83°F | 60°F | 0 mm | 0 mm | 0 mm | 24 mph | 13 mph |
| 2013 | 83°F | 62°F | 1 mm | 1 mm | 0 mm | 33 mph | 17 mph |
| 2014 | 58°F | 45°F | 2.9 mm | 2.9 mm | 0 mm | 23 mph | 12 mph |
| 2015 | 63°F | 51°F | 0.4 mm | 0.4 mm | 0 mm | 25 mph | 11 mph |
| 2016 | 77°F | 56°F | 0 mm | 0 mm | 0 mm | 21 mph | 11 mph |
| 2017 | 78°F | 55°F | 0 mm | 0 mm | 0 mm | 24 mph | 12 mph |
| 2018 | 79°F | 57°F | 0 mm | 0 mm | 0 mm | 15 mph | 9 mph |
| 2019 | 88°F | 69°F | 0.9 mm | 0.9 mm | 0 mm | 19 mph | 11 mph |
| 2020 | 73°F | 65°F | 17.2 mm | 17.2 mm | 0 mm | 23 mph | 12 mph |
| 2021 | 87°F | 71°F | 0 mm | 0 mm | 0 mm | 30 mph | 16 mph |
| 2022 | 62°F | 54°F | 10.4 mm | 10.4 mm | 0 mm | 30 mph | 18 mph |
| 2023 | 70°F | 54°F | 0.3 mm | 0.3 mm | 0 mm | 20 mph | 11 mph |
| 2024 | 86°F | 59°F | 0 mm | 0 mm | 0 mm | 21 mph | 11 mph |
