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Precipitation patterns have also fluctuated, with Aug. 31, 2013 recording the highest precipitation in the past 15 years at 5.4 mm, all of which came from rainfall. Interestingly, five 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 Aug. 31 reaching 30 mph (2017) and the highest sustained wind speed recorded at 16 mph (2017).
These historical trends suggest that the weather on Aug. 31 in Bourbonnais has been quite unpredictable over the years.
Historical Aug. 31 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 | 88°F | 74°F | 0 mm | 0 mm | 0 mm | 28 mph | 13 mph |
| 2011 | 93°F | 63°F | 3.9 mm | 3.9 mm | 0 mm | 24 mph | 11 mph |
| 2012 | 91°F | 70°F | 0 mm | 0 mm | 0 mm | 21 mph | 10 mph |
| 2013 | 83°F | 71°F | 5.4 mm | 5.4 mm | 0 mm | 22 mph | 9 mph |
| 2014 | 84°F | 69°F | 0.8 mm | 0.8 mm | 0 mm | 16 mph | 10 mph |
| 2015 | 86°F | 62°F | 0 mm | 0 mm | 0 mm | 13 mph | 6 mph |
| 2016 | 76°F | 63°F | 0.6 mm | 0.6 mm | 0 mm | 24 mph | 13 mph |
| 2017 | 75°F | 63°F | 0.3 mm | 0.3 mm | 0 mm | 30 mph | 16 mph |
| 2018 | 85°F | 60°F | 3.6 mm | 3.6 mm | 0 mm | 22 mph | 12 mph |
| 2019 | 73°F | 56°F | 0.4 mm | 0.4 mm | 0 mm | 20 mph | 10 mph |
| 2020 | 85°F | 63°F | 1.8 mm | 1.8 mm | 0 mm | 25 mph | 12 mph |
| 2021 | 81°F | 63°F | 0.1 mm | 0.1 mm | 0 mm | 21 mph | 11 mph |
| 2022 | 84°F | 60°F | 0 mm | 0 mm | 0 mm | 21 mph | 11 mph |
| 2023 | 75°F | 51°F | 0 mm | 0 mm | 0 mm | 15 mph | 6 mph |
| 2024 | 82°F | 64°F | 0.9 mm | 0.9 mm | 0 mm | 12 mph | 7 mph |
