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Precipitation patterns have also fluctuated, with Oct. 21, 2019 recording the highest precipitation in the past 15 years at 7.9 mm, all of which came from rainfall. Interestingly, 10 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 Oct. 21 reaching 44 mph (2019) and the highest sustained wind speed recorded at 24 mph (2019).
These historical trends suggest that the weather on Oct. 21 in Bourbonnais has been quite unpredictable over the years.
Historical Oct. 21 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 | 57°F | 43°F | 0 mm | 0 mm | 0 mm | 27 mph | 14 mph |
| 2011 | 54°F | 38°F | 0 mm | 0 mm | 0 mm | 18 mph | 7 mph |
| 2012 | 68°F | 39°F | 0 mm | 0 mm | 0 mm | 22 mph | 10 mph |
| 2013 | 58°F | 38°F | 1.6 mm | 1.6 mm | 0 mm | 28 mph | 15 mph |
| 2014 | 53°F | 44°F | 0 mm | 0 mm | 0 mm | 24 mph | 12 mph |
| 2015 | 79°F | 58°F | 0 mm | 0 mm | 0 mm | 35 mph | 14 mph |
| 2016 | 54°F | 43°F | 0 mm | 0 mm | 0 mm | 24 mph | 11 mph |
| 2017 | 74°F | 59°F | 0 mm | 0 mm | 0 mm | 31 mph | 17 mph |
| 2018 | 49°F | 27°F | 0 mm | 0 mm | 0 mm | 22 mph | 12 mph |
| 2019 | 66°F | 52°F | 7.9 mm | 7.9 mm | 0 mm | 44 mph | 24 mph |
| 2020 | 58°F | 45°F | 4 mm | 4 mm | 0 mm | 25 mph | 12 mph |
| 2021 | 63°F | 50°F | 1.3 mm | 1.3 mm | 0 mm | 32 mph | 18 mph |
| 2022 | 72°F | 45°F | 0 mm | 0 mm | 0 mm | 30 mph | 17 mph |
| 2023 | 66°F | 41°F | 0.3 mm | 0.3 mm | 0 mm | 35 mph | 20 mph |
| 2024 | 80°F | 52°F | 0 mm | 0 mm | 0 mm | 21 mph | 11 mph |
