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Precipitation patterns have also fluctuated, with May 20, 2017 recording the highest precipitation in the past 15 years at 18.2 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 May 20 reaching 44 mph (2022) and the highest sustained wind speed recorded at 25 mph (2022).
These historical trends suggest that the weather on May 20 in Bourbonnais has been quite unpredictable over the years.
Historical May 20 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 | 72°F | 47°F | 8.2 mm | 8.2 mm | 0 mm | 28 mph | 15 mph |
| 2011 | 76°F | 51°F | 0 mm | 0 mm | 0 mm | 17 mph | 11 mph |
| 2012 | 89°F | 65°F | 4.3 mm | 4.3 mm | 0 mm | 30 mph | 14 mph |
| 2013 | 84°F | 67°F | 2.8 mm | 2.8 mm | 0 mm | 33 mph | 16 mph |
| 2014 | 82°F | 60°F | 7.2 mm | 7.2 mm | 0 mm | 26 mph | 15 mph |
| 2015 | 51°F | 41°F | 2.4 mm | 2.4 mm | 0 mm | 22 mph | 11 mph |
| 2016 | 67°F | 50°F | 0 mm | 0 mm | 0 mm | 22 mph | 11 mph |
| 2017 | 76°F | 51°F | 18.2 mm | 18.2 mm | 0 mm | 37 mph | 21 mph |
| 2018 | 64°F | 51°F | 2.6 mm | 2.6 mm | 0 mm | 26 mph | 13 mph |
| 2019 | 57°F | 46°F | 0 mm | 0 mm | 0 mm | 26 mph | 14 mph |
| 2020 | 66°F | 52°F | 0 mm | 0 mm | 0 mm | 30 mph | 16 mph |
| 2021 | 82°F | 66°F | 0.1 mm | 0.1 mm | 0 mm | 29 mph | 16 mph |
| 2022 | 88°F | 64°F | 4.5 mm | 4.5 mm | 0 mm | 44 mph | 25 mph |
| 2023 | 73°F | 48°F | 0 mm | 0 mm | 0 mm | 26 mph | 12 mph |
| 2024 | 83°F | 61°F | 1.3 mm | 1.3 mm | 0 mm | 34 mph | 19 mph |
