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Precipitation patterns have also fluctuated, with June 18, 2010 recording the highest precipitation in the past 15 years at 14 mm, all of which came from rainfall. Interestingly, seven 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 18 reaching 39 mph (2012) and the highest sustained wind speed recorded at 21 mph (2012).
These historical trends suggest that the weather on June 18 in Bourbonnais has been quite unpredictable over the years.
Historical June 18 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 | 87°F | 69°F | 14 mm | 14 mm | 0 mm | 25 mph | 11 mph |
| 2011 | 82°F | 69°F | 0.1 mm | 0.1 mm | 0 mm | 17 mph | 10 mph |
| 2012 | 91°F | 70°F | 0 mm | 0 mm | 0 mm | 39 mph | 21 mph |
| 2013 | 75°F | 60°F | 0 mm | 0 mm | 0 mm | 24 mph | 13 mph |
| 2014 | 87°F | 71°F | 4.1 mm | 4.1 mm | 0 mm | 30 mph | 14 mph |
| 2015 | 82°F | 62°F | 6.1 mm | 6.1 mm | 0 mm | 30 mph | 14 mph |
| 2016 | 86°F | 60°F | 0 mm | 0 mm | 0 mm | 20 mph | 8 mph |
| 2017 | 78°F | 68°F | 0.6 mm | 0.6 mm | 0 mm | 35 mph | 17 mph |
| 2018 | 92°F | 74°F | 2.2 mm | 2.2 mm | 0 mm | 28 mph | 14 mph |
| 2019 | 76°F | 54°F | 0 mm | 0 mm | 0 mm | 12 mph | 5 mph |
| 2020 | 86°F | 62°F | 0 mm | 0 mm | 0 mm | 13 mph | 7 mph |
| 2021 | 95°F | 72°F | 0.1 mm | 0.1 mm | 0 mm | 35 mph | 18 mph |
| 2022 | 77°F | 55°F | 0 mm | 0 mm | 0 mm | 23 mph | 13 mph |
| 2023 | 86°F | 59°F | 0 mm | 0 mm | 0 mm | 22 mph | 11 mph |
| 2024 | 89°F | 74°F | 0.4 mm | 0.4 mm | 0 mm | 36 mph | 20 mph |
