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Precipitation patterns have also fluctuated, with July 18, 2015 recording the highest precipitation in the past 15 years at 23.1 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 July 18 reaching 30 mph (2015) and the highest sustained wind speed recorded at 15 mph (2019).
These historical trends suggest that the weather on July 18 in Bourbonnais has been quite unpredictable over the years.
Historical July 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 | 86°F | 71°F | 5.6 mm | 5.6 mm | 0 mm | 26 mph | 11 mph |
| 2011 | 92°F | 77°F | 0.2 mm | 0.2 mm | 0 mm | 25 mph | 12 mph |
| 2012 | 97°F | 77°F | 0.1 mm | 0.1 mm | 0 mm | 16 mph | 12 mph |
| 2013 | 90°F | 73°F | 0 mm | 0 mm | 0 mm | 19 mph | 9 mph |
| 2014 | 76°F | 56°F | 0 mm | 0 mm | 0 mm | 13 mph | 8 mph |
| 2015 | 88°F | 74°F | 23.1 mm | 23.1 mm | 0 mm | 30 mph | 12 mph |
| 2016 | 85°F | 71°F | 2.7 mm | 2.7 mm | 0 mm | 21 mph | 9 mph |
| 2017 | 85°F | 58°F | 0 mm | 0 mm | 0 mm | 11 mph | 6 mph |
| 2018 | 77°F | 61°F | 0 mm | 0 mm | 0 mm | 20 mph | 10 mph |
| 2019 | 90°F | 73°F | 7.8 mm | 7.8 mm | 0 mm | 27 mph | 15 mph |
| 2020 | 90°F | 73°F | 0 mm | 0 mm | 0 mm | 27 mph | 14 mph |
| 2021 | 80°F | 62°F | 1 mm | 1 mm | 0 mm | 18 mph | 9 mph |
| 2022 | 84°F | 65°F | 0.2 mm | 0.2 mm | 0 mm | 14 mph | 8 mph |
| 2023 | 79°F | 56°F | 0 mm | 0 mm | 0 mm | 17 mph | 10 mph |
| 2024 | 72°F | 57°F | 0 mm | 0 mm | 0 mm | 21 mph | 11 mph |
