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Precipitation patterns have also fluctuated, with May 18, 2020 recording the highest precipitation in the past 15 years at 36.1 mm, all of which came from rainfall. Interestingly, three 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 18 reaching 34 mph (2022) and the highest sustained wind speed recorded at 13 mph (2022).
These historical trends suggest that the weather on May 18 in Petersburg has been quite unpredictable over the years.
Historical May 18 Weather in Petersburg (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 | 61°F | 55°F | 0.1 mm | 0.1 mm | 0 mm | 18 mph | 8 mph |
| 2011 | 55°F | 49°F | 3.4 mm | 3.4 mm | 0 mm | 16 mph | 5 mph |
| 2012 | 80°F | 53°F | 0 mm | 0 mm | 0 mm | 13 mph | 6 mph |
| 2013 | 78°F | 64°F | 8.6 mm | 8.6 mm | 0 mm | 19 mph | 5 mph |
| 2014 | 64°F | 43°F | 0 mm | 0 mm | 0 mm | 12 mph | 5 mph |
| 2015 | 74°F | 66°F | 5.4 mm | 5.4 mm | 0 mm | 28 mph | 9 mph |
| 2016 | 65°F | 49°F | 1.3 mm | 1.3 mm | 0 mm | 25 mph | 10 mph |
| 2017 | 79°F | 67°F | 13 mm | 13 mm | 0 mm | 34 mph | 12 mph |
| 2018 | 77°F | 65°F | 12.7 mm | 12.7 mm | 0 mm | 25 mph | 10 mph |
| 2019 | 83°F | 62°F | 0.2 mm | 0.2 mm | 0 mm | 27 mph | 10 mph |
| 2020 | 67°F | 59°F | 36.1 mm | 36.1 mm | 0 mm | 30 mph | 10 mph |
| 2021 | 76°F | 57°F | 0.8 mm | 0.8 mm | 0 mm | 22 mph | 7 mph |
| 2022 | 77°F | 57°F | 17 mm | 17 mm | 0 mm | 34 mph | 13 mph |
| 2023 | 75°F | 46°F | 0 mm | 0 mm | 0 mm | 15 mph | 8 mph |
| 2024 | 77°F | 59°F | 0.2 mm | 0.2 mm | 0 mm | 13 mph | 5 mph |
