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Precipitation patterns have also fluctuated, with April 21, 2016 recording the highest precipitation in the past 15 years at 4.5 mm, all of which came from rainfall. Interestingly, eight 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 April 21 reaching 41 mph (2015) and the highest sustained wind speed recorded at 18 mph (2015).
These historical trends suggest that the weather on April 21 in Wilmington has been quite unpredictable over the years.
Historical April 21 Weather in Wilmington (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 | 70°F | 45°F | 1.8 mm | 1.8 mm | 0 mm | 21 mph | 8 mph |
| 2011 | 57°F | 35°F | 2.4 mm | 2.4 mm | 0 mm | 28 mph | 13 mph |
| 2012 | 58°F | 43°F | 0 mm | 0 mm | 0 mm | 18 mph | 8 mph |
| 2013 | 60°F | 39°F | 0 mm | 0 mm | 0 mm | 25 mph | 11 mph |
| 2014 | 72°F | 58°F | 2.3 mm | 2.3 mm | 0 mm | 20 mph | 8 mph |
| 2015 | 63°F | 45°F | 0 mm | 0 mm | 0 mm | 41 mph | 18 mph |
| 2016 | 69°F | 53°F | 4.5 mm | 4.5 mm | 0 mm | 29 mph | 11 mph |
| 2017 | 58°F | 46°F | 0 mm | 0 mm | 0 mm | 33 mph | 17 mph |
| 2018 | 60°F | 41°F | 0 mm | 0 mm | 0 mm | 25 mph | 13 mph |
| 2019 | 75°F | 43°F | 0 mm | 0 mm | 0 mm | 26 mph | 14 mph |
| 2020 | 58°F | 43°F | 0 mm | 0 mm | 0 mm | 25 mph | 13 mph |
| 2021 | 48°F | 30°F | 0.2 mm | 0.2 mm | 0 mm | 24 mph | 12 mph |
| 2022 | 70°F | 51°F | 1.1 mm | 1.1 mm | 0 mm | 20 mph | 11 mph |
| 2023 | 65°F | 43°F | 0.1 mm | 0.1 mm | 0 mm | 31 mph | 15 mph |
| 2024 | 57°F | 35°F | 0 mm | 0 mm | 0 mm | 21 mph | 9 mph |
