Historical weather data, all-time temperature records, and monthly climate averages for Wilmington, OH. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4 in Wilmington runs cool but flirts with spring, with an average high of 61° and low of 39°. The date has seen a 54-degree swing in its history — from a balmy 78° in 1997 down to a harsh 24° in 1995. There's a coin-flip chance of rain today, so keep an umbrella handy.
Wilmington's weather has some serious range — 113 degrees separates its all-time high of 99° (June 2012) from its bone-chilling record low of -14° (February 2015). A single July storm in 2002 dropped 4.65 inches of rain in one day, and a January 1996 snowstorm buried the area under 12.4 inches.
Summer is peak warmth here, with highs hitting 85° during the first week of July before gradually easing into a crisp fall. If you're cold-averse, avoid mid-January, when average highs barely reach 35°. Pack a rain jacket for late April through early May — it's the wettest stretch of the year, averaging 1.45 inches in a single week.