Historical weather data, all-time temperature records, and monthly climate averages for Middletown, NJ. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Middletown sits right in the shoulder of spring, with a typical high of 58° and low of 36° based on 108 years of data. The date has seen wild swings, from a balmy 78° as recently as 2023 to a teeth-chattering 21° back in 1995. Rain is a coin-flip at 38%, but snow is nearly off the table at just 2%.
Middletown's weather has genuine teeth — the thermometer has swung from a brutal -20° in February 1934 to a scorching 106° in July 1936, a 126-degree spread over the station's history. Hurricane Irene put the wettest day on the books, dumping 8.23 inches on August 28, 2011, while a single February storm in 1899 buried the area under 20 inches of snow.
Summer is the main event here, with highs peaking around 87° in mid-to-late July and the wettest stretch of the year arriving right on its heels in late July at over an inch per week. Winters are cold but not brutal, with January and February highs only in the low 40s. Spring and fall offer the most comfortable windows, with April climbing through the 60s and October holding steady at 66°.