Historical weather data, all-time temperature records, and monthly climate averages for Middlesex, NJ. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Middlesex tends to straddle the line between lingering winter and early spring — historically, highs land around 58° but have swung anywhere from a raw 26° (1995) to a shirt-sleeve 79° (1981). There's better than a coin flip chance of rain today at 54%, so keep an umbrella handy, though snow is essentially off the table.
Middlesex has seen some serious weather extremes over its 58-year record: a brutal -13° in January 1984 on the cold end, and a sweltering 105° in July 2010 on the other. The wettest single day on record — 7.96 inches on August 28, 2011 — came courtesy of Hurricane Irene, and a February 2006 snowstorm buried the area under nearly 20 inches in a single day.
Middlesex summers are legitimately hot, with average highs peaking around 86-88° in mid-July, while mid-January is the depth of winter at just 38°. The wettest stretch of the year comes in late July, so summer travelers should pack accordingly. Spring and fall offer the most comfortable windows, with October averaging a pleasant 66°.