Historical weather data, all-time temperature records, and monthly climate averages for Robertsville, NJ. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Robertsville runs cool, with an average high of 57° and low of 36° across 108 years of records. The date has seen wild swings though — from a balmy 84° back in 1892 to a teeth-chattering 20° in 1896. There's about a 1-in-3 chance of rain today, but snow is nearly off the table at just 1%.
Robertsville has seen the full extremes of a mid-Atlantic climate, from a scorching 106° in July 1936 to a brutal -20° in February 1934 — a range of 126 degrees. The wettest day on record dumped 8.23 inches during Hurricane Irene in August 2011, and a single February storm in 1899 buried the area under 20 inches of snow.
Summer is the clear headliner here, with average highs peaking at 87° during the third week of July and staying in the mid-80s through August. If you're cold-averse, avoid mid-January, when highs average just 39°. Late July is also the wettest stretch of the year, averaging over an inch of precipitation in a single week.