Historical weather data, all-time temperature records, and monthly climate averages for Morristown, NJ. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Morristown sits right in that shoulder season sweet spot — expect a high around 57° and a low of 35°, though the date has a wild range in the record books. Temperatures have swung from a balmy 82° back in 1950 all the way down to a brutal 21° in 1932. There's roughly a 38% chance of rain, but snow? Essentially off the table.
Morristown doesn't mess around at the extremes — this is a place that has baked at 107° in July 2010 and frozen at -26° in February 1934, a swing of 133 degrees. A single August day in 1971 dropped 8.76 inches of rain, and a January storm in 1961 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 staying in the mid-80s through August. Winters are genuinely cold — January and February average highs in the upper 30s to low 40s. If you're trying to dodge the rain, avoid late July, which is Morristown's wettest stretch of the year.