Mendham, NJ Weather & Climate Normals
Mendham's real weather, in one number
Mendham, NJ scores 50/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Mendham's hottest and coldest months
Mendham's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 30°F, a 44.6°F swing across the year, a middling gap by national standards.
Mendham's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 39°F | 21°F | 3.16in |
| Feb | 43°F | 22°F | 2.2in |
| Mar | 51°F | 30°F | 3.89in |
| Apr | 63°F | 39°F | 3.59in |
| May | 73°F | 48°F | 3.54in |
| Jun | 81°F | 58°F | 4.23in |
| Jul | 86°F | 63°F | 4.93in |
| Aug | 84°F | 61°F | 5.18in |
| Sep | 78°F | 54°F | 3.82in |
| Oct | 66°F | 42°F | 3.67in |
| Nov | 55°F | 33°F | 3.41in |
| Dec | 44°F | 26°F | 3.87in |
May, Jun, Jul, Aug, and Sep are the best time to see Mendham at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Mendham
Over a typical year, Mendham sees about 45.49in of precipitation a year across roughly 153 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Mendham ranks
Mendham ranks 2012 of 4876 US cities in this dataset for comfort score, and 68 of 194 within NJ. About 5,000 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Somerville Somerset Ap, NJ US, 10.6 miles from Mendham, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is