Old Tappan, NJ Weather & Climate Normals
Old Tappan's real weather, in one number
Old Tappan, NJ scores 51/100 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. 6 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Old Tappan's hottest and coldest months
Old Tappan's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 32°F, a 43.5°F swing across the year, a middling gap by national standards.
Rain and snow in Old Tappan
Old Tappan averages 51.24in of precipitation a year across roughly 124 days with measurable rain or snow, and 32.7in of snow a year.
Where Old Tappan ranks
Old Tappan ranks 1600 of 4876 US cities in this dataset for comfort score, and 17 of 194 within NJ. About 6,342 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from DOBBS FERRY-ARDSLEY, NY US, 7.9 miles from Old Tappan, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station