Trenton, NJ Weather & Climate Normals
Trenton's real weather, in one number
Trenton, 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.
Trenton's hottest and coldest months
Trenton's hottest month is Jul, averaging 76°F; its coldest is Jan, averaging 31°F, a 44.5°F swing across the year, a middling gap by national standards.
Trenton's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 40°F | 23°F | 3.64in |
| Feb | 43°F | 24°F | 2.75in |
| Mar | 51°F | 31°F | 4.43in |
| Apr | 63°F | 41°F | 3.64in |
| May | 73°F | 50°F | 3.54in |
| Jun | 82°F | 59°F | 4.65in |
| Jul | 87°F | 65°F | 4.82in |
| Aug | 84°F | 63°F | 4.27in |
| Sep | 78°F | 56°F | 4.13in |
| Oct | 66°F | 44°F | 3.98in |
| Nov | 55°F | 35°F | 3.16in |
| Dec | 45°F | 26°F | 4.34in |
May, Jun, Aug, Sep, and Oct are the best time to see Trenton at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in Trenton
Over a typical year, Trenton sees about 47.35in of precipitation a year across roughly 115 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Trenton ranks
Trenton ranks 1647 of 4876 US cities in this dataset for comfort score, and 26 of 194 within NJ. About 91,193 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Trenton State College, NJ US, 3.6 miles from Trenton, 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