Climate of New Jersey, USA
Area-weighted average across New Jersey. For where people actually live and travel, see the cities below.
New Jersey, a subdivision of United States of America, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from -1.1°C / 30°F in January to 23.4°C / 74.1°F in July, with rainfall from 77 mm / 3 in to 112 mm / 4.4 in depending on the season (1176 mm / 46.3 in total across the year). See the city listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | -1.1°C30°F | 93 mm3.7″ | Snowy |
| February | 0.1°C32.2°F | 77 mm3″ | Snowy |
| March | 4.7°C40.5°F | 102 mm4″ | — |
| April | 10.1°C50.2°F | 100 mm3.9″ | — |
| May | 15.7°C60.3°F | 106 mm4.2″ | — |
| June | 20.5°C68.9°F | 95 mm3.7″ | — |
| July | 23.4°C74.1°F | 111 mm4.4″ | — |
| August | 22.6°C72.7°F | 112 mm4.4″ | — |
| September | 18.7°C65.7°F | 101 mm4″ | — |
| October | 12.5°C54.5°F | 88 mm3.5″ | — |
| November | 7.3°C45.1°F | 97 mm3.8″ | — |
| December | 1.9°C35.4°F | 94 mm3.7″ | Snowy |
Frequently asked questions
What is the best time to visit New Jersey?
New Jersey, United States of America does not have a clear sunny-and-dry window by our cutoffs. The warmest month is July at 23.4°C / 74.1°F, and the driest is February at 77 mm / 3 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of New Jersey?
New Jersey, United States of America has area-weighted monthly average temperatures ranging from -1.1°C / 30°F in January to 23.4°C / 74.1°F in July. Annual rainfall averages about 1176 mm / 46.3 in, with the wettest month being August (112 mm / 4.4 in) and the driest February (77 mm / 3 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in New Jersey?
The hottest month in New Jersey is July, with an area-wide average temperature of 23.4°C / 74.1°F.
What is the coldest month in New Jersey?
The coldest month in New Jersey is January, with an area-wide average temperature of -1.1°C / 30°F.
When does it rain most in New Jersey?
The wettest month in New Jersey is August, averaging about 112 mm / 4.4 in of rainfall. The driest is February with about 77 mm / 3 in.