Piscataway (NJ) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Piscataway.
Climate overview of Piscataway
Piscataway, New Jersey, United States of America, sees big temperature differences between seasons, with July peaking at 31°C (88°F) and January dropping to 5°C (41°F).
Rain/snowfall is high, totalling around 1230 mm (48 in) per year. December is the wettest month and November the driest. The city also experiences very warm summers and cold winters. The most sunshine falls in July, with an average of 9.0 hours of daily sunshine.
Piscataway Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Piscataway - and find the best time to visit.
Monthly Temperature in Piscataway
Visitors to Piscataway can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 31°C (88°F) in July, the warmest time of the year, to a chilly 5°C (41°F) during cooler months like January.
At night, you can expect temperatures ranging from 19°C (66°F) in July to around -5°C (23°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Piscataway
Piscataway is known for its substantial rain/snowfall, with annual precipitation reaching 1230 mm (48 in). While rainfall varies throughout the year, each season offers its own charm. December brings wetter days averaging 126 mm (5 in) of precipitation, spread over 11 rainy days.
In contrast, the driest month November experiences a drier climate, with about 75 mm (3 in) of rainfall spread across 9 rainy days. For more details, please visit our Piscataway Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Piscataway
Seasonal changes in sunshine hours are quite dramatic in Piscataway. While July receives considerable daily sunshine with up to 9.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Best Time to Visit Piscataway
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May and September
- Warmest weather: July and August
- Most sunshine: June and July
- Fewer rainy days: January, February, March, September and November
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -5°C (23°F).
Frequently asked questions about the climate in Piscataway
What is the best time to visit Piscataway?
May and September typically offer the most optimal weather in Piscataway. In contrast, January, February and December tend to have less optimal conditions. Piscataway has very warm summers and cold winters.
What temperatures can I expect in Piscataway?
Daytime highs range from 5°C (41°F) in January to 31°C (88°F) in July. Nighttime lows range from -5°C (23°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Piscataway get?
Annual rainfall is around 1230 mm (48 in). December is the wettest month with 126 mm (5 in), while November is the driest with 75 mm (3 in).
How sunny is Piscataway?
Piscataway receives around 2,502 hours of sunshine per year. July is the sunniest month with 269 hours, while December is the cloudiest with just 140 hours. Overall, Piscataway enjoys abundant sunshine.
Piscataway 3-Day Forecast
Piscataway on the map
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