Piscataway (NJ) Temperature by Month
Piscataway in New Jersey, United States of America sees significant seasonal temperature differences, with daytime highs between 5°C (41°F) in January and 31°C (88°F) in July, averaging 18°C (64°F) annually. Explore the full monthly breakdown below.
Piscataway Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to cold in Piscataway. Nighttime lows follow the same pattern, ranging from 19°C (66°F) to -5°C (23°F).
The chart below illustrates the average maximum day and minimum night temperatures in Piscataway by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. July, the warmest month, sees 269 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Piscataway vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Piscataway vs World: Temperature Compared
Piscataway's average annual maximum temperature is 18°C (64°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Osaka, Japan averages 22°C (72°F) annually, with hot humid summers, mild winters, and pleasant spring and autumn seasons.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Piscataway's weather — including monthly rainfall, sunshine hours, and humidity — visit our Piscataway climate page.
