Climate

Edison weather by month

Average highs, lows, rain and snow for every month, from 30 years of weather records.

Average temperatures

Best time to visit: May, September, October, when highs are mild and rain is lightest.

Month	High	Low	Rain	Snow	Wet days
January	40°F	23°F	3.7 in	8.3 in	11
February	43°F	24°F	3.0 in	9.3 in	10
March	51°F	31°F	4.4 in	5.2 in	11
April	63°F	41°F	3.9 in	0.60 in	12
May	72°F	51°F	4.0 in	0.00 in	13
June	81°F	60°F	4.8 in	0.00 in	11
July	87°F	66°F	4.8 in	0.00 in	11
August	85°F	64°F	4.7 in	0.00 in	10
September	78°F	57°F	4.2 in	0.00 in	9
October	67°F	44°F	4.1 in	0.20 in	10
November	56°F	35°F	3.4 in	0.50 in	9
December	45°F	28°F	4.5 in	4.9 in	10

NOAA U.S. Climate Normals 1991–2020, New Brunswick 3 Se, Nj Us (4.4 mi away, 111 ft). Wet days: days with at least 0.01 in of precipitation.

What is the hottest month in Edison?

July, with an average high of 87°F and low of 66°F.

What is the coldest month in Edison?

January, with an average low of 23°F and high of 40°F.

When does it rain most in Edison?

June is the wettest month, averaging 4.8 in of precipitation; the year totals about 49.5 inches.

Does it snow in Edison?

Yes. Snowfall averages about 29 inches a year, mostly in February and January.

What is the best time to visit Edison?

For mild weather (highs between 65°F and 85°F) with the least rain, May, September, October.

Where do these numbers come from?

NOAA’s 1991–2020 U.S. Climate Normals for the New Brunswick 3 Se weather station, 4.4 miles from downtown: 30-year averages, not a forecast.