North Brunswick, NJ climate
North Brunswick has chilly winters and warm summers, with plenty of rain. A typical July afternoon reaches 87°, a January night drops to 23°, and about 29 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in North Brunswick feels like
Winter
Spring
Summer
Fall
North Brunswick weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 41° | 23° | 3.5" | 8.3" | 11 | 9 | 24° – 39° |
| February | 44° | 25° | 2.8" | 9.3" | 10 | 10 | 23° – 40° |
| March | 52° | 31° | 4.1" | 5.2" | 11 | 5 | 36° – 50° |
| April | 64° | 40° | 3.7" | 0.6" | 12 | 0 | 48° – 56° |
| May | 73° | 50° | 4.0" | 0 | 13 | 0 | 57° – 67° |
| June | 82° | 59° | 4.4" | 0 | 11 | 0 | 67° – 75° |
| July | 87° | 65° | 5.0" | 0 | 11 | 0 | 71° – 79° |
| August | 85° | 63° | 4.4" | 0 | 10 | 0 | 70° – 77° |
| September | 78° | 57° | 4.0" | 0 | 9 | 0 | 65° – 72° |
| October | 66° | 44° | 4.2" | 0.2" | 10 | 0 | 51° – 62° |
| November | 55° | 35° | 3.2" | 0.5" | 9 | 0 | 41° – 50° |
| December | 45° | 28° | 4.3" | 4.9" | 10 | 4 | 30° – 49° |
| Year | 64° | 43° | 47.6" | 29.0" | 125 | 27 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in North Brunswick
North Brunswick gets 48 inches of rain and melted snow a year. July is the wettest month and February the driest. Rain or snow falls on about 125 days a year. Snow covers the ground about 27 days of the year.
About 193 frost-free days a year
In half of years the last 32° night comes by April 15 and the first one by October 26. That leaves about 193 frost-free days for gardens, longer than 67% of U.S. towns.
Heating and cooling a home in North Brunswick
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In North Brunswick, 83% of that work is heating and 17% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
North Brunswick and its neighbors
North Brunswick borders 5 towns with climate data. January nights across them vary by 0.8°. Franklin has the coldest January nights (23°) and New Brunswick the hottest July afternoons (87°). North Brunswick’s January low is 23° and its July high 87°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How North Brunswick compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in North Brunswick averaged 2.2° warmer than the 1900s. The biggest change is in December (+3.9°). The shift is larger than in 98% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at North Brunswick’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. December swings the most: between 1991 and 2020 its average temperature ranged from 30° to 49°. June is the most reliable, staying within 7°.
Common questions about North Brunswick’s climate
What is the coldest month in North Brunswick?
January, with a typical high of 41° and a low of 23°.
What is the hottest month in North Brunswick?
July, with a typical high of 87° and a low of 65°. About 24 days a year reach 90°.
How much snow does North Brunswick get?
About 29 inches in a normal winter, most of it in February.
When is the first frost in North Brunswick?
In half of years the first 32° night comes by October 26, and the last spring frost by April 15.
What is the rainiest month in North Brunswick?
July, with 5.0 inches of rain and melted snow. The year totals 48 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for North Brunswick itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at New Brunswick 3 Se, NJ (3 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.