South River, NJ Weather & Climate Normals
South River's real weather, in one number
South River, NJ scores 47/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
South River's hottest and coldest months
South River's hottest month is Jul, averaging 76°F; its coldest is Jan, averaging 32°F, a 44.5°F swing across the year, a middling gap by national standards.
South River's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 40°F | 23°F | 3.74in | 8.3in |
| Feb | 43°F | 24°F | 2.97in | 9.3in |
| Mar | 51°F | 31°F | 4.4in | 5.2in |
| Apr | 63°F | 41°F | 3.89in | 0.6in |
| May | 72°F | 51°F | 4.03in | 0in |
| Jun | 81°F | 60°F | 4.83in | 0in |
| Jul | 87°F | 66°F | 4.83in | 0in |
| Aug | 85°F | 64°F | 4.66in | 0in |
| Sep | 78°F | 57°F | 4.18in | 0in |
| Oct | 67°F | 44°F | 4.11in | 0.2in |
| Nov | 56°F | 35°F | 3.4in | 0.5in |
| Dec | 45°F | 28°F | 4.49in | 4.9in |
May, Jun, Aug, Sep, and Oct are the best time to see South River at its mildest; the rest of the year, plan around Jul's heat and Jan's cold.
Rain and snow in South River
South River averages 49.53in of precipitation a year across roughly 125 days with measurable rain or snow, and 29in of snow a year.
Where South River ranks
South River ranks 2686 of 4876 US cities in this dataset for comfort score, and 77 of 194 within NJ. About 16,392 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from New Brunswick 3 Se, NJ US, 3.0 miles from South River, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station