Raritan, NJ Weather & Growing Conditions
This Afternoon
74°F
Sunny
Sunny. High near 74, with temperatures falling to around 68 in the afternoon. South wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Sunny | 0 to 5 mph S | 1% |
| Tonight | 55°F | Mostly Cloudy | 0 mph | 1% |
| Thursday | 73°F | Chance Light Rain | 0 to 5 mph S | 50% |
| Thursday Night | 59°F | Light Rain | 0 to 5 mph SW | 77% |
| Friday | 70°F | Light Rain | 0 mph | 77% |
| Friday Night | 49°F | Light Rain | 0 mph | 77% |
| Saturday | 65°F | Mostly Sunny | 0 to 5 mph NW | 12% |
| Saturday Night | 39°F | Slight Chance Light Rain | 5 mph W | 16% |
| Sunday | 60°F | Mostly Sunny | 5 mph W | 8% |
| Sunday Night | 35°F | Partly Cloudy | 0 to 5 mph W | 4% |
| Monday | 58°F | Sunny | 5 to 10 mph W | 7% |
| Monday Night | 32°F | Mostly Clear | 0 to 5 mph W | 6% |
| Tuesday | 62°F | Sunny | 5 to 10 mph W | 4% |
| Tuesday Night | 34°F | Mostly Clear | 0 to 5 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Raritan, NJ
Last spring frost
Apr 30
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
7a
Explore more for Raritan, NJ: full frost dates · planting calendar · New Jersey frost dates
Climate data from the nearest NOAA station, Somerville 4 Nw, Nj (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.