Belvidere, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Belvidere, a town in Warren County, New Jersey.
Today
84°F
Sunny
Sunny, with a high near 84. Wind around 0 mph.
7-day forecast for Belvidere
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 0 mph | 0% |
| Tonight | 62°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 0 mph | 49% |
| Wednesday Night | 69°F | Showers And Thunderstorms Likely | 0 mph | 58% |
| Thursday | 88°F | Showers And Thunderstorms | 0 to 5 mph SW | 75% |
| Thursday Night | 70°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph SW | 75% |
| Friday | 88°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph SW | 60% |
| Friday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 mph | 60% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 51% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 51% |
| Sunday | 88°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 69°F | Mostly Clear | 0 to 5 mph SW | 12% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 17% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 17% |
Forecast source: National Weather Service (api.weather.gov) for Belvidere (40.830, -75.073). Updated through the day.
Growing snapshot for Belvidere
Last spring frost
Apr 30
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
7a
More local growing data for Belvidere: nearby ZIP 07823 weather · frost dates · planting calendar · New Jersey frost dates
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Climate data from the nearest NOAA station, Belvidere Brg, Nj (2 mi from Belvidere). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.