Glen Gardner, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Glen Gardner, a borough in Hunterdon County, New Jersey.
Today
83°F
Mostly Sunny
Mostly sunny, with a high near 83. Northeast wind around 0 mph.
7-day forecast for Glen Gardner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Mostly Sunny | 0 mph | 0% |
| Tonight | 62°F | Mostly Cloudy | 0 mph | 1% |
| Wednesday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 mph | 45% |
| Wednesday Night | 68°F | Showers And Thunderstorms Likely | 0 mph | 56% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 0 to 5 mph SW | 71% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph W | 71% |
| Friday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 52% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 0 mph | 52% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 45% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 mph | 45% |
| Sunday | 86°F | Mostly Sunny | 0 to 5 mph W | 12% |
| Sunday Night | 68°F | Mostly Clear | 0 to 5 mph W | 12% |
| Monday | 87°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 15% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Glen Gardner (40.700, -74.940). Updated through the day.
Growing snapshot for Glen Gardner
Last spring frost
Apr 24
First fall frost
Oct 21
Growing season
179 days
Hardiness zone
6b
More local growing data for Glen Gardner: nearby ZIP 08826 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
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Bloomsbury
Califon
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Pottersville
Ringoes
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Three Bridges
White House Station
Climate data from the nearest NOAA station, Flemington 5 Nnw, Nj (10 mi from Glen Gardner). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.