Bloomsbury, NJ Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bloomsbury, a borough in Hunterdon County, New Jersey.
This Afternoon
73°F
Partly Sunny
Partly sunny, with a high near 73. Southeast wind around 0 mph.
7-day forecast for Bloomsbury
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Partly Sunny | 0 mph | 1% |
| Tonight | 58°F | Mostly Cloudy then Chance Rain Showers | 0 to 5 mph SE | 43% |
| Sunday | 73°F | Rain Showers | 5 mph SE | 94% |
| Sunday Night | 56°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph N | 88% |
| Monday | 70°F | Partly Sunny then Slight Chance Rain Showers | 5 to 10 mph NE | 23% |
| Monday Night | 51°F | Chance Rain Showers | 5 mph NE | 31% |
| Tuesday | 64°F | Chance Rain Showers | 5 to 10 mph NE | 37% |
| Tuesday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 35% |
| Wednesday | 63°F | Slight Chance Rain Showers | 10 mph NE | 20% |
| Wednesday Night | 49°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Thursday | 62°F | Slight Chance Rain Showers | 10 to 15 mph NE | 24% |
| Thursday Night | 48°F | Chance Rain Showers | 10 mph NE | 30% |
| Friday | 66°F | Chance Rain Showers | 10 mph N | 33% |
| Friday Night | 50°F | Chance Rain Showers | 5 to 10 mph N | 33% |
Forecast source: National Weather Service (api.weather.gov) for Bloomsbury (40.657, -75.076). Updated through the day.
Growing snapshot for Bloomsbury
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
7a
More local growing data for Bloomsbury: nearby ZIP 08804 weather · frost dates · planting calendar · New Jersey frost dates
Nearby towns & communities
Annandale
Asbury
Califon
Clinton
Flemington
Frenchtown
Glen Gardner
Hampton
High Bridge
Lambertville
Lebanon
Milford
Oldwick
Pottersville
Ringoes
Stockton
Three Bridges
White House Station
Climate data from the nearest NOAA station, Phillipsburg-Easton Brg, Nj (6.4 mi from Bloomsbury). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.