Colebrook, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Colebrook, a community in Essex County, New Hampshire.
Tonight
34°F
Mostly Clear then Patchy Fog
Patchy fog between 1am and 3am, then patchy frost and patchy fog. Mostly clear, with a low around 34. Southwest wind around 0 mph.
7-day forecast for Colebrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 34°F | Mostly Clear then Patchy Fog | 0 mph | 0% |
| Saturday | 59°F | Areas Of Frost then Sunny | 0 to 5 mph N | 0% |
| Saturday Night | 37°F | Mostly Cloudy | 0 mph | 0% |
| Sunday | 60°F | Rain Showers Likely | 0 mph | 69% |
| Sunday Night | 42°F | Rain Showers Likely then Mostly Cloudy | 0 mph | 61% |
| Monday | 58°F | Partly Sunny | 0 mph | 1% |
| Monday Night | 37°F | Mostly Cloudy | 0 mph | 0% |
| Tuesday | 62°F | Partly Sunny | 0 mph | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 0 mph | 1% |
| Wednesday | 64°F | Mostly Sunny | 0 mph | 1% |
| Wednesday Night | 39°F | Partly Cloudy | 0 mph | 7% |
| Thursday | 64°F | Partly Sunny then Slight Chance Rain Showers | 0 mph | 18% |
| Thursday Night | 43°F | Chance Rain Showers | 0 mph | 25% |
| Friday | 65°F | Slight Chance Rain Showers | 0 mph | 23% |
Forecast source: National Weather Service (api.weather.gov) for Colebrook (44.895, -71.494). Updated through the day.
Growing snapshot for Colebrook
Last spring frost
May 31
First fall frost
Sep 21
Growing season
112 days
Hardiness zone
4a
More local growing data for Colebrook: nearby ZIP 05903 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Colebrook 3Sw, Nh (5.6 mi from Colebrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.