Colebrook, NH Weather & Growing Conditions
Today
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 62 in the afternoon. Southwest wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Partly Sunny | 0 mph | 3% |
| Tonight | 51°F | Mostly Cloudy | 0 mph | 3% |
| Thursday | 64°F | Light Rain | 0 to 5 mph S | 82% |
| Thursday Night | 49°F | Light Rain | 0 mph | 79% |
| Friday | 61°F | Slight Chance Light Rain then Mostly Cloudy | 0 mph | 18% |
| Friday Night | 46°F | Light Rain Likely | 0 mph | 60% |
| Saturday | 55°F | Light Rain Likely | 0 mph | 55% |
| Saturday Night | 38°F | Chance Light Rain | 0 mph | 48% |
| Sunday | 45°F | Chance Light Rain | 0 mph | 42% |
| Sunday Night | 32°F | Chance Light Rain | 0 mph | 30% |
| Monday | 42°F | Chance Rain And Snow | 0 to 5 mph W | 40% |
| Monday Night | 28°F | Slight Chance Rain And Snow then Mostly Cloudy | 0 mph | 31% |
| Tuesday | 42°F | Chance Rain And Snow | 0 to 5 mph SW | 35% |
| Tuesday Night | 28°F | Chance Rain And Snow | 0 to 5 mph W | 36% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Colebrook, NH
Last spring frost
May 31
First fall frost
Sep 21
Growing season
112 days
Hardiness zone
4a
Explore more for Colebrook, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Colebrook 3Sw, Nh (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.