Contoocook, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Contoocook, a community in Merrimack County, New Hampshire.
Overnight
45°F
Mostly Clear
Mostly clear, with a low around 45. Wind around 0 mph.
7-day forecast for Contoocook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Mostly Clear | 0 mph | 2% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph SW | 3% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph S | 2% |
| Thursday | 70°F | Mostly Cloudy then Light Rain Likely | 0 to 10 mph S | 60% |
| Thursday Night | 56°F | Chance Light Rain | 0 to 5 mph SW | 30% |
| Friday | 69°F | Light Rain Likely | 0 mph | 63% |
| Friday Night | 51°F | Light Rain | 0 mph | 81% |
| Saturday | 62°F | Light Rain Likely | 0 to 5 mph N | 64% |
| Saturday Night | 40°F | Chance Light Rain | 0 to 5 mph NW | 38% |
| Sunday | 57°F | Chance Light Rain then Partly Sunny | 5 mph NW | 31% |
| Sunday Night | 32°F | Partly Cloudy | 0 to 5 mph W | 8% |
| Monday | 53°F | Slight Chance Light Rain | 5 to 10 mph W | 15% |
| Monday Night | 30°F | Partly Cloudy | 5 mph W | 12% |
| Tuesday | 56°F | Mostly Sunny | 5 to 10 mph W | 7% |
Forecast source: National Weather Service (api.weather.gov) for Contoocook (43.231, -71.713). Updated through the day.
Growing snapshot for Contoocook
Last spring frost
May 6
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
5b
More local growing data for Contoocook: nearby ZIP 03229 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Bradford
Concord
Franklin
Henniker
Hooksett
Loudon
New London
Pittsfield
Suncook
Tilton Northfield
Warner
Climate data from the nearest NOAA station, Hopkinton Lake, Nh (2.6 mi from Contoocook). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.