Canaan, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Canaan, a community in Grafton County, New Hampshire.
Overnight
47°F
Partly Cloudy
Partly cloudy, with a low around 47. South wind around 0 mph.
7-day forecast for Canaan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Partly Cloudy | 0 mph | 2% |
| Wednesday | 73°F | Mostly Sunny | 0 to 5 mph SW | 2% |
| Wednesday Night | 51°F | Mostly Cloudy | 0 to 5 mph S | 2% |
| Thursday | 67°F | Light Rain | 5 mph S | 76% |
| Thursday Night | 54°F | Chance Light Rain | 0 to 5 mph SW | 39% |
| Friday | 66°F | Chance Light Rain | 0 mph | 34% |
| Friday Night | 49°F | Light Rain Likely | 0 mph | 68% |
| Saturday | 59°F | Chance Light Rain | 0 to 5 mph N | 50% |
| Saturday Night | 40°F | Chance Light Rain | 0 to 5 mph NW | 43% |
| Sunday | 53°F | Chance Light Rain | 5 to 10 mph NW | 33% |
| Sunday Night | 32°F | Mostly Cloudy then Slight Chance Light Rain | 5 mph W | 15% |
| Monday | 49°F | Slight Chance Light Rain | 5 to 10 mph W | 24% |
| Monday Night | 29°F | Slight Chance Light Rain then Partly Cloudy | 5 to 10 mph W | 16% |
| Tuesday | 52°F | Mostly Sunny | 5 to 10 mph W | 11% |
Forecast source: National Weather Service (api.weather.gov) for Canaan (43.650, -72.016). Updated through the day.
Growing snapshot for Canaan
Last spring frost
May 21
First fall frost
Sep 26
Growing season
127 days
Hardiness zone
5a
More local growing data for Canaan: nearby ZIP 03741 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Ashland
Bethlehem
Bristol
Enfield
Lebanon
Lincoln
Lisbon
Littleton
Mountain Lakes
North Haverhill
North Woodstock
Plymouth
Woodsville
Climate data from the nearest NOAA station, Grafton, Nh (8.1 mi from Canaan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.