Canaan, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Canaan, a community in Grafton County, New Hampshire.
Today
64°F
Sunny
Sunny, with a high near 64. Northwest wind 0 to 5 mph.
7-day forecast for Canaan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 64°F | Sunny | 0 to 5 mph NW | 0% |
| Tonight | 41°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 54°F | Rain Showers Likely then Rain | 0 to 5 mph SE | 97% |
| Sunday Night | 42°F | Rain then Chance Rain Showers | 0 to 5 mph NE | 82% |
| Monday | 61°F | Partly Sunny | 5 to 10 mph N | 1% |
| Monday Night | 38°F | Mostly Cloudy | 0 to 5 mph N | 0% |
| Tuesday | 61°F | Partly Sunny | 0 to 5 mph NE | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Wednesday | 62°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Wednesday Night | 39°F | Mostly Cloudy | 0 to 5 mph E | 5% |
| Thursday | 61°F | Chance Rain Showers | 0 to 5 mph NE | 27% |
| Thursday Night | 41°F | Chance Rain Showers | 0 to 5 mph NE | 28% |
| Friday | 63°F | Chance Rain Showers | 5 mph N | 29% |
| Friday Night | 42°F | Chance Rain Showers | 5 mph N | 30% |
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 Sep 19, 2026.