Canaan, NH Weather & Growing Conditions
Tonight
42°F
Partly Cloudy
Partly cloudy, with a low around 42. Southeast wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Partly Cloudy | 0 mph | 1% |
| Sunday | 52°F | Rain | 0 to 5 mph E | 100% |
| Sunday Night | 43°F | Rain then Patchy Fog | 0 to 5 mph NE | 77% |
| Monday | 60°F | Patchy Fog then Mostly Sunny | 5 mph N | 0% |
| Monday Night | 38°F | Mostly Cloudy | 0 to 5 mph N | 0% |
| Tuesday | 60°F | Partly Sunny | 0 to 5 mph NE | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 0 mph | 0% |
| Wednesday | 61°F | Mostly Sunny | 0 to 5 mph E | 1% |
| Wednesday Night | 39°F | Partly Cloudy | 0 to 5 mph E | 2% |
| Thursday | 61°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph E | 16% |
| Thursday Night | 41°F | Chance Rain Showers | 0 to 5 mph NE | 32% |
| Friday | 60°F | Chance Rain Showers | 0 to 5 mph N | 32% |
| Friday Night | 43°F | Chance Rain Showers | 5 mph N | 35% |
| Saturday | 63°F | Chance Rain Showers | 5 to 10 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Canaan, NH
Last spring frost
May 21
First fall frost
Sep 26
Growing season
127 days
Hardiness zone
5a
Explore more for Canaan, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, Grafton, Nh (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.