Canaan, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Canaan, a community in Grafton County, New Hampshire.
Today
81°F
Sunny
Sunny, with a high near 81. West wind 5 to 10 mph.
7-day forecast for Canaan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 58°F | Mostly Clear then Areas Of Fog | 0 to 5 mph SW | 0% |
| Wednesday | 84°F | Areas Of Fog then Partly Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 7% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 39% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 34% |
| Friday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 28% |
| Friday Night | 65°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 28% |
| Saturday | 84°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 48% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 42% |
| Sunday | 86°F | Sunny | 0 to 5 mph W | 10% |
| Sunday Night | 65°F | Mostly Clear | 0 to 5 mph SW | 12% |
| Monday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 34% |
| Monday Night | 61°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 33% |
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 Aug 4, 2026.