Charlestown, NH Weather & Growing Conditions
This Afternoon
63°F
Mostly Sunny
Mostly sunny, with a high near 63. North wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Mostly Sunny | 0 mph | 0% |
| Tonight | 44°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Sunday | 55°F | Rain Showers Likely then Rain | 5 mph SE | 98% |
| Sunday Night | 44°F | Rain then Rain Showers Likely | 0 to 5 mph NE | 88% |
| Monday | 61°F | Partly Sunny | 5 mph N | 1% |
| Monday Night | 40°F | Mostly Cloudy | 5 mph N | 1% |
| Tuesday | 60°F | Partly Sunny | 5 mph NE | 1% |
| Tuesday Night | 39°F | Mostly Cloudy | 0 to 5 mph NE | 1% |
| Wednesday | 61°F | Partly Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 39°F | Mostly Cloudy then Slight Chance Rain Showers | 0 to 5 mph NE | 15% |
| Thursday | 59°F | Chance Rain Showers | 5 mph NE | 32% |
| Thursday Night | 42°F | Chance Rain Showers | 5 mph NE | 32% |
| Friday | 61°F | Chance Rain Showers | 5 to 10 mph N | 33% |
| Friday Night | 43°F | Chance Rain Showers | 5 to 10 mph N | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Charlestown, NH
Last spring frost
May 9
First fall frost
Oct 2
Growing season
146 days
Hardiness zone
5b
Explore more for Charlestown, NH: full frost dates · planting calendar · New Hampshire frost dates
Climate data from the nearest NOAA station, N Springfield Lake, Vt (9.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.