Charlestown, NH Weather & Growing Conditions
This Afternoon
70°F
Sunny
Sunny. High near 70, with temperatures falling to around 64 in the afternoon. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Sunny | 5 mph S | 2% |
| Tonight | 52°F | Partly Cloudy | 5 mph S | 1% |
| Thursday | 65°F | Light Rain Likely | 5 to 10 mph S | 68% |
| Thursday Night | 56°F | Chance Light Rain | 0 to 10 mph SW | 38% |
| Friday | 65°F | Chance Light Rain | 0 mph | 45% |
| Friday Night | 50°F | Light Rain Likely | 0 mph | 65% |
| Saturday | 58°F | Chance Light Rain | 0 to 5 mph N | 46% |
| Saturday Night | 41°F | Chance Light Rain | 5 mph NW | 40% |
| Sunday | 52°F | Chance Light Rain then Partly Sunny | 5 to 10 mph NW | 30% |
| Sunday Night | 33°F | Partly Cloudy | 5 mph W | 10% |
| Monday | 49°F | Slight Chance Light Rain | 5 to 10 mph W | 17% |
| Monday Night | 31°F | Partly Cloudy | 5 mph W | 13% |
| Tuesday | 53°F | Mostly Sunny | 5 to 10 mph SW | 7% |
| Tuesday Night | 30°F | Partly Cloudy | 5 mph W | 7% |
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 Nov 4, 2026.