Charlestown, NH Weather & Growing Conditions
Today
81°F
Sunny
Sunny, with a high near 81. West wind 0 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 0 to 10 mph W | 0% |
| Tonight | 57°F | Partly Cloudy then Areas Of Fog | 0 to 5 mph S | 0% |
| Wednesday | 82°F | Areas Of Fog then Partly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 64°F | Mostly Cloudy | 0 to 5 mph S | 11% |
| Thursday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 47% |
| Thursday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 41% |
| Friday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 25% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 23% |
| Saturday | 83°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 47% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 41% |
| Sunday | 85°F | Sunny | 0 to 5 mph SW | 9% |
| Sunday Night | 64°F | Mostly Clear | 0 to 5 mph SW | 9% |
| Monday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 23% |
| Monday Night | 62°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 22% |
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 Aug 4, 2026.