Charlestown, RI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charlestown, a community in Washington County, Rhode Island.
Today
78°F
Mostly Sunny
Mostly sunny, with a high near 78. Southwest wind 2 to 8 mph.
7-day forecast for Charlestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Mostly Sunny | 2 to 8 mph SW | 0% |
| Tonight | 62°F | Mostly Cloudy | 1 to 6 mph NW | 12% |
| Wednesday | 77°F | Mostly Sunny | 1 to 8 mph NW | 13% |
| Wednesday Night | 67°F | Mostly Cloudy | 6 mph SW | 13% |
| Thursday | 79°F | Mostly Sunny | 3 to 13 mph SW | 13% |
| Thursday Night | 70°F | Partly Cloudy | 6 to 10 mph SW | 10% |
| Friday | 80°F | Mostly Sunny | 6 to 12 mph SW | 5% |
| Friday Night | 70°F | Partly Cloudy | 5 to 10 mph SW | 12% |
| Saturday | 80°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 10 mph SW | 16% |
| Saturday Night | 69°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 8 mph SW | 21% |
| Sunday | 80°F | Mostly Sunny | 3 to 10 mph SW | 12% |
| Sunday Night | 68°F | Partly Cloudy | 5 to 9 mph SW | 10% |
| Monday | 80°F | Mostly Sunny | 5 to 12 mph SW | 5% |
| Monday Night | 68°F | Mostly Clear | 10 mph SW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Charlestown (41.378, -71.627). Updated through the day.
Growing snapshot for Charlestown
Last spring frost
Apr 11
First fall frost
Oct 31
Growing season
201 days
Hardiness zone
7a
More local growing data for Charlestown: nearby ZIP 02813 weather · frost dates · planting calendar · Rhode Island frost dates
Nearby towns & communities
Ashaway
Bradford
Carolina
Hope Valley
Hopkinton
Kingston
Narragansett Pier
Quonochontaug
Wakefield-Peace Dale
Weekapaug
Westerly
Wyoming
Climate data from the nearest NOAA station, Westerly State Ap, Ri (7.4 mi from Charlestown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.