Charlestown, RI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charlestown, a community in Washington County, Rhode Island.
Overnight
54°F
Mostly Cloudy
Mostly cloudy, with a low around 54. North wind around 9 mph, with gusts as high as 22 mph.
7-day forecast for Charlestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Mostly Cloudy | 9 mph N | 0% |
| Saturday | 65°F | Mostly Sunny | 9 mph NE | 0% |
| Saturday Night | 51°F | Partly Cloudy | 6 mph E | 0% |
| Sunday | 66°F | Mostly Cloudy then Chance Rain Showers | 5 to 12 mph SE | 68% |
| Sunday Night | 58°F | Patchy Fog | 7 to 10 mph E | 91% |
| Monday | 65°F | Chance Rain Showers | 12 to 16 mph NE | 50% |
| Monday Night | 53°F | Slight Chance Rain Showers | 9 to 14 mph NE | 19% |
| Tuesday | 63°F | Slight Chance Rain Showers | 14 to 18 mph NE | 18% |
| Tuesday Night | 52°F | Mostly Cloudy | 14 to 17 mph NE | 11% |
| Wednesday | 63°F | Partly Sunny | 17 to 22 mph NE | 14% |
| Wednesday Night | 52°F | Slight Chance Rain Showers | 15 to 20 mph NE | 24% |
| Thursday | 63°F | Chance Rain Showers | 18 to 22 mph NE | 31% |
| Thursday Night | 52°F | Chance Rain Showers | 13 to 20 mph NE | 40% |
| Friday | 65°F | Chance Rain Showers | 15 to 20 mph N | 35% |
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 Sep 19, 2026.