Harmony, RI Weather & Growing Conditions
Tonight
49°F
Partly Cloudy
Partly cloudy, with a low around 49. North wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy | 8 mph N | 0% |
| Saturday | 63°F | Sunny | 2 to 6 mph NE | 0% |
| Saturday Night | 45°F | Partly Cloudy | 3 mph SE | 1% |
| Sunday | 64°F | Rain Showers | 2 to 6 mph SE | 78% |
| Sunday Night | 55°F | Rain Showers | 5 to 10 mph E | 86% |
| Monday | 64°F | Chance Rain Showers | 8 to 12 mph NE | 35% |
| Monday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 16% |
| Tuesday | 60°F | Partly Sunny | 13 mph NE | 11% |
| Tuesday Night | 49°F | Mostly Cloudy | 8 to 12 mph NE | 5% |
| Wednesday | 61°F | Partly Sunny | 12 to 16 mph NE | 10% |
| Wednesday Night | 49°F | Mostly Cloudy then Slight Chance Rain Showers | 9 to 13 mph NE | 21% |
| Thursday | 60°F | Chance Rain Showers | 15 mph NE | 29% |
| Thursday Night | 50°F | Chance Rain Showers | 9 to 14 mph NE | 37% |
| Friday | 63°F | Chance Rain Showers | 14 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harmony, RI
Last spring frost
Apr 25
First fall frost
Oct 19
Growing season
176 days
Hardiness zone
6b
Explore more for Harmony, RI: full frost dates · planting calendar · Rhode Island frost dates
Climate data from the nearest NOAA station, N Foster 1 E, Ri (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.