Mystic, CT Weather & Growing Conditions
Today
70°F
Sunny
Sunny. High near 70, with temperatures falling to around 63 in the afternoon. Southwest wind 3 to 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Sunny | 3 to 9 mph SW | 0% |
| Tonight | 56°F | Partly Cloudy | 5 mph S | 0% |
| Thursday | 70°F | Mostly Cloudy then Chance Rain Showers | 5 to 12 mph SW | 32% |
| Thursday Night | 62°F | Showers And Thunderstorms | 8 mph SW | 76% |
| Friday | 68°F | Showers And Thunderstorms | 3 to 7 mph S | 98% |
| Friday Night | 55°F | Showers And Thunderstorms | 3 mph SW | 96% |
| Saturday | 66°F | Chance Rain Showers | 3 to 8 mph NW | 35% |
| Saturday Night | 44°F | Slight Chance Light Rain | 7 mph W | 20% |
| Sunday | 60°F | Slight Chance Light Rain then Mostly Sunny | 7 to 10 mph W | 20% |
| Sunday Night | 39°F | Partly Cloudy | 7 mph W | 5% |
| Monday | 57°F | Mostly Sunny then Slight Chance Light Rain | 8 to 13 mph W | 18% |
| Monday Night | 37°F | Slight Chance Light Rain then Mostly Clear | 7 mph W | 18% |
| Tuesday | 59°F | Sunny | 7 to 13 mph W | 7% |
| Tuesday Night | 37°F | Mostly Clear | 8 mph W | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mystic, CT
Last spring frost
Apr 11
First fall frost
Oct 31
Growing season
201 days
Hardiness zone
7a
Explore more for Mystic, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Westerly State Ap, Ri (6.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.