Mashantucket, CT Weather & Growing Conditions
This Afternoon
70°F
Mostly Sunny
Mostly sunny. High near 70, with temperatures falling to around 66 in the afternoon. East wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Sunny | 7 mph E | 0% |
| Tonight | 49°F | Partly Cloudy | 5 mph E | 0% |
| Sunday | 66°F | Rain | 3 to 7 mph E | 91% |
| Sunday Night | 52°F | Rain | 5 to 8 mph NE | 91% |
| Monday | 67°F | Chance Light Rain then Partly Sunny | 7 to 12 mph NE | 35% |
| Monday Night | 47°F | Mostly Cloudy | 3 to 8 mph NE | 5% |
| Tuesday | 63°F | Mostly Cloudy | 12 mph NE | 7% |
| Tuesday Night | 46°F | Mostly Cloudy | 7 to 12 mph NE | 5% |
| Wednesday | 65°F | Partly Sunny | 12 to 16 mph NE | 4% |
| Wednesday Night | 47°F | Chance Rain Showers | 12 to 15 mph NE | 26% |
| Thursday | 64°F | Chance Rain Showers | 18 mph NE | 33% |
| Thursday Night | 47°F | Chance Rain Showers | 13 to 17 mph NE | 37% |
| Friday | 64°F | Chance Rain Showers | 17 mph N | 34% |
| Friday Night | 47°F | Chance Rain Showers | 13 to 16 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mashantucket, CT
Last spring frost
Apr 8
First fall frost
Nov 2
Growing season
207 days
Hardiness zone
6b
Explore more for Mashantucket, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Groton, Ct (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.