Crystal Lake, CT Weather & Growing Conditions
This Afternoon
67°F
Partly Sunny
Partly sunny, with a high near 67. Northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 67°F | Partly Sunny | 2 mph NW | 0% |
| Tonight | 48°F | Partly Cloudy | 2 to 6 mph SE | 3% |
| Sunday | 61°F | Rain Showers | 3 to 8 mph SE | 100% |
| Sunday Night | 52°F | Rain Showers | 5 to 9 mph NE | 92% |
| Monday | 67°F | Patchy Fog then Partly Sunny | 7 to 12 mph N | 6% |
| Monday Night | 47°F | Mostly Cloudy | 8 mph NE | 3% |
| Tuesday | 63°F | Partly Sunny | 9 mph NE | 5% |
| Tuesday Night | 46°F | Mostly Cloudy | 6 to 12 mph NE | 3% |
| Wednesday | 65°F | Partly Sunny | 12 to 16 mph NE | 3% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 9 to 15 mph NE | 17% |
| Thursday | 64°F | Chance Rain Showers | 17 mph NE | 25% |
| Thursday Night | 47°F | Chance Rain Showers | 15 to 18 mph NE | 35% |
| Friday | 64°F | Chance Rain Showers | 16 to 20 mph N | 37% |
| Friday Night | 48°F | Chance Rain Showers | 20 mph N | 37% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Crystal Lake, CT
Last spring frost
May 7
First fall frost
Oct 12
Growing season
159 days
Hardiness zone
6b
Explore more for Crystal Lake, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Staffordville, Ct (11.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.