Crystal Lake, CT Weather & Growing Conditions
Tonight
49°F
Partly Cloudy
Partly cloudy, with a low around 49. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Partly Cloudy | 6 mph S | 3% |
| Wednesday | 73°F | Sunny | 5 to 10 mph S | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 9 mph S | 2% |
| Thursday | 72°F | Chance Light Rain | 7 to 13 mph S | 38% |
| Thursday Night | 62°F | Light Rain | 5 to 10 mph S | 76% |
| Friday | 68°F | Rain | 5 mph S | 83% |
| Friday Night | 56°F | Rain | 6 mph SW | 82% |
| Saturday | 65°F | Light Rain Likely | 8 mph NW | 59% |
| Saturday Night | 42°F | Chance Light Rain | 7 mph NW | 33% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 6 to 9 mph W | 20% |
| Sunday Night | 36°F | Partly Cloudy | 6 mph W | 8% |
| Monday | 58°F | Slight Chance Light Rain | 6 to 15 mph W | 21% |
| Monday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 9 mph W | 20% |
| Tuesday | 58°F | Mostly Sunny | 8 to 15 mph SW | 9% |
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 Nov 4, 2026.