Crystal Lake, CT Weather & Growing Conditions
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 6 mph SW | 3% |
| Wednesday | 73°F | Sunny | 3 to 10 mph SW | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 8 mph SW | 2% |
| Thursday | 71°F | Chance Light Rain | 7 to 12 mph SW | 31% |
| Thursday Night | 61°F | Light Rain | 5 to 9 mph SW | 76% |
| Friday | 68°F | Rain | 5 mph S | 84% |
| Friday Night | 55°F | Rain | 6 mph SW | 83% |
| Saturday | 64°F | Light Rain Likely | 7 mph NW | 61% |
| Saturday Night | 41°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 | 35°F | Partly Cloudy | 6 mph W | 7% |
| Monday | 57°F | Slight Chance Light Rain | 6 to 14 mph W | 21% |
| Monday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 7 to 10 mph W | 20% |
| Tuesday | 57°F | Mostly Sunny | 10 to 14 mph SW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Crystal Lake, CT
Last spring frost
Apr 19
First fall frost
Oct 22
Growing season
186 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, Storrs, Ct (9.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.