Crystal Lake, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Crystal Lake, a community in Tolland County, Connecticut.
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. Southwest wind around 7 mph.
7-day forecast for Crystal Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 7 mph SW | 3% |
| Wednesday | 72°F | Sunny | 5 to 10 mph SW | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 9 mph SW | 2% |
| Thursday | 70°F | Chance Light Rain | 8 to 13 mph S | 35% |
| Thursday Night | 61°F | Light Rain | 6 to 10 mph S | 75% |
| Friday | 67°F | Rain | 6 mph S | 83% |
| Friday Night | 55°F | Rain | 7 mph SW | 82% |
| Saturday | 63°F | Light Rain Likely | 7 mph NW | 60% |
| Saturday Night | 42°F | Chance Light Rain | 7 mph NW | 33% |
| Sunday | 58°F | Slight Chance Light Rain then Mostly Sunny | 6 to 9 mph W | 20% |
| Sunday Night | 36°F | Partly Cloudy | 7 mph W | 7% |
| Monday | 56°F | Slight Chance Light Rain | 7 to 15 mph W | 21% |
| Monday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 10 mph W | 20% |
| Tuesday | 56°F | Mostly Sunny | 10 to 15 mph SW | 9% |
Forecast source: National Weather Service (api.weather.gov) for Crystal Lake (41.933, -72.381). Updated through the day.
Growing snapshot for Crystal Lake
Last spring frost
Apr 19
First fall frost
Oct 22
Growing season
186 days
Hardiness zone
6b
More local growing data for Crystal Lake: nearby ZIP 06084 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Storrs, Ct (9.1 mi from Crystal Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.