Connecticut frost advisories
There are no frost advisories in Connecticut right now. The last one was issued on November 1, 2026.
Lows in the mid 30s will allow frost to form and may harm sensitive plants.
Updated from the National Weather Service ยท lists refresh hourly; the live map loads current alerts directly from the NWS
Map data: NWS, OpenFreeMap, OpenStreetMap
Active frost advisories in Connecticut
None right now. Other active alerts in Connecticut: none.
Frost Advisories in Connecticut by year
Connecticut averaged 11.6 frost advisories per year from 2016 to 2025, and has had 13 so far in 2026. The most recent was issued on November 1, 2026.
Counties with the most frost advisories
| County | 2016โ2025 |
|---|---|
| New Haven County | 49 |
| Middlesex County | 47 |
| Fairfield County | 47 |
| New London County | 44 |
| Tolland County | 31 |
| Windham County | 30 |
| Litchfield County | 29 |
| Hartford County | 27 |
What a frost advisory means
Frost can form on clear, calm nights even when the air temperature stays a few degrees above freezing, typically with lows of 33 to 36ยฐF. Frost advisories are issued during the growing season.
More about frost advisories and the national map โ
What to do
- Cover tender plants with sheets or buckets overnight.