Waterbury, CT Frost Dates
The last spring frost in Waterbury usually comes around April 26 and the first fall frost around October 16.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | April 26 | October 16 |
| Hard freeze, 28°F | April 10 | October 30 |
Growing season: about 175 days.
Frequently asked questions
When is the last frost in Waterbury, CT?
The median date of the last spring frost (32°F) is April 26. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past April 26 lowers the risk for tender plants.
When is the first frost in Waterbury?
The median date of the first fall frost (32°F) is October 16, and a hard freeze (28°F) usually follows around October 30.
How long is the growing season in Waterbury?
About 175 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00054788. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.