Frost dates for Bridgeport, CT
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
April 5
typical year
Safe to plant
April 17
frost is over in 9 of 10 years
First fall frost
November 6
typical year
Growing season
216 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | Mar 8 – 22 | – |
| Spinach | – | Feb 22 – Mar 15 | Sep 11 – 25 |
| Lettuce | – | Mar 8 – 29 | Sep 11 – 25 |
| Radishes | – | Mar 8 – Apr 19 | Sep 25 – Oct 9 |
| Onions | – | Mar 8 – 22 | – |
| Potatoes | – | Mar 15 – 29 | – |
| Carrots | – | Mar 15 – Apr 5 | Aug 14 – 28 |
| Beets | – | Mar 8 – 22 | Aug 28 – Sep 11 |
| Kale | Jan 25 – Feb 8 | Mar 8 – 22 | Aug 28 – Sep 11 |
| Broccoli | Jan 25 – Feb 8 | Mar 22 – Apr 5 | Aug 28 – Sep 11 |
| Cabbage | Jan 11 – 25 | Mar 8 – 22 | Aug 28 – Sep 11 |
| Garlic | – | – | Sep 25 – Oct 16 |
| Warm-season crops | |||
| Tomatoes | Feb 20 – Mar 6 | Apr 17 – May 1 | – |
| Peppers | Feb 13 – 27 | Apr 24 – May 8 | – |
| Cucumbers | – | Apr 17 – May 8 | – |
| Zucchini | – | Apr 17 – May 15 | – |
| Pumpkins | – | Apr 17 – May 8 | – |
| Green beans | – | Apr 17 – Aug 28 | – |
| Sweet corn | – | Apr 17 – May 15 | – |
| Basil | Mar 13 – 27 | Apr 24 – May 1 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | April 17 | April 5 | March 25 |
| Fall frost before | October 25 | November 6 | November 20 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around March 26 (April 6 in a late year), and the first one in fall around November 19.
Towns that use these dates
This is the nearest NOAA station with frost records for 2 towns.
Bridgeport, Milford
Where these dates come from
NOAA weather station BRIDGEPORT SIKORSKY MEM AP, CT US (USW00094702), 1991–2020 climate normals. It's the nearest station for 13 zip codes, all within 8 miles:
06460, 06461, 06604, 06605, 06606, 06607, 06608, 06610, 06614, 06615, 06824, 06825, 06890
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.