Fall in zone 7aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 06606 (Bridgeport, CT)
Average last spring and first fall frost dates with 10%, 50% and 90% odds, from NOAA's 1991–2020 climate normals for the nearest weather station, Bridgeport Sikorsky Mem AP, CT (5 miles away).
- Average last spring frostApr 550% chance of a 32°F freeze after this date
- Average first fall frostNov 650% chance of a 32°F freeze by this date
- Growing season (frost-free)216 daysmedian, 32°F threshold
- USDA hardiness zone7a0 to 5°F avg. coldest night
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This week in your yard
As of Oct 18, 2026, from your frost dates, zone and soil temperature. Lawn timing · Vegetables · Pruning · Plants
Soil temperature now
2-inch depth
55°F 50–55°F
24-hour average · latest 49°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Millbrook 3 W (49 mi).
4-inch depth
58°F 55°F or warmer
24-hour average · latest 54°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Millbrook 3 W (49 mi).
Fall: Texas A&M AgriLife times fall pre-emergent (for winter weeds such as annual bluegrass) to soil cooling to about 70°F for several days. The 50–55°F band is the spring trigger. Always read and follow the product label.
7-day forecast and frost risk
The latest National Weather Service 7-day forecast and any Frost Advisory or Freeze Warning for 06606 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 58°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent (annual bluegrass, winter weeds): window open as soil cools through the 70s and 60s.
Fertilizer window
Lawn region: North (cool-season). Timing only; always follow the product label.
- Kentucky bluegrass (cool-season): Early fall: Around Labor Day (late August–September); Late fall: Late October–November, before the ground freezes; Late spring: Optional around Memorial Day. Avoid: Early-spring and midsummer feeding (pushes top growth, favors crabgrass).
Plant now
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 6: skip heavy pruning in the 6–8 weeks before it, because new growth may not harden off in time.
Spring-flowering shrubs are pruned right after their flowers fade, not by date. See the pruning guide.
Last spring frost odds
| Chance of a 32°F freeze after this date | Date |
|---|---|
| 90% (early: most years still freeze after this) | Mar 25 |
| 50% (the "average" last frost) | Apr 5 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 17 |
Most gardeners plant frost-tender crops (tomatoes, peppers, basil) after the 50% date, and closer to the 10% date for less risk.
First fall frost odds
| Chance the first 32°F freeze has happened by this date | Date |
|---|---|
| 10% (early: 1 year in 10 freezes this soon) | Oct 25 |
| 50% (the "average" first frost) | Nov 6 |
| 90% (late: most years have frozen by now) | Nov 20 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 16 | Oct 26 |
| 32°F (freeze) | Apr 5 | Nov 6 |
| 28°F (hard freeze) | Mar 26 | Nov 19 |
n/a means NOAA did not publish a date at that threshold for this station (usually because it rarely gets that cold).
Vegetable planting calendar for 06606
Dates count from your average last spring frost (Apr 5) and first fall frost (Nov 6). Half of years have a frost after the spring date, so give tender crops (tomatoes, peppers, squash) some slack.
| Crop | Start indoors | Spring planting | Fall planting |
|---|---|---|---|
| Tomato | Feb 8–22 | Apr 12–26 (transplant) | Jul 10–Aug 7 (transplant) |
| Pepper (sweet and hot) | Jan 25–Feb 8 | Apr 19–May 3 (transplant) | Jul 17–Aug 7 (transplant) |
| Eggplant | Jan 25–Feb 8 | Apr 19–May 3 (transplant) | Jul 17–Aug 7 (transplant) |
| Tomatillo | Feb 8–22 | Apr 12–26 (transplant) | – |
| Lettuce | Feb 8–22 | Mar 15–Apr 5 (transplant) Mar 8–Apr 19 (sow outdoors) | Sep 11–Oct 2 (transplant) Aug 28–Sep 25 (sowing) |
| Spinach | – | Feb 22–Mar 15 (sow outdoors) | Sep 11–Oct 2 (sowing) |
| Kale | Feb 8–22 | Mar 8–22 (transplant) Mar 8–22 (sow outdoors) | Aug 14–Sep 11 (transplant) Jul 31–Aug 28 (sowing) |
| Collards | Feb 8–22 | Mar 8–Apr 5 (transplant) Mar 8–Apr 5 (sow outdoors) | Aug 14–Sep 11 (transplant) Jul 31–Aug 28 (sowing) |
| Broccoli | Jan 25–Feb 8 | Mar 8–22 (transplant) | Jul 31–Aug 28 (transplant) |
| Cabbage | Jan 25–Feb 8 | Mar 8–22 (transplant) | Jul 31–Aug 28 (transplant) |
| Cauliflower | Jan 25–Feb 8 | Mar 22–Apr 5 (transplant) | Jul 31–Aug 28 (transplant) |
| Brussels sprouts | Jan 11–25 | Mar 8–22 (transplant) | Jul 17–Aug 7 (transplant) |
| Kohlrabi | Feb 8–22 | Mar 8–22 (transplant) Mar 8–22 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Bok choy / Asian greens | – | Mar 8–22 (sow outdoors) | Sep 11–25 (sowing) |
| Arugula | – | Mar 8–Apr 5 (sow outdoors) | Sep 11–Oct 9 (sowing) |
| Mustard greens | – | Mar 8–29 (sow outdoors) | Sep 11–25 (sowing) |
| Swiss chard | Feb 22–Mar 8 | Mar 22–Apr 12 (transplant) Mar 22–Apr 19 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Beet | – | Mar 8–Apr 5 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Carrot | – | Mar 15–Apr 12 (sow outdoors) | Aug 14–28 (sowing) |
| Radish | – | Mar 1–Apr 12 (sow outdoors) | Sep 25–Oct 9 (sowing) |
| Turnip | – | Mar 8–29 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Parsnip | – | Mar 15–Apr 5 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 8–Mar 8 (sow outdoors) | Aug 14–28 (sowing) |
| Onion (bulbing) | Jan 11–25 | Feb 22–Mar 8 (transplant) | – |
| Green onion / scallion | – | Feb 22–Mar 22 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Leek | Jan 11–25 | Mar 8–22 (transplant) | – |
| Garlic | – | – | Sep 25–Oct 23 (sowing) |
| Shallot | – | Feb 22–Mar 8 (transplant) | Sep 25–Oct 23 (sowing) |
| Potato | – | Mar 8–22 (transplant) | Jul 17–31 (transplant) |
| Sweet potato | – | Apr 26–May 10 (transplant) | – |
| Sweet corn | – | Apr 12–26 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 12–26 (sow outdoors) | Aug 14–28 (sowing) |
| Bean, pole | – | Apr 12–26 (sow outdoors) | – |
| Lima bean | – | Apr 19–May 3 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 26–May 17 (sow outdoors) | – |
| Cucumber | Mar 8–15 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | Aug 14–28 (sowing) |
| Summer squash / zucchini | Mar 8–15 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | Aug 14–28 (sowing) |
| Winter squash | Mar 8–15 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | – |
| Pumpkin | – | Apr 12–26 (sow outdoors) | – |
| Watermelon | Mar 8–15 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 8–15 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | – |
| Okra | Feb 22–Mar 8 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | – |
| Celery | Jan 11–25 | Apr 12–19 (transplant) | – |
| Basil | Feb 22–Mar 8 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | – |
| Cilantro | – | Mar 22–Apr 19 (sow outdoors) | Sep 11–25 (sowing) |
| Parsley | Jan 25–Feb 8 | Mar 22–Apr 5 (transplant) Mar 15–Apr 5 (sow outdoors) | – |
| Dill | – | Apr 5–19 (sow outdoors) | Sep 11–25 (sowing) |
| Sunflower | – | Apr 5–19 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 8–22 (transplant) | – |
| Rhubarb (crowns) | – | Mar 8–22 (transplant) | – |
| Strawberry (plants) | – | Mar 8–22 (transplant) | Aug 28–Sep 25 (transplant) |
Typical ranges from university extension planting calendars, adjusted to your frost dates. Probabilities, not guarantees. Fall windows that would overlap spring planting are left out, as are fall crops of frost-tender plants where the frost-free season is under 210 days.
Where these numbers come from
Station: Bridgeport Sikorsky Mem AP, CT (NOAA GHCN-Daily ID USW00094702), elevation 5 ft, 5.5 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Ansonia 1 NE, CT | 11 mi | Apr 25 | Oct 17 |
| New Haven Tweed AP, CT | 17 mi | Apr 17 | Oct 27 |
| Danbury, CT | 17 mi | Apr 20 | Oct 20 |
The average last-frost dates of these stations span 20 days, a rough guide to local variation. See data sources & methods.
Frost questions for 06606
When is the last frost in 06606?
The average (50% chance) last spring freeze of 32°F for ZIP 06606 is April 5. For a more cautious planting date, use April 17, when only 1 year in 10 still sees a later freeze.
When is the first frost in 06606?
The average first fall freeze is November 6. In 1 year in 10 it comes by October 25.
What hardiness zone is 06606?
ZIP 06606 is in USDA zone 7a (0 to 5°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 06606 right now?
This page shows the latest 2-inch and 4-inch soil temperature from the nearest public soil station (USDA SCAN, NOAA USCRN or TexMesonet), or a labeled estimate when no station is close, against the 50–55°F spring pre-emergent band.
Nearby ZIP codes
06825 Sacred Heart University 06610 Bridgeport 06608 Bridgeport 06607 Bridgeport 06605 Bridgeport 06604 Bridgeport 06614 Oronoque 06611 Trumbull Center
Other ZIP codes in Fairfield County
06468 06470 06482 06484 06604 06605 06607 06608 06610 06611 06612 06614 06615 06784 06801 06804 06807 06810 06811 06812 06820 06824 06825 06830 All Fairfield County frost dates · Connecticut frost dates
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- Freeze alerts
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Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.