Fall in zone 6bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 02370 (Plymouth County, MA)
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, Hingham, MA (7 miles away).
- Average last spring frostApr 2550% chance of a 32°F freeze after this date
- Average first fall frostOct 2250% chance of a 32°F freeze by this date
- Growing season (frost-free)177 daysmedian, 32°F threshold
- USDA hardiness zone6b-5 to 0°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
57°F 55°F or warmer
24-hour average · latest 53°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Kingston 1 NW (55 mi), Kingston 1 W (55 mi).
4-inch depth
58°F 55°F or warmer
24-hour average · latest 56°F, as of Oct 18, 2:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Kingston 1 NW (55 mi), Kingston 1 W (55 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 02370 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
No vegetable planting windows are open this week.
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Oct 22: 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) | Apr 13 |
| 50% (the "average" last frost) | Apr 25 |
| 10% (cautious: only 1 year in 10 freezes later) | May 8 |
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 6 |
| 50% (the "average" first frost) | Oct 22 |
| 90% (late: most years have frozen by now) | Nov 5 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 6 | Oct 9 |
| 32°F (freeze) | Apr 25 | Oct 22 |
| 28°F (hard freeze) | Apr 10 | Nov 2 |
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 02370
Dates count from your average last spring frost (Apr 25) and first fall frost (Oct 22). 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 28–Mar 14 | May 2–16 (transplant) | – |
| Pepper (sweet and hot) | Feb 14–28 | May 9–23 (transplant) | – |
| Eggplant | Feb 14–28 | May 9–23 (transplant) | – |
| Tomatillo | Feb 28–Mar 14 | May 2–16 (transplant) | – |
| Lettuce | Feb 28–Mar 14 | Apr 4–25 (transplant) Mar 28–May 9 (sow outdoors) | Aug 27–Sep 17 (transplant) Aug 13–Sep 10 (sowing) |
| Spinach | – | Mar 14–Apr 4 (sow outdoors) | Aug 27–Sep 17 (sowing) |
| Kale | Feb 28–Mar 14 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | Jul 30–Aug 27 (transplant) Jul 16–Aug 13 (sowing) |
| Collards | Feb 28–Mar 14 | Mar 28–Apr 25 (transplant) Mar 28–Apr 25 (sow outdoors) | Jul 30–Aug 27 (transplant) Jul 16–Aug 13 (sowing) |
| Broccoli | Feb 14–28 | Mar 28–Apr 11 (transplant) | Jul 16–Aug 13 (transplant) |
| Cabbage | Feb 14–28 | Mar 28–Apr 11 (transplant) | Jul 16–Aug 13 (transplant) |
| Cauliflower | Feb 14–28 | Apr 11–25 (transplant) | Jul 16–Aug 13 (transplant) |
| Brussels sprouts | Jan 31–Feb 14 | Mar 28–Apr 11 (transplant) | Jul 2–23 (transplant) |
| Kohlrabi | Feb 28–Mar 14 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | Aug 13–27 (sowing) |
| Bok choy / Asian greens | – | Mar 28–Apr 11 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Arugula | – | Mar 28–Apr 25 (sow outdoors) | Aug 27–Sep 24 (sowing) |
| Mustard greens | – | Mar 28–Apr 18 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Swiss chard | Mar 14–28 | Apr 11–May 2 (transplant) Apr 11–May 9 (sow outdoors) | Aug 13–27 (sowing) |
| Beet | – | Mar 28–Apr 25 (sow outdoors) | Aug 13–27 (sowing) |
| Carrot | – | Apr 4–May 2 (sow outdoors) | Jul 30–Aug 13 (sowing) |
| Radish | – | Mar 21–May 2 (sow outdoors) | Sep 10–24 (sowing) |
| Turnip | – | Mar 28–Apr 18 (sow outdoors) | Aug 13–27 (sowing) |
| Parsnip | – | Apr 4–25 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 28–Mar 28 (sow outdoors) | Jul 30–Aug 13 (sowing) |
| Onion (bulbing) | Jan 31–Feb 14 | Mar 14–28 (transplant) | – |
| Green onion / scallion | – | Mar 14–Apr 11 (sow outdoors) | Aug 13–27 (sowing) |
| Leek | Jan 31–Feb 14 | Mar 28–Apr 11 (transplant) | – |
| Garlic | – | – | Sep 10–Oct 8 (sowing) |
| Shallot | – | Mar 14–28 (transplant) | Sep 10–Oct 8 (sowing) |
| Potato | – | Mar 28–Apr 11 (transplant) | Jul 2–16 (transplant) |
| Sweet potato | – | May 16–30 (transplant) | – |
| Sweet corn | – | May 2–16 (sow outdoors) | – |
| Bean, bush (snap) | – | May 2–16 (sow outdoors) | – |
| Bean, pole | – | May 2–16 (sow outdoors) | – |
| Lima bean | – | May 9–23 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 16–Jun 6 (sow outdoors) | – |
| Cucumber | Mar 28–Apr 4 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Summer squash / zucchini | Mar 28–Apr 4 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Winter squash | Mar 28–Apr 4 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Pumpkin | – | May 2–16 (sow outdoors) | – |
| Watermelon | Mar 28–Apr 4 | May 9–23 (transplant) May 9–23 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 28–Apr 4 | May 9–23 (transplant) May 9–23 (sow outdoors) | – |
| Okra | Mar 14–28 | May 9–23 (transplant) May 9–23 (sow outdoors) | – |
| Celery | Jan 31–Feb 14 | May 2–9 (transplant) | – |
| Basil | Mar 14–28 | May 2–16 (transplant) May 2–16 (sow outdoors) | – |
| Cilantro | – | Apr 11–May 9 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Parsley | Feb 14–28 | Apr 11–25 (transplant) Apr 4–25 (sow outdoors) | – |
| Dill | – | Apr 25–May 9 (sow outdoors) | Aug 27–Sep 10 (sowing) |
| Sunflower | – | Apr 25–May 9 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 28–Apr 11 (transplant) | – |
| Rhubarb (crowns) | – | Mar 28–Apr 11 (transplant) | – |
| Strawberry (plants) | – | Mar 28–Apr 11 (transplant) | Aug 13–Sep 10 (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: Hingham, MA (NOAA GHCN-Daily ID USC00193624), elevation 35 ft, 6.8 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Brockton, MA | 8 mi | Apr 22 | Oct 19 |
| Blue Hill Coop, MA | 12 mi | Apr 18 | Oct 26 |
| Blue Hill, MA | 12 mi | Apr 19 | Oct 24 |
The average last-frost dates of these stations span 7 days, a rough guide to local variation. See data sources & methods.
Frost questions for 02370
When is the last frost in 02370?
The average (50% chance) last spring freeze of 32°F for ZIP 02370 is April 25. For a more cautious planting date, use May 8, when only 1 year in 10 still sees a later freeze.
When is the first frost in 02370?
The average first fall freeze is October 22. In 1 year in 10 it comes by October 6.
What hardiness zone is 02370?
ZIP 02370 is in USDA zone 6b (-5 to 0°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 02370 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
02351 Abington 02339 02190 Weymouth Town 02382 02343 Holbrook 02061 02302 Brockton 02188 Weymouth Town
Other ZIP codes in Plymouth County
02043 02045 02047 02050 02061 02066 02301 02302 02324 02325 02330 02332 02333 02338 02339 02341 02346 02347 02350 02351 02359 02360 02364 02366 All Plymouth County frost dates · Massachusetts frost dates
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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- 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.