Fall in zone 7aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 21795 (Williamsport, MD)
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, Hagerstown Washington Co AP, MD (10 miles away).
- Average last spring frostApr 750% chance of a 32°F freeze after this date
- Average first fall frostNov 450% chance of a 32°F freeze by this date
- Growing season (frost-free)209 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
No soil station with a fresh reading within 62 miles.
4-inch depth
No soil station with a fresh reading within 62 miles.
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 21795 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring early March to early April; fall late August to mid-September.
Fertilizer window
Lawn region: Transition zone. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about May 23 here, using green-up about 3–4 weeks after your average last frost); Summer: Every 4–6 weeks through mid-August (heaviest feeder of the group); Late: Light, low-nitrogen/high-potassium feeding about 4 weeks before first frost, or skip. Avoid: Heavy late-fall nitrogen (linked to spring dead spot).
- Tall fescue (cool-season): Early fall: September (main feeding); Late fall: November, while still green; Late winter: Optional light feeding February–March. Avoid: Feeding after mid-spring and through summer in the transition zone (stress and brown patch).
Plant now
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 4: 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 7 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 21 |
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 22 |
| 50% (the "average" first frost) | Nov 4 |
| 90% (late: most years have frozen by now) | Nov 17 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 19 | Oct 23 |
| 32°F (freeze) | Apr 7 | Nov 4 |
| 28°F (hard freeze) | Mar 28 | Nov 14 |
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 21795
Dates count from your average last spring frost (Apr 7) and first fall frost (Nov 4). 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 10–24 | Apr 14–28 (transplant) | – |
| Pepper (sweet and hot) | Jan 27–Feb 10 | Apr 21–May 5 (transplant) | – |
| Eggplant | Jan 27–Feb 10 | Apr 21–May 5 (transplant) | – |
| Tomatillo | Feb 10–24 | Apr 14–28 (transplant) | – |
| Lettuce | Feb 10–24 | Mar 17–Apr 7 (transplant) Mar 10–Apr 21 (sow outdoors) | Sep 9–30 (transplant) Aug 26–Sep 23 (sowing) |
| Spinach | – | Feb 24–Mar 17 (sow outdoors) | Sep 9–30 (sowing) |
| Kale | Feb 10–24 | Mar 10–24 (transplant) Mar 10–24 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Collards | Feb 10–24 | Mar 10–Apr 7 (transplant) Mar 10–Apr 7 (sow outdoors) | Aug 12–Sep 9 (transplant) Jul 29–Aug 26 (sowing) |
| Broccoli | Jan 27–Feb 10 | Mar 10–24 (transplant) | Jul 29–Aug 26 (transplant) |
| Cabbage | Jan 27–Feb 10 | Mar 10–24 (transplant) | Jul 29–Aug 26 (transplant) |
| Cauliflower | Jan 27–Feb 10 | Mar 24–Apr 7 (transplant) | Jul 29–Aug 26 (transplant) |
| Brussels sprouts | Jan 13–27 | Mar 10–24 (transplant) | Jul 15–Aug 5 (transplant) |
| Kohlrabi | Feb 10–24 | Mar 10–24 (transplant) Mar 10–24 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Bok choy / Asian greens | – | Mar 10–24 (sow outdoors) | Sep 9–23 (sowing) |
| Arugula | – | Mar 10–Apr 7 (sow outdoors) | Sep 9–Oct 7 (sowing) |
| Mustard greens | – | Mar 10–31 (sow outdoors) | Sep 9–23 (sowing) |
| Swiss chard | Feb 24–Mar 10 | Mar 24–Apr 14 (transplant) Mar 24–Apr 21 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Beet | – | Mar 10–Apr 7 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Carrot | – | Mar 17–Apr 14 (sow outdoors) | Aug 12–26 (sowing) |
| Radish | – | Mar 3–Apr 14 (sow outdoors) | Sep 23–Oct 7 (sowing) |
| Turnip | – | Mar 10–31 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Parsnip | – | Mar 17–Apr 7 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 10–Mar 10 (sow outdoors) | Aug 12–26 (sowing) |
| Onion (bulbing) | Jan 13–27 | Feb 24–Mar 10 (transplant) | – |
| Green onion / scallion | – | Feb 24–Mar 24 (sow outdoors) | Aug 26–Sep 9 (sowing) |
| Leek | Jan 13–27 | Mar 10–24 (transplant) | – |
| Garlic | – | – | Sep 23–Oct 21 (sowing) |
| Shallot | – | Feb 24–Mar 10 (transplant) | Sep 23–Oct 21 (sowing) |
| Potato | – | Mar 10–24 (transplant) | Jul 15–29 (transplant) |
| Sweet potato | – | Apr 28–May 12 (transplant) | – |
| Sweet corn | – | Apr 14–28 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 14–28 (sow outdoors) | – |
| Bean, pole | – | Apr 14–28 (sow outdoors) | – |
| Lima bean | – | Apr 21–May 5 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 28–May 19 (sow outdoors) | – |
| Cucumber | Mar 10–17 | Apr 14–28 (transplant) Apr 14–28 (sow outdoors) | – |
| Summer squash / zucchini | Mar 10–17 | Apr 14–28 (transplant) Apr 14–28 (sow outdoors) | – |
| Winter squash | Mar 10–17 | Apr 14–28 (transplant) Apr 14–28 (sow outdoors) | – |
| Pumpkin | – | Apr 14–28 (sow outdoors) | – |
| Watermelon | Mar 10–17 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 10–17 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | – |
| Okra | Feb 24–Mar 10 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | – |
| Celery | Jan 13–27 | Apr 14–21 (transplant) | – |
| Basil | Feb 24–Mar 10 | Apr 14–28 (transplant) Apr 14–28 (sow outdoors) | – |
| Cilantro | – | Mar 24–Apr 21 (sow outdoors) | Sep 9–23 (sowing) |
| Parsley | Jan 27–Feb 10 | Mar 24–Apr 7 (transplant) Mar 17–Apr 7 (sow outdoors) | – |
| Dill | – | Apr 7–21 (sow outdoors) | Sep 9–23 (sowing) |
| Sunflower | – | Apr 7–21 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 10–24 (transplant) | – |
| Rhubarb (crowns) | – | Mar 10–24 (transplant) | – |
| Strawberry (plants) | – | Mar 10–24 (transplant) | Aug 26–Sep 23 (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: Hagerstown Washington Co AP, MD (NOAA GHCN-Daily ID USW00093706), elevation 698 ft, 10.1 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Hagerstown 1 E, MD | 8 mi | Apr 11 | Oct 28 |
| Martinsburg 2, WV | 11 mi | Apr 17 | Oct 23 |
| Sharpsburg 5 S, MD | 14 mi | Apr 26 | Oct 18 |
The average last-frost dates of these stations span 19 days, a rough guide to local variation. See data sources & methods.
Frost questions for 21795
When is the last frost in 21795?
The average (50% chance) last spring freeze of 32°F for ZIP 21795 is April 7. For a more cautious planting date, use April 21, when only 1 year in 10 still sees a later freeze.
When is the first frost in 21795?
The average first fall freeze is November 4. In 1 year in 10 it comes by October 22.
What hardiness zone is 21795?
ZIP 21795 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 21795 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
25419 Falling Waters 21781 St. James 21733 St. James 21740 Hagerstown 21746 21734 Funkstown 25404 21722 Charlton
Other ZIP codes in Washington County
21711 21713 21715 21719 21722 21733 21734 21740 21742 21746 21750 21756 21767 21779 21781 21782 21783 All Washington County frost dates · Maryland frost dates
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