Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 98036 (Lynnwood, WA)
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, Everett Snohomish AP, WA (7 miles away).
- Average last spring frostMar 950% chance of a 32°F freeze after this date
- Average first fall frostNov 1750% chance of a 32°F freeze by this date
- Growing season (frost-free)250 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°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 98036 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 March to April.
Fertilizer window
Lawn region: Pacific Northwest (west of the Cascades). Timing only; always follow the product label.
- Perennial ryegrass (cool-season): Early fall: September; Late fall: October–November; Overseeded Bermuda: Light feeding once the winter rye is established, if needed. Avoid: Summer feeding.
Plant now
- Arugula: fall sowing Sep 22–Oct 20
- Radish: fall sowing Oct 6–20
- Garlic: fall sowing Oct 6–Nov 3
- Shallot: fall sowing Oct 6–Nov 3
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 17: 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) | Feb 15 |
| 50% (the "average" last frost) | Mar 9 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 29 |
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 31 |
| 50% (the "average" first frost) | Nov 17 |
| 90% (late: most years have frozen by now) | Dec 7 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 3 | Nov 2 |
| 32°F (freeze) | Mar 9 | Nov 17 |
| 28°F (hard freeze) | Feb 13 | Dec 6 |
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 98036
Dates count from your average last spring frost (Mar 9) and first fall frost (Nov 17). 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 | Jan 12–26 | Mar 16–30 (transplant) | Jul 21–Aug 18 (transplant) |
| Pepper (sweet and hot) | Dec 29–Jan 12 | Mar 23–Apr 6 (transplant) | Jul 28–Aug 18 (transplant) |
| Eggplant | Dec 29–Jan 12 | Mar 23–Apr 6 (transplant) | Jul 28–Aug 18 (transplant) |
| Tomatillo | Jan 12–26 | Mar 16–30 (transplant) | – |
| Lettuce | Jan 12–26 | Feb 16–Mar 9 (transplant) Feb 9–Mar 23 (sow outdoors) | Sep 22–Oct 13 (transplant) Sep 8–Oct 6 (sowing) |
| Spinach | – | Jan 26–Feb 16 (sow outdoors) | Sep 22–Oct 13 (sowing) |
| Kale | Jan 12–26 | Feb 9–23 (transplant) Feb 9–23 (sow outdoors) | Aug 25–Sep 22 (transplant) Aug 11–Sep 8 (sowing) |
| Collards | Jan 12–26 | Feb 9–Mar 9 (transplant) Feb 9–Mar 9 (sow outdoors) | Aug 25–Sep 22 (transplant) Aug 11–Sep 8 (sowing) |
| Broccoli | Dec 29–Jan 12 | Feb 9–23 (transplant) | Aug 11–Sep 8 (transplant) |
| Cabbage | Dec 29–Jan 12 | Feb 9–23 (transplant) | Aug 11–Sep 8 (transplant) |
| Cauliflower | Dec 29–Jan 12 | Feb 23–Mar 9 (transplant) | Aug 11–Sep 8 (transplant) |
| Brussels sprouts | Dec 15–29 | Feb 9–23 (transplant) | Jul 28–Aug 18 (transplant) |
| Kohlrabi | Jan 12–26 | Feb 9–23 (transplant) Feb 9–23 (sow outdoors) | Sep 8–22 (sowing) |
| Bok choy / Asian greens | – | Feb 9–23 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Arugula | – | Feb 9–Mar 9 (sow outdoors) | Sep 22–Oct 20 (sowing) |
| Mustard greens | – | Feb 9–Mar 2 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Swiss chard | Jan 26–Feb 9 | Feb 23–Mar 16 (transplant) Feb 23–Mar 23 (sow outdoors) | Sep 8–22 (sowing) |
| Beet | – | Feb 9–Mar 9 (sow outdoors) | Sep 8–22 (sowing) |
| Carrot | – | Feb 16–Mar 16 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Radish | – | Feb 2–Mar 16 (sow outdoors) | Oct 6–20 (sowing) |
| Turnip | – | Feb 9–Mar 2 (sow outdoors) | Sep 8–22 (sowing) |
| Parsnip | – | Feb 16–Mar 9 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 12–Feb 9 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Onion (bulbing) | Dec 15–29 | Jan 26–Feb 9 (transplant) | – |
| Green onion / scallion | – | Jan 26–Feb 23 (sow outdoors) | Sep 8–22 (sowing) |
| Leek | Dec 15–29 | Feb 9–23 (transplant) | – |
| Garlic | – | – | Oct 6–Nov 3 (sowing) |
| Shallot | – | Jan 26–Feb 9 (transplant) | Oct 6–Nov 3 (sowing) |
| Potato | – | Feb 9–23 (transplant) | Jul 28–Aug 11 (transplant) |
| Sweet potato | – | Mar 30–Apr 13 (transplant) | – |
| Sweet corn | – | Mar 16–30 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 16–30 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Bean, pole | – | Mar 16–30 (sow outdoors) | – |
| Lima bean | – | Mar 23–Apr 6 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 30–Apr 20 (sow outdoors) | – |
| Cucumber | Feb 9–16 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Summer squash / zucchini | Feb 9–16 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Winter squash | Feb 9–16 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | – |
| Pumpkin | – | Mar 16–30 (sow outdoors) | – |
| Watermelon | Feb 9–16 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 9–16 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | – |
| Okra | Jan 26–Feb 9 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | – |
| Celery | Dec 15–29 | Mar 16–23 (transplant) | – |
| Basil | Jan 26–Feb 9 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | – |
| Cilantro | – | Feb 23–Mar 23 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Parsley | Dec 29–Jan 12 | Feb 23–Mar 9 (transplant) Feb 16–Mar 9 (sow outdoors) | – |
| Dill | – | Mar 9–23 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Sunflower | – | Mar 9–23 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 9–23 (transplant) | – |
| Rhubarb (crowns) | – | Feb 9–23 (transplant) | – |
| Strawberry (plants) | – | Feb 9–23 (transplant) | Sep 8–Oct 6 (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: Everett Snohomish AP, WA (NOAA GHCN-Daily ID USW00024222), elevation 606 ft, 6.8 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Seattle Sand Pt Wsfo, WA | 9 mi | Mar 8 | Nov 23 |
| Everett, WA | 12 mi | Mar 24 | Nov 2 |
| Monroe, WA | 13 mi | Apr 17 | Oct 23 |
The average last-frost dates of these stations span 40 days, a rough guide to local variation. See data sources & methods.
Frost questions for 98036
When is the last frost in 98036?
The average (50% chance) last spring freeze of 32°F for ZIP 98036 is March 9. For a more cautious planting date, use March 29, when only 1 year in 10 still sees a later freeze.
When is the first frost in 98036?
The average first fall freeze is November 17. In 1 year in 10 it comes by October 31.
What hardiness zone is 98036?
ZIP 98036 is in USDA zone 9a (20 to 25°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 98036 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
98043 Mountlake Terrace 98037 Lynnwood 98026 Edmonds 98087 North Lynnwood 98021 Bothell 98155 Shoreline 98012 Mill Creek 98020 Edmonds
Other ZIP codes in Snohomish County
98012 98020 98021 98026 98037 98043 98087 98201 98203 98204 98207 98208 98223 98241 98251 98252 98256 98258 98270 98271 98272 98275 98290 98292 All Snohomish County frost dates · Washington 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.