Fall in zone 9bPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 95519 (McKinleyville, CA)
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, Arcata Eureka AP, CA (3 miles away).
- Average last spring frostMar 850% chance of a 32°F freeze after this date
- Average first fall frostNov 3050% chance of a 32°F freeze by this date
- Growing season (frost-free)262 daysmedian, 32°F threshold
- USDA hardiness zone9b25 to 30°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 95519 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 February to March; fall September to October.
Fertilizer window
Lawn region: California coastal and valleys. Timing only; always follow the product label.
- Bermudagrass (warm-season): Spring: Several weeks after the lawn is fully green (April–May) (about Apr 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
- Lettuce: fall sowing Sep 21–Oct 19
- Lettuce: fall transplant Oct 5–26
- Spinach: fall sowing Oct 5–26
- Bok choy / Asian greens: fall sowing Oct 5–19
- Arugula: fall sowing Oct 5–Nov 2
- Mustard greens: fall sowing Oct 5–19
- Cilantro: fall sowing Oct 5–19
- Dill: fall sowing Oct 5–19
- Strawberry (plants): fall transplant Sep 21–Oct 19
Coming up in the next 3 weeks
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 30: 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) | Jan 13 |
| 50% (the "average" last frost) | Mar 8 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 15 |
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) | Nov 1 |
| 50% (the "average" first frost) | Nov 30 |
| 90% (late: most years have frozen by now) | Jan 4 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 24 | Nov 1 |
| 32°F (freeze) | Mar 8 | Nov 30 |
| 28°F (hard freeze) | Jan 20 | Dec 24 |
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 95519
Dates count from your average last spring frost (Mar 8) and first fall frost (Nov 30). 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 11–25 | Mar 15–29 (transplant) | Aug 3–31 (transplant) |
| Pepper (sweet and hot) | Dec 28–Jan 11 | Mar 22–Apr 5 (transplant) | Aug 10–31 (transplant) |
| Eggplant | Dec 28–Jan 11 | Mar 22–Apr 5 (transplant) | Aug 10–31 (transplant) |
| Tomatillo | Jan 11–25 | Mar 15–29 (transplant) | – |
| Lettuce | Jan 11–25 | Feb 15–Mar 8 (transplant) Feb 8–Mar 22 (sow outdoors) | Oct 5–26 (transplant) Sep 21–Oct 19 (sowing) |
| Spinach | – | Jan 25–Feb 15 (sow outdoors) | Oct 5–26 (sowing) |
| Kale | Jan 11–25 | Feb 8–22 (transplant) Feb 8–22 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Collards | Jan 11–25 | Feb 8–Mar 8 (transplant) Feb 8–Mar 8 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Broccoli | Dec 28–Jan 11 | Feb 8–22 (transplant) | Aug 24–Sep 21 (transplant) |
| Cabbage | Dec 28–Jan 11 | Feb 8–22 (transplant) | Aug 24–Sep 21 (transplant) |
| Cauliflower | Dec 28–Jan 11 | Feb 22–Mar 8 (transplant) | Aug 24–Sep 21 (transplant) |
| Brussels sprouts | Dec 14–28 | Feb 8–22 (transplant) | Aug 10–31 (transplant) |
| Kohlrabi | Jan 11–25 | Feb 8–22 (transplant) Feb 8–22 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Bok choy / Asian greens | – | Feb 8–22 (sow outdoors) | Oct 5–19 (sowing) |
| Arugula | – | Feb 8–Mar 8 (sow outdoors) | Oct 5–Nov 2 (sowing) |
| Mustard greens | – | Feb 8–Mar 1 (sow outdoors) | Oct 5–19 (sowing) |
| Swiss chard | Jan 25–Feb 8 | Feb 22–Mar 15 (transplant) Feb 22–Mar 22 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Beet | – | Feb 8–Mar 8 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Carrot | – | Feb 15–Mar 15 (sow outdoors) | Sep 7–21 (sowing) |
| Radish | – | Feb 1–Mar 15 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Turnip | – | Feb 8–Mar 1 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Parsnip | – | Feb 15–Mar 8 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 11–Feb 8 (sow outdoors) | Sep 7–21 (sowing) |
| Onion (bulbing) | Dec 14–28 | Jan 25–Feb 8 (transplant) | – |
| Green onion / scallion | – | Jan 25–Feb 22 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Leek | Dec 14–28 | Feb 8–22 (transplant) | – |
| Garlic | – | – | Oct 19–Nov 16 (sowing) |
| Shallot | – | Jan 25–Feb 8 (transplant) | Oct 19–Nov 16 (sowing) |
| Potato | – | Feb 8–22 (transplant) | Aug 10–24 (transplant) |
| Sweet potato | – | Mar 29–Apr 12 (transplant) | – |
| Sweet corn | – | Mar 15–29 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 15–29 (sow outdoors) | Sep 7–21 (sowing) |
| Bean, pole | – | Mar 15–29 (sow outdoors) | – |
| Lima bean | – | Mar 22–Apr 5 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 29–Apr 19 (sow outdoors) | – |
| Cucumber | Feb 8–15 | Mar 15–29 (transplant) Mar 15–29 (sow outdoors) | Sep 7–21 (sowing) |
| Summer squash / zucchini | Feb 8–15 | Mar 15–29 (transplant) Mar 15–29 (sow outdoors) | Sep 7–21 (sowing) |
| Winter squash | Feb 8–15 | Mar 15–29 (transplant) Mar 15–29 (sow outdoors) | – |
| Pumpkin | – | Mar 15–29 (sow outdoors) | – |
| Watermelon | Feb 8–15 | Mar 22–Apr 5 (transplant) Mar 22–Apr 5 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 8–15 | Mar 22–Apr 5 (transplant) Mar 22–Apr 5 (sow outdoors) | – |
| Okra | Jan 25–Feb 8 | Mar 22–Apr 5 (transplant) Mar 22–Apr 5 (sow outdoors) | – |
| Celery | Dec 14–28 | Mar 15–22 (transplant) | – |
| Basil | Jan 25–Feb 8 | Mar 15–29 (transplant) Mar 15–29 (sow outdoors) | – |
| Cilantro | – | Feb 22–Mar 22 (sow outdoors) | Oct 5–19 (sowing) |
| Parsley | Dec 28–Jan 11 | Feb 22–Mar 8 (transplant) Feb 15–Mar 8 (sow outdoors) | – |
| Dill | – | Mar 8–22 (sow outdoors) | Oct 5–19 (sowing) |
| Sunflower | – | Mar 8–22 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 8–22 (transplant) | – |
| Rhubarb (crowns) | – | Feb 8–22 (transplant) | – |
| Strawberry (plants) | – | Feb 8–22 (transplant) | Sep 21–Oct 19 (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: Arcata Eureka AP, CA (NOAA GHCN-Daily ID USW00024283), elevation 200 ft, 3.1 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Eureka WFO Woodley Island, CA | 12 mi | Feb 22 | Dec 7 |
| Orick Prairie Creek Park, CA | 28 mi | Apr 12 | Nov 6 |
| Scotia, CA | 33 mi | Feb 1 | Dec 19 |
The average last-frost dates of these stations span 73 days, a rough guide to local variation. See data sources & methods.
Frost questions for 95519
When is the last frost in 95519?
The average (50% chance) last spring freeze of 32°F for ZIP 95519 is March 8. For a more cautious planting date, use April 15, when only 1 year in 10 still sees a later freeze.
When is the first frost in 95519?
The average first fall freeze is November 30. In 1 year in 10 it comes by November 1.
What hardiness zone is 95519?
ZIP 95519 is in USDA zone 9b (25 to 30°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 95519 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
95521 Arcata 95524 Indianola 95570 Westhaven-Moonstone 95525 Blue Lake 95501 Eureka 95564 Samoa 95503 Pine Hills 95550
Other ZIP codes in Humboldt County
95501 95503 95511 95514 95521 95524 95525 95526 95528 95536 95537 95540 95542 95545 95546 95547 95549 95550 95551 95553 95554 95555 95556 95558 All Humboldt County frost dates · California 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.