Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 97458 (Myrtle Point, OR)
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, Powers, OR (11 miles away).
- Average last spring frostMar 2150% chance of a 32°F freeze after this date
- Average first fall frostNov 1450% chance of a 32°F freeze by this date
- Growing season (frost-free)241 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
53°F 50–55°F
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 Coos Bay 8 SW (22 mi).
4-inch depth
54°F 50–55°F
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 Coos Bay 8 SW (22 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 97458 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 54°F at 4 inches (estimated soil temperature, not a station reading). Fall pre-emergent window is mostly past. Next: spring, when soil reaches 50°F (typically 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
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 14: 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 16 |
| 50% (the "average" last frost) | Mar 21 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 12 |
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 21 |
| 50% (the "average" first frost) | Nov 14 |
| 90% (late: most years have frozen by now) | Dec 14 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 20 | Oct 22 |
| 32°F (freeze) | Mar 21 | Nov 14 |
| 28°F (hard freeze) | Feb 6 | Dec 9 |
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 97458
Dates count from your average last spring frost (Mar 21) and first fall frost (Nov 14). 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 24–Feb 7 | Mar 28–Apr 11 (transplant) | Jul 18–Aug 15 (transplant) |
| Pepper (sweet and hot) | Jan 10–24 | Apr 4–18 (transplant) | Jul 25–Aug 15 (transplant) |
| Eggplant | Jan 10–24 | Apr 4–18 (transplant) | Jul 25–Aug 15 (transplant) |
| Tomatillo | Jan 24–Feb 7 | Mar 28–Apr 11 (transplant) | – |
| Lettuce | Jan 24–Feb 7 | Feb 28–Mar 21 (transplant) Feb 21–Apr 4 (sow outdoors) | Sep 19–Oct 10 (transplant) Sep 5–Oct 3 (sowing) |
| Spinach | – | Feb 7–28 (sow outdoors) | Sep 19–Oct 10 (sowing) |
| Kale | Jan 24–Feb 7 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | Aug 22–Sep 19 (transplant) Aug 8–Sep 5 (sowing) |
| Collards | Jan 24–Feb 7 | Feb 21–Mar 21 (transplant) Feb 21–Mar 21 (sow outdoors) | Aug 22–Sep 19 (transplant) Aug 8–Sep 5 (sowing) |
| Broccoli | Jan 10–24 | Feb 21–Mar 7 (transplant) | Aug 8–Sep 5 (transplant) |
| Cabbage | Jan 10–24 | Feb 21–Mar 7 (transplant) | Aug 8–Sep 5 (transplant) |
| Cauliflower | Jan 10–24 | Mar 7–21 (transplant) | Aug 8–Sep 5 (transplant) |
| Brussels sprouts | Dec 27–Jan 10 | Feb 21–Mar 7 (transplant) | Jul 25–Aug 15 (transplant) |
| Kohlrabi | Jan 24–Feb 7 | Feb 21–Mar 7 (transplant) Feb 21–Mar 7 (sow outdoors) | Sep 5–19 (sowing) |
| Bok choy / Asian greens | – | Feb 21–Mar 7 (sow outdoors) | Sep 19–Oct 3 (sowing) |
| Arugula | – | Feb 21–Mar 21 (sow outdoors) | Sep 19–Oct 17 (sowing) |
| Mustard greens | – | Feb 21–Mar 14 (sow outdoors) | Sep 19–Oct 3 (sowing) |
| Swiss chard | Feb 7–21 | Mar 7–28 (transplant) Mar 7–Apr 4 (sow outdoors) | Sep 5–19 (sowing) |
| Beet | – | Feb 21–Mar 21 (sow outdoors) | Sep 5–19 (sowing) |
| Carrot | – | Feb 28–Mar 28 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Radish | – | Feb 14–Mar 28 (sow outdoors) | Oct 3–17 (sowing) |
| Turnip | – | Feb 21–Mar 14 (sow outdoors) | Sep 5–19 (sowing) |
| Parsnip | – | Feb 28–Mar 21 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 24–Feb 21 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Onion (bulbing) | Dec 27–Jan 10 | Feb 7–21 (transplant) | – |
| Green onion / scallion | – | Feb 7–Mar 7 (sow outdoors) | Sep 5–19 (sowing) |
| Leek | Dec 27–Jan 10 | Feb 21–Mar 7 (transplant) | – |
| Garlic | – | – | Oct 3–31 (sowing) |
| Shallot | – | Feb 7–21 (transplant) | Oct 3–31 (sowing) |
| Potato | – | Feb 21–Mar 7 (transplant) | Jul 25–Aug 8 (transplant) |
| Sweet potato | – | Apr 11–25 (transplant) | – |
| Sweet corn | – | Mar 28–Apr 11 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 28–Apr 11 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Bean, pole | – | Mar 28–Apr 11 (sow outdoors) | – |
| Lima bean | – | Apr 4–18 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 11–May 2 (sow outdoors) | – |
| Cucumber | Feb 21–28 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Summer squash / zucchini | Feb 21–28 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Winter squash | Feb 21–28 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | – |
| Pumpkin | – | Mar 28–Apr 11 (sow outdoors) | – |
| Watermelon | Feb 21–28 | Apr 4–18 (transplant) Apr 4–18 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 21–28 | Apr 4–18 (transplant) Apr 4–18 (sow outdoors) | – |
| Okra | Feb 7–21 | Apr 4–18 (transplant) Apr 4–18 (sow outdoors) | – |
| Celery | Dec 27–Jan 10 | Mar 28–Apr 4 (transplant) | – |
| Basil | Feb 7–21 | Mar 28–Apr 11 (transplant) Mar 28–Apr 11 (sow outdoors) | – |
| Cilantro | – | Mar 7–Apr 4 (sow outdoors) | Sep 19–Oct 3 (sowing) |
| Parsley | Jan 10–24 | Mar 7–21 (transplant) Feb 28–Mar 21 (sow outdoors) | – |
| Dill | – | Mar 21–Apr 4 (sow outdoors) | Sep 19–Oct 3 (sowing) |
| Sunflower | – | Mar 21–Apr 4 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 21–Mar 7 (transplant) | – |
| Rhubarb (crowns) | – | Feb 21–Mar 7 (transplant) | – |
| Strawberry (plants) | – | Feb 21–Mar 7 (transplant) | Sep 5–Oct 3 (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: Powers, OR (NOAA GHCN-Daily ID USC00356820), elevation 230 ft, 11.5 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Coquille City, OR | 14 mi | Mar 28 | Nov 6 |
| Bandon 2 NNE, OR | 21 mi | Mar 9 | Nov 27 |
| Coos Bay 8 SW, OR | 22 mi | Apr 15 | Oct 31 |
The average last-frost dates of these stations span 37 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97458
When is the last frost in 97458?
The average (50% chance) last spring freeze of 32°F for ZIP 97458 is March 21. For a more cautious planting date, use April 12, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97458?
The average first fall freeze is November 14. In 1 year in 10 it comes by October 21.
What hardiness zone is 97458?
ZIP 97458 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 97458 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
97414 97423 Coquille 97466 Powers 97416 97411 Bandon 97450 Langlois 97420 Coos Bay 97481
Other ZIP codes in Coos County
97411 97414 97420 97423 97449 97459 97466 All Coos County frost dates · Oregon frost dates
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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.