Fall in zone 9aPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 97430 (Lane County, 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, Mapleton, OR (11 miles away).
- Average last spring frostFeb 1550% chance of a 32°F freeze after this date
- Average first fall frostDec 950% chance of a 32°F freeze by this date
- Growing season (frost-free)306 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°F avg. coldest night
Get The Dial for 97430
Frost and freeze alerts from the NWS forecast for 97430, the spring soil-temperature heads-up for pre-emergent, and a short weekly yard-timing email.
- Freeze alerts
- Soil-temp heads-up
- Weekly yard to-dos
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.
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
58°F 55°F or warmer
24-hour average · latest 58°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Corvallis 10 SSW (26 mi).
4-inch depth
58°F 55°F or warmer
24-hour average · latest 58°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Corvallis 10 SSW (26 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 97430 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: 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
- Lettuce: fall sowing Sep 30–Oct 28
- Lettuce: fall transplant Oct 14–Nov 4
- Spinach: fall sowing Oct 14–Nov 4
- Bok choy / Asian greens: fall sowing Oct 14–28
- Arugula: fall sowing Oct 14–Nov 11
- Mustard greens: fall sowing Oct 14–28
- Cilantro: fall sowing Oct 14–28
- Dill: fall sowing Oct 14–28
- Strawberry (plants): fall transplant Sep 30–Oct 28
Coming up in the next 3 weeks
- Radish: fall sowing Oct 28–Nov 11
- Garlic: fall sowing Oct 28–Nov 25
- Shallot: fall sowing Oct 28–Nov 25
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Dec 9: 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) | Dec 23 (prior Dec) |
| 50% (the "average" last frost) | Feb 15 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 19 |
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 9 |
| 50% (the "average" first frost) | Dec 9 |
| 90% (late: most years have frozen by now) | Jan 24 (next year) |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 30 | Nov 16 |
| 32°F (freeze) | Feb 15 | Dec 9 |
| 28°F (hard freeze) | Jan 6 | Dec 25 |
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 97430
Dates count from your average last spring frost (Feb 15) and first fall frost (Dec 9). 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 | Dec 21–Jan 4 | Feb 22–Mar 8 (transplant) | Aug 12–Sep 9 (transplant) |
| Pepper (sweet and hot) | Dec 7–21 | Mar 1–15 (transplant) | Aug 19–Sep 9 (transplant) |
| Eggplant | Dec 7–21 | Mar 1–15 (transplant) | Aug 19–Sep 9 (transplant) |
| Tomatillo | Dec 21–Jan 4 | Feb 22–Mar 8 (transplant) | – |
| Lettuce | Dec 21–Jan 4 | Jan 25–Feb 15 (transplant) Jan 18–Mar 1 (sow outdoors) | Oct 14–Nov 4 (transplant) Sep 30–Oct 28 (sowing) |
| Spinach | – | Jan 4–25 (sow outdoors) | Oct 14–Nov 4 (sowing) |
| Kale | Dec 21–Jan 4 | Jan 18–Feb 1 (transplant) Jan 18–Feb 1 (sow outdoors) | Sep 16–Oct 14 (transplant) Sep 2–30 (sowing) |
| Collards | Dec 21–Jan 4 | Jan 18–Feb 15 (transplant) Jan 18–Feb 15 (sow outdoors) | Sep 16–Oct 14 (transplant) Sep 2–30 (sowing) |
| Broccoli | Dec 7–21 | Jan 18–Feb 1 (transplant) | Sep 2–30 (transplant) |
| Cabbage | Dec 7–21 | Jan 18–Feb 1 (transplant) | Sep 2–30 (transplant) |
| Cauliflower | Dec 7–21 | Feb 1–15 (transplant) | Sep 2–30 (transplant) |
| Brussels sprouts | Nov 23–Dec 7 | Jan 18–Feb 1 (transplant) | Aug 19–Sep 9 (transplant) |
| Kohlrabi | Dec 21–Jan 4 | Jan 18–Feb 1 (transplant) Jan 18–Feb 1 (sow outdoors) | Sep 30–Oct 14 (sowing) |
| Bok choy / Asian greens | – | Jan 18–Feb 1 (sow outdoors) | Oct 14–28 (sowing) |
| Arugula | – | Jan 18–Feb 15 (sow outdoors) | Oct 14–Nov 11 (sowing) |
| Mustard greens | – | Jan 18–Feb 8 (sow outdoors) | Oct 14–28 (sowing) |
| Swiss chard | Jan 4–18 | Feb 1–22 (transplant) Feb 1–Mar 1 (sow outdoors) | Sep 30–Oct 14 (sowing) |
| Beet | – | Jan 18–Feb 15 (sow outdoors) | Sep 30–Oct 14 (sowing) |
| Carrot | – | Jan 25–Feb 22 (sow outdoors) | Sep 16–30 (sowing) |
| Radish | – | Jan 11–Feb 22 (sow outdoors) | Oct 28–Nov 11 (sowing) |
| Turnip | – | Jan 18–Feb 8 (sow outdoors) | Sep 30–Oct 14 (sowing) |
| Parsnip | – | Jan 25–Feb 15 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Dec 21–Jan 18 (sow outdoors) | Sep 16–30 (sowing) |
| Onion (bulbing) | Nov 23–Dec 7 | Jan 4–18 (transplant) | – |
| Green onion / scallion | – | Jan 4–Feb 1 (sow outdoors) | Sep 30–Oct 14 (sowing) |
| Leek | Nov 23–Dec 7 | Jan 18–Feb 1 (transplant) | – |
| Garlic | – | – | Oct 28–Nov 25 (sowing) |
| Shallot | – | Jan 4–18 (transplant) | Oct 28–Nov 25 (sowing) |
| Potato | – | Jan 18–Feb 1 (transplant) | Aug 19–Sep 2 (transplant) |
| Sweet potato | – | Mar 8–22 (transplant) | – |
| Sweet corn | – | Feb 22–Mar 8 (sow outdoors) | – |
| Bean, bush (snap) | – | Feb 22–Mar 8 (sow outdoors) | Sep 16–30 (sowing) |
| Bean, pole | – | Feb 22–Mar 8 (sow outdoors) | – |
| Lima bean | – | Mar 1–15 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 8–29 (sow outdoors) | – |
| Cucumber | Jan 18–25 | Feb 22–Mar 8 (transplant) Feb 22–Mar 8 (sow outdoors) | Sep 16–30 (sowing) |
| Summer squash / zucchini | Jan 18–25 | Feb 22–Mar 8 (transplant) Feb 22–Mar 8 (sow outdoors) | Sep 16–30 (sowing) |
| Winter squash | Jan 18–25 | Feb 22–Mar 8 (transplant) Feb 22–Mar 8 (sow outdoors) | – |
| Pumpkin | – | Feb 22–Mar 8 (sow outdoors) | – |
| Watermelon | Jan 18–25 | Mar 1–15 (transplant) Mar 1–15 (sow outdoors) | – |
| Cantaloupe / muskmelon | Jan 18–25 | Mar 1–15 (transplant) Mar 1–15 (sow outdoors) | – |
| Okra | Jan 4–18 | Mar 1–15 (transplant) Mar 1–15 (sow outdoors) | – |
| Celery | Nov 23–Dec 7 | Feb 22–Mar 1 (transplant) | – |
| Basil | Jan 4–18 | Feb 22–Mar 8 (transplant) Feb 22–Mar 8 (sow outdoors) | – |
| Cilantro | – | Feb 1–Mar 1 (sow outdoors) | Oct 14–28 (sowing) |
| Parsley | Dec 7–21 | Feb 1–15 (transplant) Jan 25–Feb 15 (sow outdoors) | – |
| Dill | – | Feb 15–Mar 1 (sow outdoors) | Oct 14–28 (sowing) |
| Sunflower | – | Feb 15–Mar 1 (sow outdoors) | – |
| Asparagus (crowns) | – | Jan 18–Feb 1 (transplant) | – |
| Rhubarb (crowns) | – | Jan 18–Feb 1 (transplant) | – |
| Strawberry (plants) | – | Jan 18–Feb 1 (transplant) | Sep 30–Oct 28 (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: Mapleton, OR (NOAA GHCN-Daily ID USC00355204), elevation 17 ft, 11.1 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Alsea Fh (fall Creek), OR | 17 mi | Apr 13 | Nov 3 |
| Fern Ridge-veneta, OR | 18 mi | Apr 18 | Oct 25 |
| Florence #2, OR | 22 mi | Apr 10 | Nov 15 |
The average last-frost dates of these stations span 65 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97430
When is the last frost in 97430?
The average (50% chance) last spring freeze of 32°F for ZIP 97430 is February 15. For a more cautious planting date, use March 19, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97430?
The average first fall freeze is December 9. In 1 year in 10 it comes by November 9.
What hardiness zone is 97430?
ZIP 97430 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 97430 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
97480 97412 97461 97490 97324 Alsea 97453 Mapleton 97419 Cheshire 97390
Other ZIP codes in Lane County
97401 97402 97403 97404 97405 97408 97412 97413 97419 97424 97426 97431 97434 97437 97438 97439 97448 97451 97452 97453 97454 97455 97461 97463 All Lane County frost dates · Oregon frost dates
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
- Soil-temp heads-up
- Weekly yard to-dos
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.