Fall in zone 8bPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 97488 (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, Cougar Dam, OR (9 miles away).
- Average last spring frostMar 250% 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)274 daysmedian, 32°F threshold
- USDA hardiness zone8b15 to 20°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
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 (49 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 (49 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 97488 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 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 24 |
| 50% (the "average" last frost) | Mar 2 |
| 10% (cautious: only 1 year in 10 freezes later) | Mar 27 |
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 3 |
| 50% (the "average" first frost) | Nov 30 |
| 90% (late: most years have frozen by now) | Dec 28 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Mar 31 | Nov 11 |
| 32°F (freeze) | Mar 2 | Nov 30 |
| 28°F (hard freeze) | Feb 1 | Dec 15 |
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 97488
Dates count from your average last spring frost (Mar 2) 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 5–19 | Mar 9–23 (transplant) | Aug 3–31 (transplant) |
| Pepper (sweet and hot) | Dec 22–Jan 5 | Mar 16–30 (transplant) | Aug 10–31 (transplant) |
| Eggplant | Dec 22–Jan 5 | Mar 16–30 (transplant) | Aug 10–31 (transplant) |
| Tomatillo | Jan 5–19 | Mar 9–23 (transplant) | – |
| Lettuce | Jan 5–19 | Feb 9–Mar 2 (transplant) Feb 2–Mar 16 (sow outdoors) | Oct 5–26 (transplant) Sep 21–Oct 19 (sowing) |
| Spinach | – | Jan 19–Feb 9 (sow outdoors) | Oct 5–26 (sowing) |
| Kale | Jan 5–19 | Feb 2–16 (transplant) Feb 2–16 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Collards | Jan 5–19 | Feb 2–Mar 2 (transplant) Feb 2–Mar 2 (sow outdoors) | Sep 7–Oct 5 (transplant) Aug 24–Sep 21 (sowing) |
| Broccoli | Dec 22–Jan 5 | Feb 2–16 (transplant) | Aug 24–Sep 21 (transplant) |
| Cabbage | Dec 22–Jan 5 | Feb 2–16 (transplant) | Aug 24–Sep 21 (transplant) |
| Cauliflower | Dec 22–Jan 5 | Feb 16–Mar 2 (transplant) | Aug 24–Sep 21 (transplant) |
| Brussels sprouts | Dec 8–22 | Feb 2–16 (transplant) | Aug 10–31 (transplant) |
| Kohlrabi | Jan 5–19 | Feb 2–16 (transplant) Feb 2–16 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Bok choy / Asian greens | – | Feb 2–16 (sow outdoors) | Oct 5–19 (sowing) |
| Arugula | – | Feb 2–Mar 2 (sow outdoors) | Oct 5–Nov 2 (sowing) |
| Mustard greens | – | Feb 2–23 (sow outdoors) | Oct 5–19 (sowing) |
| Swiss chard | Jan 19–Feb 2 | Feb 16–Mar 9 (transplant) Feb 16–Mar 16 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Beet | – | Feb 2–Mar 2 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Carrot | – | Feb 9–Mar 9 (sow outdoors) | Sep 7–21 (sowing) |
| Radish | – | Jan 26–Mar 9 (sow outdoors) | Oct 19–Nov 2 (sowing) |
| Turnip | – | Feb 2–23 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Parsnip | – | Feb 9–Mar 2 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Jan 5–Feb 2 (sow outdoors) | Sep 7–21 (sowing) |
| Onion (bulbing) | Dec 8–22 | Jan 19–Feb 2 (transplant) | – |
| Green onion / scallion | – | Jan 19–Feb 16 (sow outdoors) | Sep 21–Oct 5 (sowing) |
| Leek | Dec 8–22 | Feb 2–16 (transplant) | – |
| Garlic | – | – | Oct 19–Nov 16 (sowing) |
| Shallot | – | Jan 19–Feb 2 (transplant) | Oct 19–Nov 16 (sowing) |
| Potato | – | Feb 2–16 (transplant) | Aug 10–24 (transplant) |
| Sweet potato | – | Mar 23–Apr 6 (transplant) | – |
| Sweet corn | – | Mar 9–23 (sow outdoors) | – |
| Bean, bush (snap) | – | Mar 9–23 (sow outdoors) | Sep 7–21 (sowing) |
| Bean, pole | – | Mar 9–23 (sow outdoors) | – |
| Lima bean | – | Mar 16–30 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Mar 23–Apr 13 (sow outdoors) | – |
| Cucumber | Feb 2–9 | Mar 9–23 (transplant) Mar 9–23 (sow outdoors) | Sep 7–21 (sowing) |
| Summer squash / zucchini | Feb 2–9 | Mar 9–23 (transplant) Mar 9–23 (sow outdoors) | Sep 7–21 (sowing) |
| Winter squash | Feb 2–9 | Mar 9–23 (transplant) Mar 9–23 (sow outdoors) | – |
| Pumpkin | – | Mar 9–23 (sow outdoors) | – |
| Watermelon | Feb 2–9 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | – |
| Cantaloupe / muskmelon | Feb 2–9 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | – |
| Okra | Jan 19–Feb 2 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | – |
| Celery | Dec 8–22 | Mar 9–16 (transplant) | – |
| Basil | Jan 19–Feb 2 | Mar 9–23 (transplant) Mar 9–23 (sow outdoors) | – |
| Cilantro | – | Feb 16–Mar 16 (sow outdoors) | Oct 5–19 (sowing) |
| Parsley | Dec 22–Jan 5 | Feb 16–Mar 2 (transplant) Feb 9–Mar 2 (sow outdoors) | – |
| Dill | – | Mar 2–16 (sow outdoors) | Oct 5–19 (sowing) |
| Sunflower | – | Mar 2–16 (sow outdoors) | – |
| Asparagus (crowns) | – | Feb 2–16 (transplant) | – |
| Rhubarb (crowns) | – | Feb 2–16 (transplant) | – |
| Strawberry (plants) | – | Feb 2–16 (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: Cougar Dam, OR (NOAA GHCN-Daily ID USC00351914), elevation 1,260 ft, 8.7 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Leaburg 1 SW, OR | 14 mi | Apr 3 | Nov 11 |
| Mckenzie Rvr Rs, OR | 15 mi | May 1 | Oct 10 |
| Cascadia, OR | 18 mi | Apr 29 | Oct 13 |
The average last-frost dates of these stations span 61 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97488
When is the last frost in 97488?
The average (50% chance) last spring freeze of 32°F for ZIP 97488 is March 2. For a more cautious planting date, use March 27, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97488?
The average first fall freeze is November 30. In 1 year in 10 it comes by November 3.
What hardiness zone is 97488?
ZIP 97488 is in USDA zone 8b (15 to 20°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 97488 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
97489 97329 97438 97454 Marcola 97345 Cascadia 97478 97386 Sweet Home 97492 Westfir
Other ZIP codes in Lane County
97401 97402 97403 97404 97405 97408 97412 97413 97419 97424 97426 97430 97431 97434 97437 97438 97439 97448 97451 97452 97453 97454 97455 97461 All Lane County frost dates · Oregon frost dates
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- 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.