Frost dates for ZIP 97128 (McMinnville, 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, Mc Minnville, OR (6 miles away).
- Average last spring frostApr 550% chance of a 32°F freeze after this date
- Average first fall frostNov 750% chance of a 32°F freeze by this date
- Growing season (frost-free)216 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 17, 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 60°F, as of Oct 17, 9:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Corvallis 10 SSW (55 mi).
4-inch depth
58°F 55°F or warmer
24-hour average · latest 60°F, as of Oct 17, 9:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Corvallis 10 SSW (55 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 97128 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
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 7: 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) | Mar 5 |
| 50% (the "average" last frost) | Apr 5 |
| 10% (cautious: only 1 year in 10 freezes later) | Apr 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) | Oct 20 |
| 50% (the "average" first frost) | Nov 7 |
| 90% (late: most years have frozen by now) | Dec 1 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Apr 29 | Oct 22 |
| 32°F (freeze) | Apr 5 | Nov 7 |
| 28°F (hard freeze) | Feb 20 | Nov 28 |
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 97128
Dates count from your average last spring frost (Apr 5) and first fall frost (Nov 7). 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 | Feb 8–22 | Apr 12–26 (transplant) | Jul 11–Aug 8 (transplant) |
| Pepper (sweet and hot) | Jan 25–Feb 8 | Apr 19–May 3 (transplant) | Jul 18–Aug 8 (transplant) |
| Eggplant | Jan 25–Feb 8 | Apr 19–May 3 (transplant) | Jul 18–Aug 8 (transplant) |
| Tomatillo | Feb 8–22 | Apr 12–26 (transplant) | – |
| Lettuce | Feb 8–22 | Mar 15–Apr 5 (transplant) Mar 8–Apr 19 (sow outdoors) | Sep 12–Oct 3 (transplant) Aug 29–Sep 26 (sowing) |
| Spinach | – | Feb 22–Mar 15 (sow outdoors) | Sep 12–Oct 3 (sowing) |
| Kale | Feb 8–22 | Mar 8–22 (transplant) Mar 8–22 (sow outdoors) | Aug 15–Sep 12 (transplant) Aug 1–29 (sowing) |
| Collards | Feb 8–22 | Mar 8–Apr 5 (transplant) Mar 8–Apr 5 (sow outdoors) | Aug 15–Sep 12 (transplant) Aug 1–29 (sowing) |
| Broccoli | Jan 25–Feb 8 | Mar 8–22 (transplant) | Aug 1–29 (transplant) |
| Cabbage | Jan 25–Feb 8 | Mar 8–22 (transplant) | Aug 1–29 (transplant) |
| Cauliflower | Jan 25–Feb 8 | Mar 22–Apr 5 (transplant) | Aug 1–29 (transplant) |
| Brussels sprouts | Jan 11–25 | Mar 8–22 (transplant) | Jul 18–Aug 8 (transplant) |
| Kohlrabi | Feb 8–22 | Mar 8–22 (transplant) Mar 8–22 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Bok choy / Asian greens | – | Mar 8–22 (sow outdoors) | Sep 12–26 (sowing) |
| Arugula | – | Mar 8–Apr 5 (sow outdoors) | Sep 12–Oct 10 (sowing) |
| Mustard greens | – | Mar 8–29 (sow outdoors) | Sep 12–26 (sowing) |
| Swiss chard | Feb 22–Mar 8 | Mar 22–Apr 12 (transplant) Mar 22–Apr 19 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Beet | – | Mar 8–Apr 5 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Carrot | – | Mar 15–Apr 12 (sow outdoors) | Aug 15–29 (sowing) |
| Radish | – | Mar 1–Apr 12 (sow outdoors) | Sep 26–Oct 10 (sowing) |
| Turnip | – | Mar 8–29 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Parsnip | – | Mar 15–Apr 5 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 8–Mar 8 (sow outdoors) | Aug 15–29 (sowing) |
| Onion (bulbing) | Jan 11–25 | Feb 22–Mar 8 (transplant) | – |
| Green onion / scallion | – | Feb 22–Mar 22 (sow outdoors) | Aug 29–Sep 12 (sowing) |
| Leek | Jan 11–25 | Mar 8–22 (transplant) | – |
| Garlic | – | – | Sep 26–Oct 24 (sowing) |
| Shallot | – | Feb 22–Mar 8 (transplant) | Sep 26–Oct 24 (sowing) |
| Potato | – | Mar 8–22 (transplant) | Jul 18–Aug 1 (transplant) |
| Sweet potato | – | Apr 26–May 10 (transplant) | – |
| Sweet corn | – | Apr 12–26 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 12–26 (sow outdoors) | Aug 15–29 (sowing) |
| Bean, pole | – | Apr 12–26 (sow outdoors) | – |
| Lima bean | – | Apr 19–May 3 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Apr 26–May 17 (sow outdoors) | – |
| Cucumber | Mar 8–15 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | Aug 15–29 (sowing) |
| Summer squash / zucchini | Mar 8–15 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | Aug 15–29 (sowing) |
| Winter squash | Mar 8–15 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | – |
| Pumpkin | – | Apr 12–26 (sow outdoors) | – |
| Watermelon | Mar 8–15 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 8–15 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | – |
| Okra | Feb 22–Mar 8 | Apr 19–May 3 (transplant) Apr 19–May 3 (sow outdoors) | – |
| Celery | Jan 11–25 | Apr 12–19 (transplant) | – |
| Basil | Feb 22–Mar 8 | Apr 12–26 (transplant) Apr 12–26 (sow outdoors) | – |
| Cilantro | – | Mar 22–Apr 19 (sow outdoors) | Sep 12–26 (sowing) |
| Parsley | Jan 25–Feb 8 | Mar 22–Apr 5 (transplant) Mar 15–Apr 5 (sow outdoors) | – |
| Dill | – | Apr 5–19 (sow outdoors) | Sep 12–26 (sowing) |
| Sunflower | – | Apr 5–19 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 8–22 (transplant) | – |
| Rhubarb (crowns) | – | Mar 8–22 (transplant) | – |
| Strawberry (plants) | – | Mar 8–22 (transplant) | Aug 29–Sep 26 (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: Mc Minnville, OR (NOAA GHCN-Daily ID USC00355384), elevation 155 ft, 5.8 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Mcminnville Muni AP, OR | 7 mi | Apr 15 | Oct 26 |
| Dallas 2 NE, OR | 18 mi | Apr 16 | Nov 1 |
| Rex 1 S, OR | 19 mi | Mar 21 | Nov 22 |
The average last-frost dates of these stations span 26 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97128
When is the last frost in 97128?
The average (50% chance) last spring freeze of 32°F for ZIP 97128 is April 5. For a more cautious planting date, use April 27, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97128?
The average first fall freeze is November 7. In 1 year in 10 it comes by October 20.
What hardiness zone is 97128?
ZIP 97128 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 97128 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
97111 Carlton 97127 Lafayette 97101 Amity 97114 Dayton 97148 Yamhill 97378 Sheridan 97115 Dundee 97396 Fort Hill
Other ZIP codes in Yamhill County
97101 97111 97114 97115 97127 97132 97148 97347 97378 97396 All Yamhill County frost dates · Oregon frost dates
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