Frost dates for ZIP 97324 (Alsea, 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, Alsea Fh (fall Creek), OR (8 miles away).
- Average last spring frostApr 1350% chance of a 32°F freeze after this date
- Average first fall frostNov 350% chance of a 32°F freeze by this date
- Growing season (frost-free)202 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 (16 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 (16 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 97324 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 3: 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 17 |
| 50% (the "average" last frost) | Apr 13 |
| 10% (cautious: only 1 year in 10 freezes later) | May 3 |
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 9 |
| 50% (the "average" first frost) | Nov 3 |
| 90% (late: most years have frozen by now) | Dec 3 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 7 | Oct 11 |
| 32°F (freeze) | Apr 13 | Nov 3 |
| 28°F (hard freeze) | Feb 28 | 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 97324
Dates count from your average last spring frost (Apr 13) and first fall frost (Nov 3). 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 16–Mar 2 | Apr 20–May 4 (transplant) | – |
| Pepper (sweet and hot) | Feb 2–16 | Apr 27–May 11 (transplant) | – |
| Eggplant | Feb 2–16 | Apr 27–May 11 (transplant) | – |
| Tomatillo | Feb 16–Mar 2 | Apr 20–May 4 (transplant) | – |
| Lettuce | Feb 16–Mar 2 | Mar 23–Apr 13 (transplant) Mar 16–Apr 27 (sow outdoors) | Sep 8–29 (transplant) Aug 25–Sep 22 (sowing) |
| Spinach | – | Mar 2–23 (sow outdoors) | Sep 8–29 (sowing) |
| Kale | Feb 16–Mar 2 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | Aug 11–Sep 8 (transplant) Jul 28–Aug 25 (sowing) |
| Collards | Feb 16–Mar 2 | Mar 16–Apr 13 (transplant) Mar 16–Apr 13 (sow outdoors) | Aug 11–Sep 8 (transplant) Jul 28–Aug 25 (sowing) |
| Broccoli | Feb 2–16 | Mar 16–30 (transplant) | Jul 28–Aug 25 (transplant) |
| Cabbage | Feb 2–16 | Mar 16–30 (transplant) | Jul 28–Aug 25 (transplant) |
| Cauliflower | Feb 2–16 | Mar 30–Apr 13 (transplant) | Jul 28–Aug 25 (transplant) |
| Brussels sprouts | Jan 19–Feb 2 | Mar 16–30 (transplant) | Jul 14–Aug 4 (transplant) |
| Kohlrabi | Feb 16–Mar 2 | Mar 16–30 (transplant) Mar 16–30 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Bok choy / Asian greens | – | Mar 16–30 (sow outdoors) | Sep 8–22 (sowing) |
| Arugula | – | Mar 16–Apr 13 (sow outdoors) | Sep 8–Oct 6 (sowing) |
| Mustard greens | – | Mar 16–Apr 6 (sow outdoors) | Sep 8–22 (sowing) |
| Swiss chard | Mar 2–16 | Mar 30–Apr 20 (transplant) Mar 30–Apr 27 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Beet | – | Mar 16–Apr 13 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Carrot | – | Mar 23–Apr 20 (sow outdoors) | Aug 11–25 (sowing) |
| Radish | – | Mar 9–Apr 20 (sow outdoors) | Sep 22–Oct 6 (sowing) |
| Turnip | – | Mar 16–Apr 6 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Parsnip | – | Mar 23–Apr 13 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 16–Mar 16 (sow outdoors) | Aug 11–25 (sowing) |
| Onion (bulbing) | Jan 19–Feb 2 | Mar 2–16 (transplant) | – |
| Green onion / scallion | – | Mar 2–30 (sow outdoors) | Aug 25–Sep 8 (sowing) |
| Leek | Jan 19–Feb 2 | Mar 16–30 (transplant) | – |
| Garlic | – | – | Sep 22–Oct 20 (sowing) |
| Shallot | – | Mar 2–16 (transplant) | Sep 22–Oct 20 (sowing) |
| Potato | – | Mar 16–30 (transplant) | Jul 14–28 (transplant) |
| Sweet potato | – | May 4–18 (transplant) | – |
| Sweet corn | – | Apr 20–May 4 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 20–May 4 (sow outdoors) | – |
| Bean, pole | – | Apr 20–May 4 (sow outdoors) | – |
| Lima bean | – | Apr 27–May 11 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 4–25 (sow outdoors) | – |
| Cucumber | Mar 16–23 | Apr 20–May 4 (transplant) Apr 20–May 4 (sow outdoors) | – |
| Summer squash / zucchini | Mar 16–23 | Apr 20–May 4 (transplant) Apr 20–May 4 (sow outdoors) | – |
| Winter squash | Mar 16–23 | Apr 20–May 4 (transplant) Apr 20–May 4 (sow outdoors) | – |
| Pumpkin | – | Apr 20–May 4 (sow outdoors) | – |
| Watermelon | Mar 16–23 | Apr 27–May 11 (transplant) Apr 27–May 11 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 16–23 | Apr 27–May 11 (transplant) Apr 27–May 11 (sow outdoors) | – |
| Okra | Mar 2–16 | Apr 27–May 11 (transplant) Apr 27–May 11 (sow outdoors) | – |
| Celery | Jan 19–Feb 2 | Apr 20–27 (transplant) | – |
| Basil | Mar 2–16 | Apr 20–May 4 (transplant) Apr 20–May 4 (sow outdoors) | – |
| Cilantro | – | Mar 30–Apr 27 (sow outdoors) | Sep 8–22 (sowing) |
| Parsley | Feb 2–16 | Mar 30–Apr 13 (transplant) Mar 23–Apr 13 (sow outdoors) | – |
| Dill | – | Apr 13–27 (sow outdoors) | Sep 8–22 (sowing) |
| Sunflower | – | Apr 13–27 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 16–30 (transplant) | – |
| Rhubarb (crowns) | – | Mar 16–30 (transplant) | – |
| Strawberry (plants) | – | Mar 16–30 (transplant) | Aug 25–Sep 22 (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: Alsea Fh (fall Creek), OR (NOAA GHCN-Daily ID USC00350145), elevation 230 ft, 7.7 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Corvallis Water Bureau, OR | 14 mi | May 15 | Oct 8 |
| Corvallis 10 SSW, OR | 16 mi | Apr 11 | Oct 30 |
| Yachats, OR | 23 mi | Feb 19 | Dec 11 |
The average last-frost dates of these stations span 89 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97324
When is the last frost in 97324?
The average (50% chance) last spring freeze of 32°F for ZIP 97324 is April 13. For a more cautious planting date, use May 3, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97324?
The average first fall freeze is November 3. In 1 year in 10 it comes by October 9.
What hardiness zone is 97324?
ZIP 97324 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 97324 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
97412 97390 97430 97456 Bellfountain 97419 Cheshire 97370 Philomath 97343 97461
Other ZIP codes in Benton County
97330 97331 97333 97370 97456 All Benton County frost dates · Oregon frost dates
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