Fall in zone 8bPhoto: George Chernilevsky, Public domain, via Wikimedia Commons
Frost dates for ZIP 97477 (Springfield, 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, Eugene Mahlon Sweet AP, OR (11 miles away).
- Average last spring frostApr 1150% chance of a 32°F freeze after this date
- Average first fall frostOct 2350% chance of a 32°F freeze by this date
- Growing season (frost-free)196 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 (30 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 (30 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 97477 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
No vegetable planting windows are open this week.
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Oct 23: 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 15 |
| 50% (the "average" last frost) | Apr 11 |
| 10% (cautious: only 1 year in 10 freezes later) | May 9 |
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 6 |
| 50% (the "average" first frost) | Oct 23 |
| 90% (late: most years have frozen by now) | Nov 13 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 15 | Oct 7 |
| 32°F (freeze) | Apr 11 | Oct 23 |
| 28°F (hard freeze) | Mar 3 | Nov 11 |
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 97477
Dates count from your average last spring frost (Apr 11) and first fall frost (Oct 23). 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 14–28 | Apr 18–May 2 (transplant) | – |
| Pepper (sweet and hot) | Jan 31–Feb 14 | Apr 25–May 9 (transplant) | – |
| Eggplant | Jan 31–Feb 14 | Apr 25–May 9 (transplant) | – |
| Tomatillo | Feb 14–28 | Apr 18–May 2 (transplant) | – |
| Lettuce | Feb 14–28 | Mar 21–Apr 11 (transplant) Mar 14–Apr 25 (sow outdoors) | Aug 28–Sep 18 (transplant) Aug 14–Sep 11 (sowing) |
| Spinach | – | Feb 28–Mar 21 (sow outdoors) | Aug 28–Sep 18 (sowing) |
| Kale | Feb 14–28 | Mar 14–28 (transplant) Mar 14–28 (sow outdoors) | Jul 31–Aug 28 (transplant) Jul 17–Aug 14 (sowing) |
| Collards | Feb 14–28 | Mar 14–Apr 11 (transplant) Mar 14–Apr 11 (sow outdoors) | Jul 31–Aug 28 (transplant) Jul 17–Aug 14 (sowing) |
| Broccoli | Jan 31–Feb 14 | Mar 14–28 (transplant) | Jul 17–Aug 14 (transplant) |
| Cabbage | Jan 31–Feb 14 | Mar 14–28 (transplant) | Jul 17–Aug 14 (transplant) |
| Cauliflower | Jan 31–Feb 14 | Mar 28–Apr 11 (transplant) | Jul 17–Aug 14 (transplant) |
| Brussels sprouts | Jan 17–31 | Mar 14–28 (transplant) | Jul 3–24 (transplant) |
| Kohlrabi | Feb 14–28 | Mar 14–28 (transplant) Mar 14–28 (sow outdoors) | Aug 14–28 (sowing) |
| Bok choy / Asian greens | – | Mar 14–28 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Arugula | – | Mar 14–Apr 11 (sow outdoors) | Aug 28–Sep 25 (sowing) |
| Mustard greens | – | Mar 14–Apr 4 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Swiss chard | Feb 28–Mar 14 | Mar 28–Apr 18 (transplant) Mar 28–Apr 25 (sow outdoors) | Aug 14–28 (sowing) |
| Beet | – | Mar 14–Apr 11 (sow outdoors) | Aug 14–28 (sowing) |
| Carrot | – | Mar 21–Apr 18 (sow outdoors) | Jul 31–Aug 14 (sowing) |
| Radish | – | Mar 7–Apr 18 (sow outdoors) | Sep 11–25 (sowing) |
| Turnip | – | Mar 14–Apr 4 (sow outdoors) | Aug 14–28 (sowing) |
| Parsnip | – | Mar 21–Apr 11 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 14–Mar 14 (sow outdoors) | Jul 31–Aug 14 (sowing) |
| Onion (bulbing) | Jan 17–31 | Feb 28–Mar 14 (transplant) | – |
| Green onion / scallion | – | Feb 28–Mar 28 (sow outdoors) | Aug 14–28 (sowing) |
| Leek | Jan 17–31 | Mar 14–28 (transplant) | – |
| Garlic | – | – | Sep 11–Oct 9 (sowing) |
| Shallot | – | Feb 28–Mar 14 (transplant) | Sep 11–Oct 9 (sowing) |
| Potato | – | Mar 14–28 (transplant) | Jul 3–17 (transplant) |
| Sweet potato | – | May 2–16 (transplant) | – |
| Sweet corn | – | Apr 18–May 2 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 18–May 2 (sow outdoors) | – |
| Bean, pole | – | Apr 18–May 2 (sow outdoors) | – |
| Lima bean | – | Apr 25–May 9 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 2–23 (sow outdoors) | – |
| Cucumber | Mar 14–21 | Apr 18–May 2 (transplant) Apr 18–May 2 (sow outdoors) | – |
| Summer squash / zucchini | Mar 14–21 | Apr 18–May 2 (transplant) Apr 18–May 2 (sow outdoors) | – |
| Winter squash | Mar 14–21 | Apr 18–May 2 (transplant) Apr 18–May 2 (sow outdoors) | – |
| Pumpkin | – | Apr 18–May 2 (sow outdoors) | – |
| Watermelon | Mar 14–21 | Apr 25–May 9 (transplant) Apr 25–May 9 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 14–21 | Apr 25–May 9 (transplant) Apr 25–May 9 (sow outdoors) | – |
| Okra | Feb 28–Mar 14 | Apr 25–May 9 (transplant) Apr 25–May 9 (sow outdoors) | – |
| Celery | Jan 17–31 | Apr 18–25 (transplant) | – |
| Basil | Feb 28–Mar 14 | Apr 18–May 2 (transplant) Apr 18–May 2 (sow outdoors) | – |
| Cilantro | – | Mar 28–Apr 25 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Parsley | Jan 31–Feb 14 | Mar 28–Apr 11 (transplant) Mar 21–Apr 11 (sow outdoors) | – |
| Dill | – | Apr 11–25 (sow outdoors) | Aug 28–Sep 11 (sowing) |
| Sunflower | – | Apr 11–25 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 14–28 (transplant) | – |
| Rhubarb (crowns) | – | Mar 14–28 (transplant) | – |
| Strawberry (plants) | – | Mar 14–28 (transplant) | Aug 14–Sep 11 (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: Eugene Mahlon Sweet AP, OR (NOAA GHCN-Daily ID USW00024221), elevation 353 ft, 11.4 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Lookout Pt Dam, OR | 16 mi | Mar 7 | Nov 27 |
| Leaburg 1 SW, OR | 16 mi | Apr 3 | Nov 11 |
| Fern Ridge-veneta, OR | 18 mi | Apr 18 | Oct 25 |
The average last-frost dates of these stations span 42 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97477
When is the last frost in 97477?
The average (50% chance) last spring freeze of 32°F for ZIP 97477 is April 11. For a more cautious planting date, use May 9, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97477?
The average first fall freeze is October 23. In 1 year in 10 it comes by October 6.
What hardiness zone is 97477?
ZIP 97477 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 97477 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
97403 Eugene 97401 Eugene 97408 Eugene 97404 Santa Clara 97455 Jasper 97478 97405 Eugene 97402 Eugene
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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Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- 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.