Frost dates for ZIP 97439 (Florence, 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, Florence #2, OR (6 miles away).
- Average last spring frostApr 1050% chance of a 32°F freeze after this date
- Average first fall frostNov 1550% chance of a 32°F freeze by this date
- Growing season (frost-free)220 daysmedian, 32°F threshold
- USDA hardiness zone9a20 to 25°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
56°F 55°F or warmer
24-hour average · latest 58°F, as of Oct 17, 9:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Corvallis 10 SSW (42 mi), Coos Bay 8 SW (57 mi).
4-inch depth
57°F 55°F or warmer
24-hour average · latest 58°F, as of Oct 17, 9:00 PM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of Corvallis 10 SSW (42 mi), Coos Bay 8 SW (57 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 97439 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 57°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
- Arugula: fall sowing Sep 20–Oct 18
- Radish: fall sowing Oct 4–18
- Garlic: fall sowing Oct 4–Nov 1
- Shallot: fall sowing Oct 4–Nov 1
Prune now
No frost-timed pruning windows are open this week.
Your average first frost is Nov 15: 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 6 |
| 50% (the "average" last frost) | Apr 10 |
| 10% (cautious: only 1 year in 10 freezes later) | May 5 |
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 23 |
| 50% (the "average" first frost) | Nov 15 |
| 90% (late: most years have frozen by now) | Dec 13 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 8 | Oct 15 |
| 32°F (freeze) | Apr 10 | Nov 15 |
| 28°F (hard freeze) | Feb 26 | Dec 12 |
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 97439
Dates count from your average last spring frost (Apr 10) and first fall frost (Nov 15). 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 13–27 | Apr 17–May 1 (transplant) | Jul 19–Aug 16 (transplant) |
| Pepper (sweet and hot) | Jan 30–Feb 13 | Apr 24–May 8 (transplant) | Jul 26–Aug 16 (transplant) |
| Eggplant | Jan 30–Feb 13 | Apr 24–May 8 (transplant) | Jul 26–Aug 16 (transplant) |
| Tomatillo | Feb 13–27 | Apr 17–May 1 (transplant) | – |
| Lettuce | Feb 13–27 | Mar 20–Apr 10 (transplant) Mar 13–Apr 24 (sow outdoors) | Sep 20–Oct 11 (transplant) Sep 6–Oct 4 (sowing) |
| Spinach | – | Feb 27–Mar 20 (sow outdoors) | Sep 20–Oct 11 (sowing) |
| Kale | Feb 13–27 | Mar 13–27 (transplant) Mar 13–27 (sow outdoors) | Aug 23–Sep 20 (transplant) Aug 9–Sep 6 (sowing) |
| Collards | Feb 13–27 | Mar 13–Apr 10 (transplant) Mar 13–Apr 10 (sow outdoors) | Aug 23–Sep 20 (transplant) Aug 9–Sep 6 (sowing) |
| Broccoli | Jan 30–Feb 13 | Mar 13–27 (transplant) | Aug 9–Sep 6 (transplant) |
| Cabbage | Jan 30–Feb 13 | Mar 13–27 (transplant) | Aug 9–Sep 6 (transplant) |
| Cauliflower | Jan 30–Feb 13 | Mar 27–Apr 10 (transplant) | Aug 9–Sep 6 (transplant) |
| Brussels sprouts | Jan 16–30 | Mar 13–27 (transplant) | Jul 26–Aug 16 (transplant) |
| Kohlrabi | Feb 13–27 | Mar 13–27 (transplant) Mar 13–27 (sow outdoors) | Sep 6–20 (sowing) |
| Bok choy / Asian greens | – | Mar 13–27 (sow outdoors) | Sep 20–Oct 4 (sowing) |
| Arugula | – | Mar 13–Apr 10 (sow outdoors) | Sep 20–Oct 18 (sowing) |
| Mustard greens | – | Mar 13–Apr 3 (sow outdoors) | Sep 20–Oct 4 (sowing) |
| Swiss chard | Feb 27–Mar 13 | Mar 27–Apr 17 (transplant) Mar 27–Apr 24 (sow outdoors) | Sep 6–20 (sowing) |
| Beet | – | Mar 13–Apr 10 (sow outdoors) | Sep 6–20 (sowing) |
| Carrot | – | Mar 20–Apr 17 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Radish | – | Mar 6–Apr 17 (sow outdoors) | Oct 4–18 (sowing) |
| Turnip | – | Mar 13–Apr 3 (sow outdoors) | Sep 6–20 (sowing) |
| Parsnip | – | Mar 20–Apr 10 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 13–Mar 13 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Onion (bulbing) | Jan 16–30 | Feb 27–Mar 13 (transplant) | – |
| Green onion / scallion | – | Feb 27–Mar 27 (sow outdoors) | Sep 6–20 (sowing) |
| Leek | Jan 16–30 | Mar 13–27 (transplant) | – |
| Garlic | – | – | Oct 4–Nov 1 (sowing) |
| Shallot | – | Feb 27–Mar 13 (transplant) | Oct 4–Nov 1 (sowing) |
| Potato | – | Mar 13–27 (transplant) | Jul 26–Aug 9 (transplant) |
| Sweet potato | – | May 1–15 (transplant) | – |
| Sweet corn | – | Apr 17–May 1 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 17–May 1 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Bean, pole | – | Apr 17–May 1 (sow outdoors) | – |
| Lima bean | – | Apr 24–May 8 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 1–22 (sow outdoors) | – |
| Cucumber | Mar 13–20 | Apr 17–May 1 (transplant) Apr 17–May 1 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Summer squash / zucchini | Mar 13–20 | Apr 17–May 1 (transplant) Apr 17–May 1 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Winter squash | Mar 13–20 | Apr 17–May 1 (transplant) Apr 17–May 1 (sow outdoors) | – |
| Pumpkin | – | Apr 17–May 1 (sow outdoors) | – |
| Watermelon | Mar 13–20 | Apr 24–May 8 (transplant) Apr 24–May 8 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 13–20 | Apr 24–May 8 (transplant) Apr 24–May 8 (sow outdoors) | – |
| Okra | Feb 27–Mar 13 | Apr 24–May 8 (transplant) Apr 24–May 8 (sow outdoors) | – |
| Celery | Jan 16–30 | Apr 17–24 (transplant) | – |
| Basil | Feb 27–Mar 13 | Apr 17–May 1 (transplant) Apr 17–May 1 (sow outdoors) | – |
| Cilantro | – | Mar 27–Apr 24 (sow outdoors) | Sep 20–Oct 4 (sowing) |
| Parsley | Jan 30–Feb 13 | Mar 27–Apr 10 (transplant) Mar 20–Apr 10 (sow outdoors) | – |
| Dill | – | Apr 10–24 (sow outdoors) | Sep 20–Oct 4 (sowing) |
| Sunflower | – | Apr 10–24 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 13–27 (transplant) | – |
| Rhubarb (crowns) | – | Mar 13–27 (transplant) | – |
| Strawberry (plants) | – | Mar 13–27 (transplant) | Sep 6–Oct 4 (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: Florence #2, OR (NOAA GHCN-Daily ID USC00352973), elevation 75 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%) |
|---|---|---|---|
| Mapleton, OR | 9 mi | Feb 15 | Dec 9 |
| Honeyman Sp, OR | 11 mi | Mar 28 | Nov 22 |
| Yachats, OR | 18 mi | Feb 19 | Dec 11 |
The average last-frost dates of these stations span 57 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97439
When is the last frost in 97439?
The average (50% chance) last spring freeze of 32°F for ZIP 97439 is April 10. For a more cautious planting date, use May 5, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97439?
The average first fall freeze is November 15. In 1 year in 10 it comes by October 23.
What hardiness zone is 97439?
ZIP 97439 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 97439 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 97453 Mapleton 97493 97498 San Marine 97430 97390 97490 97394 Waldport
Other ZIP codes in Lane County
97401 97402 97403 97404 97405 97408 97412 97413 97419 97424 97426 97430 97431 97434 97437 97438 97448 97451 97452 97453 97454 97455 97461 97463 All Lane County frost dates · Oregon frost dates
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