Frost dates for ZIP 97522 (Butte Falls, 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, Prospect 2 SW, OR (8 miles away).
- Average last spring frostMay 1950% chance of a 32°F freeze after this date
- Average first fall frostOct 350% chance of a 32°F freeze by this date
- Growing season (frost-free)136 daysmedian, 32°F threshold
- USDA hardiness zone8a10 to 15°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
No soil station with a fresh reading within 62 miles.
4-inch depth
No soil station with a fresh reading within 62 miles.
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 97522 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
No soil reading near this ZIP. Typical extension timing for your region: spring March to April.
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.
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) | Apr 29 |
| 50% (the "average" last frost) | May 19 |
| 10% (cautious: only 1 year in 10 freezes later) | Jun 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) | Sep 13 |
| 50% (the "average" first frost) | Oct 3 |
| 90% (late: most years have frozen by now) | Oct 20 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Jun 11 | Sep 14 |
| 32°F (freeze) | May 19 | Oct 3 |
| 28°F (hard freeze) | Apr 26 | Oct 24 |
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 97522
Dates count from your average last spring frost (May 19) and first fall frost (Oct 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 | Mar 24–Apr 7 | May 26–Jun 9 (transplant) | – |
| Pepper (sweet and hot) | Mar 10–24 | Jun 2–16 (transplant) | – |
| Eggplant | Mar 10–24 | Jun 2–16 (transplant) | – |
| Tomatillo | Mar 24–Apr 7 | May 26–Jun 9 (transplant) | – |
| Lettuce | Mar 24–Apr 7 | Apr 28–May 19 (transplant) Apr 21–Jun 2 (sow outdoors) | Aug 8–29 (transplant) Jul 25–Aug 22 (sowing) |
| Spinach | – | Apr 7–28 (sow outdoors) | Aug 8–29 (sowing) |
| Kale | Mar 24–Apr 7 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | Jul 11–Aug 8 (transplant) Jun 27–Jul 25 (sowing) |
| Collards | Mar 24–Apr 7 | Apr 21–May 19 (transplant) Apr 21–May 19 (sow outdoors) | Jul 11–Aug 8 (transplant) Jun 27–Jul 25 (sowing) |
| Broccoli | Mar 10–24 | Apr 21–May 5 (transplant) | Jun 27–Jul 25 (transplant) |
| Cabbage | Mar 10–24 | Apr 21–May 5 (transplant) | Jun 27–Jul 25 (transplant) |
| Cauliflower | Mar 10–24 | May 5–19 (transplant) | Jun 27–Jul 25 (transplant) |
| Brussels sprouts | Feb 24–Mar 10 | Apr 21–May 5 (transplant) | Jun 13–Jul 4 (transplant) |
| Kohlrabi | Mar 24–Apr 7 | Apr 21–May 5 (transplant) Apr 21–May 5 (sow outdoors) | Jul 25–Aug 8 (sowing) |
| Bok choy / Asian greens | – | Apr 21–May 5 (sow outdoors) | Aug 8–22 (sowing) |
| Arugula | – | Apr 21–May 19 (sow outdoors) | Aug 8–Sep 5 (sowing) |
| Mustard greens | – | Apr 21–May 12 (sow outdoors) | Aug 8–22 (sowing) |
| Swiss chard | Apr 7–21 | May 5–26 (transplant) May 5–Jun 2 (sow outdoors) | Jul 25–Aug 8 (sowing) |
| Beet | – | Apr 21–May 19 (sow outdoors) | Jul 25–Aug 8 (sowing) |
| Carrot | – | Apr 28–May 26 (sow outdoors) | Jul 11–25 (sowing) |
| Radish | – | Apr 14–May 26 (sow outdoors) | Aug 22–Sep 5 (sowing) |
| Turnip | – | Apr 21–May 12 (sow outdoors) | Jul 25–Aug 8 (sowing) |
| Parsnip | – | Apr 28–May 19 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Mar 24–Apr 21 (sow outdoors) | Jul 11–25 (sowing) |
| Onion (bulbing) | Feb 24–Mar 10 | Apr 7–21 (transplant) | – |
| Green onion / scallion | – | Apr 7–May 5 (sow outdoors) | Jul 25–Aug 8 (sowing) |
| Leek | Feb 24–Mar 10 | Apr 21–May 5 (transplant) | – |
| Garlic | – | – | Aug 22–Sep 19 (sowing) |
| Shallot | – | Apr 7–21 (transplant) | Aug 22–Sep 19 (sowing) |
| Potato | – | Apr 21–May 5 (transplant) | Jun 13–27 (transplant) |
| Sweet potato | – | Jun 9–23 (transplant) | – |
| Sweet corn | – | May 26–Jun 9 (sow outdoors) | – |
| Bean, bush (snap) | – | May 26–Jun 9 (sow outdoors) | – |
| Bean, pole | – | May 26–Jun 9 (sow outdoors) | – |
| Lima bean | – | Jun 2–16 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 9–30 (sow outdoors) | – |
| Cucumber | Apr 21–28 | May 26–Jun 9 (transplant) May 26–Jun 9 (sow outdoors) | – |
| Summer squash / zucchini | Apr 21–28 | May 26–Jun 9 (transplant) May 26–Jun 9 (sow outdoors) | – |
| Winter squash | Apr 21–28 | May 26–Jun 9 (transplant) May 26–Jun 9 (sow outdoors) | – |
| Pumpkin | – | May 26–Jun 9 (sow outdoors) | – |
| Watermelon | Apr 21–28 | Jun 2–16 (transplant) Jun 2–16 (sow outdoors) | – |
| Cantaloupe / muskmelon | Apr 21–28 | Jun 2–16 (transplant) Jun 2–16 (sow outdoors) | – |
| Okra | Apr 7–21 | Jun 2–16 (transplant) Jun 2–16 (sow outdoors) | – |
| Celery | Feb 24–Mar 10 | May 26–Jun 2 (transplant) | – |
| Basil | Apr 7–21 | May 26–Jun 9 (transplant) May 26–Jun 9 (sow outdoors) | – |
| Cilantro | – | May 5–Jun 2 (sow outdoors) | Aug 8–22 (sowing) |
| Parsley | Mar 10–24 | May 5–19 (transplant) Apr 28–May 19 (sow outdoors) | – |
| Dill | – | May 19–Jun 2 (sow outdoors) | Aug 8–22 (sowing) |
| Sunflower | – | May 19–Jun 2 (sow outdoors) | – |
| Asparagus (crowns) | – | Apr 21–May 5 (transplant) | – |
| Rhubarb (crowns) | – | Apr 21–May 5 (transplant) | – |
| Strawberry (plants) | – | Apr 21–May 5 (transplant) | Jul 25–Aug 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: Prospect 2 SW, OR (NOAA GHCN-Daily ID USC00356907), elevation 2,482 ft, 8.1 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Lost Creek Dam, OR | 13 mi | Apr 29 | Oct 17 |
| Howard Prairie Dam, OR | 28 mi | Jun 8 | Sep 24 |
| Medford Rogue Vly AP, OR | 28 mi | Apr 8 | Oct 29 |
The average last-frost dates of these stations span 62 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97522
When is the last frost in 97522?
The average (50% chance) last spring freeze of 32°F for ZIP 97522 is May 19. For a more cautious planting date, use June 9, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97522?
The average first fall freeze is October 3. In 1 year in 10 it comes by September 13.
What hardiness zone is 97522?
ZIP 97522 is in USDA zone 8a (10 to 15°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 97522 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
97536 Prospect 97524 Eagle Point 97539 Shady Cove 97541 Trail 97626 Fort Klamath 97601 Klamath Falls 97503 White City 97604
Other ZIP codes in Jackson County
97501 97502 97503 97504 97520 97524 97525 97530 97535 97536 97537 97539 97540 97541 All Jackson County frost dates · Oregon frost dates
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