Fall in zone 6aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 97751 (Crook County, 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, Barnes STN, OR (25 miles away).
Station is a bit far
The nearest station with freeze normals is over 40 km away, so dates here may be off by a week or more.
- Average last spring frostJun 250% chance of a 32°F freeze after this date
- Average first fall frostSep 1750% chance of a 32°F freeze by this date
- Growing season (frost-free)104 daysmedian, 32°F threshold
- USDA hardiness zone6a-10 to -5°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 60°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of John Day 35 WNW (30 mi), Riley 10 WSW (46 mi).
4-inch depth
59°F 55°F or warmer
24-hour average · latest 59°F, as of Oct 18, 1:00 AM CDT
Estimate Not a measurement at this ZIP: distance-weighted average of John Day 35 WNW (30 mi), Riley 10 WSW (46 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 97751 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 59°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: Mountain West and High Plains. Timing only; always follow the product label.
- Kentucky bluegrass (cool-season): Early fall: Around Labor Day (late August–September); Late fall: Late October–November, before the ground freezes; Late spring: Optional around Memorial Day. Avoid: Early-spring and midsummer feeding (pushes top growth, favors crabgrass).
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) | May 13 |
| 50% (the "average" last frost) | Jun 2 |
| 10% (cautious: only 1 year in 10 freezes later) | Jun 25 |
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) | Aug 30 |
| 50% (the "average" first frost) | Sep 17 |
| 90% (late: most years have frozen by now) | Oct 1 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | n/a | n/a |
| 32°F (freeze) | Jun 2 | Sep 17 |
| 28°F (hard freeze) | May 12 | Sep 30 |
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 97751
Dates count from your average last spring frost (Jun 2) and first fall frost (Sep 17). 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 | Apr 7–21 | Jun 9–23 (transplant) | – |
| Pepper (sweet and hot) | Mar 24–Apr 7 | Jun 16–30 (transplant) | – |
| Eggplant | Mar 24–Apr 7 | Jun 16–30 (transplant) | – |
| Tomatillo | Apr 7–21 | Jun 9–23 (transplant) | – |
| Lettuce | Apr 7–21 | May 12–Jun 2 (transplant) May 5–Jun 16 (sow outdoors) | Jul 23–Aug 13 (transplant) Jul 9–Aug 6 (sowing) |
| Spinach | – | Apr 21–May 12 (sow outdoors) | Jul 23–Aug 13 (sowing) |
| Kale | Apr 7–21 | May 5–19 (transplant) May 5–19 (sow outdoors) | Jun 25–Jul 23 (transplant) Jun 11–Jul 9 (sowing) |
| Collards | Apr 7–21 | May 5–Jun 2 (transplant) May 5–Jun 2 (sow outdoors) | Jun 25–Jul 23 (transplant) Jun 11–Jul 9 (sowing) |
| Broccoli | Mar 24–Apr 7 | May 5–19 (transplant) | Jun 11–Jul 9 (transplant) |
| Cabbage | Mar 24–Apr 7 | May 5–19 (transplant) | Jun 11–Jul 9 (transplant) |
| Cauliflower | Mar 24–Apr 7 | May 19–Jun 2 (transplant) | Jun 11–Jul 9 (transplant) |
| Brussels sprouts | Mar 10–24 | May 5–19 (transplant) | May 28–Jun 18 (transplant) |
| Kohlrabi | Apr 7–21 | May 5–19 (transplant) May 5–19 (sow outdoors) | Jul 9–23 (sowing) |
| Bok choy / Asian greens | – | May 5–19 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Arugula | – | May 5–Jun 2 (sow outdoors) | Jul 23–Aug 20 (sowing) |
| Mustard greens | – | May 5–26 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Swiss chard | Apr 21–May 5 | May 19–Jun 9 (transplant) May 19–Jun 16 (sow outdoors) | Jul 9–23 (sowing) |
| Beet | – | May 5–Jun 2 (sow outdoors) | Jul 9–23 (sowing) |
| Carrot | – | May 12–Jun 9 (sow outdoors) | Jun 25–Jul 9 (sowing) |
| Radish | – | Apr 28–Jun 9 (sow outdoors) | Aug 6–20 (sowing) |
| Turnip | – | May 5–26 (sow outdoors) | Jul 9–23 (sowing) |
| Parsnip | – | May 12–Jun 2 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Apr 7–May 5 (sow outdoors) | Jun 25–Jul 9 (sowing) |
| Onion (bulbing) | Mar 10–24 | Apr 21–May 5 (transplant) | – |
| Green onion / scallion | – | Apr 21–May 19 (sow outdoors) | Jul 9–23 (sowing) |
| Leek | Mar 10–24 | May 5–19 (transplant) | – |
| Garlic | – | – | Aug 6–Sep 3 (sowing) |
| Shallot | – | Apr 21–May 5 (transplant) | Aug 6–Sep 3 (sowing) |
| Potato | – | May 5–19 (transplant) | May 28–Jun 11 (transplant) |
| Sweet potato | – | Jun 23–Jul 7 (transplant) | – |
| Sweet corn | – | Jun 9–23 (sow outdoors) | – |
| Bean, bush (snap) | – | Jun 9–23 (sow outdoors) | – |
| Bean, pole | – | Jun 9–23 (sow outdoors) | – |
| Lima bean | – | Jun 16–30 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 23–Jul 14 (sow outdoors) | – |
| Cucumber | May 5–12 | Jun 9–23 (transplant) Jun 9–23 (sow outdoors) | – |
| Summer squash / zucchini | May 5–12 | Jun 9–23 (transplant) Jun 9–23 (sow outdoors) | – |
| Winter squash | May 5–12 | Jun 9–23 (transplant) Jun 9–23 (sow outdoors) | – |
| Pumpkin | – | Jun 9–23 (sow outdoors) | – |
| Watermelon | May 5–12 | Jun 16–30 (transplant) Jun 16–30 (sow outdoors) | – |
| Cantaloupe / muskmelon | May 5–12 | Jun 16–30 (transplant) Jun 16–30 (sow outdoors) | – |
| Okra | Apr 21–May 5 | Jun 16–30 (transplant) Jun 16–30 (sow outdoors) | – |
| Celery | Mar 10–24 | Jun 9–16 (transplant) | – |
| Basil | Apr 21–May 5 | Jun 9–23 (transplant) Jun 9–23 (sow outdoors) | – |
| Cilantro | – | May 19–Jun 16 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Parsley | Mar 24–Apr 7 | May 19–Jun 2 (transplant) May 12–Jun 2 (sow outdoors) | – |
| Dill | – | Jun 2–16 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Sunflower | – | Jun 2–16 (sow outdoors) | – |
| Asparagus (crowns) | – | May 5–19 (transplant) | – |
| Rhubarb (crowns) | – | May 5–19 (transplant) | – |
| Strawberry (plants) | – | May 5–19 (transplant) | Jul 9–Aug 6 (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: Barnes STN, OR (NOAA GHCN-Daily ID USC00350501), elevation 3,970 ft, 25.2 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| John Day 35 WNW, OR | 30 mi | Apr 30 | Oct 14 |
| Dayville 8 NW, OR | 30 mi | May 4 | Oct 6 |
| Mitchell 2 E, OR | 34 mi | May 22 | Oct 4 |
The average last-frost dates of these stations span 34 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97751
When is the last frost in 97751?
The average (50% chance) last spring freeze of 32°F for ZIP 97751 is June 2. For a more cautious planting date, use June 25, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97751?
The average first fall freeze is September 17. In 1 year in 10 it comes by August 30.
What hardiness zone is 97751?
ZIP 97751 is in USDA zone 6a (-10 to -5°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 97751 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
97752 97825 Dayville 97820 Canyon City 97754 Juniper Canyon 97865 Mount Vernon 97873 Seneca 97712 97848
Other ZIP codes in Crook County
97752 97753 97754 All Crook 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.