Fall in zone 6aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 97737 (Gilchrist, 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, Wickiup Dam, OR (13 miles away).
- Average last spring frostJun 750% chance of a 32°F freeze after this date
- Average first fall frostSep 1850% chance of a 32°F freeze by this date
- Growing season (frost-free)100 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
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 97737 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) | May 16 |
| 50% (the "average" last frost) | Jun 7 |
| 10% (cautious: only 1 year in 10 freezes later) | Jul 2 |
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 3 |
| 50% (the "average" first frost) | Sep 18 |
| 90% (late: most years have frozen by now) | Oct 3 |
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 7 | Sep 18 |
| 28°F (hard freeze) | May 16 | Oct 3 |
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 97737
Dates count from your average last spring frost (Jun 7) and first fall frost (Sep 18). 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 12–26 | Jun 14–28 (transplant) | – |
| Pepper (sweet and hot) | Mar 29–Apr 12 | Jun 21–Jul 5 (transplant) | – |
| Eggplant | Mar 29–Apr 12 | Jun 21–Jul 5 (transplant) | – |
| Tomatillo | Apr 12–26 | Jun 14–28 (transplant) | – |
| Lettuce | Apr 12–26 | May 17–Jun 7 (transplant) May 10–Jun 21 (sow outdoors) | Jul 24–Aug 14 (transplant) Jul 10–Aug 7 (sowing) |
| Spinach | – | Apr 26–May 17 (sow outdoors) | Jul 24–Aug 14 (sowing) |
| Kale | Apr 12–26 | May 10–24 (transplant) May 10–24 (sow outdoors) | Jun 26–Jul 24 (transplant) Jun 12–Jul 10 (sowing) |
| Collards | Apr 12–26 | May 10–Jun 7 (transplant) May 10–Jun 7 (sow outdoors) | Jun 26–Jul 24 (transplant) Jun 12–Jul 10 (sowing) |
| Broccoli | Mar 29–Apr 12 | May 10–24 (transplant) | Jun 12–Jul 10 (transplant) |
| Cabbage | Mar 29–Apr 12 | May 10–24 (transplant) | Jun 12–Jul 10 (transplant) |
| Cauliflower | Mar 29–Apr 12 | May 24–Jun 7 (transplant) | Jun 12–Jul 10 (transplant) |
| Brussels sprouts | Mar 15–29 | May 10–24 (transplant) | May 29–Jun 19 (transplant) |
| Kohlrabi | Apr 12–26 | May 10–24 (transplant) May 10–24 (sow outdoors) | Jul 10–24 (sowing) |
| Bok choy / Asian greens | – | May 10–24 (sow outdoors) | Jul 24–Aug 7 (sowing) |
| Arugula | – | May 10–Jun 7 (sow outdoors) | Jul 24–Aug 21 (sowing) |
| Mustard greens | – | May 10–31 (sow outdoors) | Jul 24–Aug 7 (sowing) |
| Swiss chard | Apr 26–May 10 | May 24–Jun 14 (transplant) May 24–Jun 21 (sow outdoors) | Jul 10–24 (sowing) |
| Beet | – | May 10–Jun 7 (sow outdoors) | Jul 10–24 (sowing) |
| Carrot | – | May 17–Jun 14 (sow outdoors) | Jun 26–Jul 10 (sowing) |
| Radish | – | May 3–Jun 14 (sow outdoors) | Aug 7–21 (sowing) |
| Turnip | – | May 10–31 (sow outdoors) | Jul 10–24 (sowing) |
| Parsnip | – | May 17–Jun 7 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Apr 12–May 10 (sow outdoors) | Jun 26–Jul 10 (sowing) |
| Onion (bulbing) | Mar 15–29 | Apr 26–May 10 (transplant) | – |
| Green onion / scallion | – | Apr 26–May 24 (sow outdoors) | Jul 10–24 (sowing) |
| Leek | Mar 15–29 | May 10–24 (transplant) | – |
| Garlic | – | – | Aug 7–Sep 4 (sowing) |
| Shallot | – | Apr 26–May 10 (transplant) | Aug 7–Sep 4 (sowing) |
| Potato | – | May 10–24 (transplant) | May 29–Jun 12 (transplant) |
| Sweet potato | – | Jun 28–Jul 12 (transplant) | – |
| Sweet corn | – | Jun 14–28 (sow outdoors) | – |
| Bean, bush (snap) | – | Jun 14–28 (sow outdoors) | – |
| Bean, pole | – | Jun 14–28 (sow outdoors) | – |
| Lima bean | – | Jun 21–Jul 5 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 28–Jul 19 (sow outdoors) | – |
| Cucumber | May 10–17 | Jun 14–28 (transplant) Jun 14–28 (sow outdoors) | – |
| Summer squash / zucchini | May 10–17 | Jun 14–28 (transplant) Jun 14–28 (sow outdoors) | – |
| Winter squash | May 10–17 | Jun 14–28 (transplant) Jun 14–28 (sow outdoors) | – |
| Pumpkin | – | Jun 14–28 (sow outdoors) | – |
| Watermelon | May 10–17 | Jun 21–Jul 5 (transplant) Jun 21–Jul 5 (sow outdoors) | – |
| Cantaloupe / muskmelon | May 10–17 | Jun 21–Jul 5 (transplant) Jun 21–Jul 5 (sow outdoors) | – |
| Okra | Apr 26–May 10 | Jun 21–Jul 5 (transplant) Jun 21–Jul 5 (sow outdoors) | – |
| Celery | Mar 15–29 | Jun 14–21 (transplant) | – |
| Basil | Apr 26–May 10 | Jun 14–28 (transplant) Jun 14–28 (sow outdoors) | – |
| Cilantro | – | May 24–Jun 21 (sow outdoors) | Jul 24–Aug 7 (sowing) |
| Parsley | Mar 29–Apr 12 | May 24–Jun 7 (transplant) May 17–Jun 7 (sow outdoors) | – |
| Dill | – | Jun 7–21 (sow outdoors) | Jul 24–Aug 7 (sowing) |
| Sunflower | – | Jun 7–21 (sow outdoors) | – |
| Asparagus (crowns) | – | May 10–24 (transplant) | – |
| Rhubarb (crowns) | – | May 10–24 (transplant) | – |
| Strawberry (plants) | – | May 10–24 (transplant) | Jul 10–Aug 7 (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: Wickiup Dam, OR (NOAA GHCN-Daily ID USC00359316), elevation 4,358 ft, 13.2 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Lemolo Lake 3 NNW, OR | 25 mi | Jun 1 | Sep 23 |
| Toketee Falls, OR | 38 mi | Apr 29 | Oct 18 |
| Oakridge Fish Hatchery, OR | 38 mi | Apr 24 | Oct 24 |
The average last-frost dates of these stations span 45 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97737
When is the last frost in 97737?
The average (50% chance) last spring freeze of 32°F for ZIP 97737 is June 7. For a more cautious planting date, use July 2, when only 1 year in 10 still sees a later freeze.
When is the first frost in 97737?
The average first fall freeze is September 18. In 1 year in 10 it comes by September 3.
What hardiness zone is 97737?
ZIP 97737 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 97737 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
97733 Crescent Lake 97739 La Pine 97707 Sunriver 97709 97731 Beaver Marsh 97463 Oakridge 97735 97413
Other ZIP codes in Klamath County
97601 97603 97604 97621 97622 97623 97624 97625 97626 97627 97632 97633 97634 97639 97731 97733 All Klamath County frost dates · Oregon frost dates
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- 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.