Fall in zone 7bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 97040 (Mosier, 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, Hood Rvr EXP STN, OR (8 miles away).
- Average last spring frostApr 2050% chance of a 32°F freeze after this date
- Average first fall frostOct 1350% chance of a 32°F freeze by this date
- Growing season (frost-free)177 daysmedian, 32°F threshold
- USDA hardiness zone7b5 to 10°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 97040 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 mid-April to mid-May.
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) | Mar 29 |
| 50% (the "average" last frost) | Apr 20 |
| 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) | Sep 30 |
| 50% (the "average" first frost) | Oct 13 |
| 90% (late: most years have frozen by now) | Nov 1 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 7 | Oct 1 |
| 32°F (freeze) | Apr 20 | Oct 13 |
| 28°F (hard freeze) | Mar 20 | Oct 28 |
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 97040
Dates count from your average last spring frost (Apr 20) and first fall frost (Oct 13). 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 23–Mar 9 | Apr 27–May 11 (transplant) | – |
| Pepper (sweet and hot) | Feb 9–23 | May 4–18 (transplant) | – |
| Eggplant | Feb 9–23 | May 4–18 (transplant) | – |
| Tomatillo | Feb 23–Mar 9 | Apr 27–May 11 (transplant) | – |
| Lettuce | Feb 23–Mar 9 | Mar 30–Apr 20 (transplant) Mar 23–May 4 (sow outdoors) | Aug 18–Sep 8 (transplant) Aug 4–Sep 1 (sowing) |
| Spinach | – | Mar 9–30 (sow outdoors) | Aug 18–Sep 8 (sowing) |
| Kale | Feb 23–Mar 9 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | Jul 21–Aug 18 (transplant) Jul 7–Aug 4 (sowing) |
| Collards | Feb 23–Mar 9 | Mar 23–Apr 20 (transplant) Mar 23–Apr 20 (sow outdoors) | Jul 21–Aug 18 (transplant) Jul 7–Aug 4 (sowing) |
| Broccoli | Feb 9–23 | Mar 23–Apr 6 (transplant) | Jul 7–Aug 4 (transplant) |
| Cabbage | Feb 9–23 | Mar 23–Apr 6 (transplant) | Jul 7–Aug 4 (transplant) |
| Cauliflower | Feb 9–23 | Apr 6–20 (transplant) | Jul 7–Aug 4 (transplant) |
| Brussels sprouts | Jan 26–Feb 9 | Mar 23–Apr 6 (transplant) | Jun 23–Jul 14 (transplant) |
| Kohlrabi | Feb 23–Mar 9 | Mar 23–Apr 6 (transplant) Mar 23–Apr 6 (sow outdoors) | Aug 4–18 (sowing) |
| Bok choy / Asian greens | – | Mar 23–Apr 6 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Arugula | – | Mar 23–Apr 20 (sow outdoors) | Aug 18–Sep 15 (sowing) |
| Mustard greens | – | Mar 23–Apr 13 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Swiss chard | Mar 9–23 | Apr 6–27 (transplant) Apr 6–May 4 (sow outdoors) | Aug 4–18 (sowing) |
| Beet | – | Mar 23–Apr 20 (sow outdoors) | Aug 4–18 (sowing) |
| Carrot | – | Mar 30–Apr 27 (sow outdoors) | Jul 21–Aug 4 (sowing) |
| Radish | – | Mar 16–Apr 27 (sow outdoors) | Sep 1–15 (sowing) |
| Turnip | – | Mar 23–Apr 13 (sow outdoors) | Aug 4–18 (sowing) |
| Parsnip | – | Mar 30–Apr 20 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Feb 23–Mar 23 (sow outdoors) | Jul 21–Aug 4 (sowing) |
| Onion (bulbing) | Jan 26–Feb 9 | Mar 9–23 (transplant) | – |
| Green onion / scallion | – | Mar 9–Apr 6 (sow outdoors) | Aug 4–18 (sowing) |
| Leek | Jan 26–Feb 9 | Mar 23–Apr 6 (transplant) | – |
| Garlic | – | – | Sep 1–29 (sowing) |
| Shallot | – | Mar 9–23 (transplant) | Sep 1–29 (sowing) |
| Potato | – | Mar 23–Apr 6 (transplant) | Jun 23–Jul 7 (transplant) |
| Sweet potato | – | May 11–25 (transplant) | – |
| Sweet corn | – | Apr 27–May 11 (sow outdoors) | – |
| Bean, bush (snap) | – | Apr 27–May 11 (sow outdoors) | – |
| Bean, pole | – | Apr 27–May 11 (sow outdoors) | – |
| Lima bean | – | May 4–18 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 11–Jun 1 (sow outdoors) | – |
| Cucumber | Mar 23–30 | Apr 27–May 11 (transplant) Apr 27–May 11 (sow outdoors) | – |
| Summer squash / zucchini | Mar 23–30 | Apr 27–May 11 (transplant) Apr 27–May 11 (sow outdoors) | – |
| Winter squash | Mar 23–30 | Apr 27–May 11 (transplant) Apr 27–May 11 (sow outdoors) | – |
| Pumpkin | – | Apr 27–May 11 (sow outdoors) | – |
| Watermelon | Mar 23–30 | May 4–18 (transplant) May 4–18 (sow outdoors) | – |
| Cantaloupe / muskmelon | Mar 23–30 | May 4–18 (transplant) May 4–18 (sow outdoors) | – |
| Okra | Mar 9–23 | May 4–18 (transplant) May 4–18 (sow outdoors) | – |
| Celery | Jan 26–Feb 9 | Apr 27–May 4 (transplant) | – |
| Basil | Mar 9–23 | Apr 27–May 11 (transplant) Apr 27–May 11 (sow outdoors) | – |
| Cilantro | – | Apr 6–May 4 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Parsley | Feb 9–23 | Apr 6–20 (transplant) Mar 30–Apr 20 (sow outdoors) | – |
| Dill | – | Apr 20–May 4 (sow outdoors) | Aug 18–Sep 1 (sowing) |
| Sunflower | – | Apr 20–May 4 (sow outdoors) | – |
| Asparagus (crowns) | – | Mar 23–Apr 6 (transplant) | – |
| Rhubarb (crowns) | – | Mar 23–Apr 6 (transplant) | – |
| Strawberry (plants) | – | Mar 23–Apr 6 (transplant) | Aug 4–Sep 1 (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: Hood Rvr EXP STN, OR (NOAA GHCN-Daily ID USC00354003), elevation 500 ft, 7.8 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| The Dalles, OR | 9 mi | Apr 14 | Oct 23 |
| The Dalles Muni AP, WA | 11 mi | Apr 11 | Oct 26 |
| Parkdale 1 NNE, OR | 11 mi | May 13 | Oct 3 |
The average last-frost dates of these stations span 33 days, a rough guide to local variation. See data sources & methods.
Frost questions for 97040
When is the last frost in 97040?
The average (50% chance) last spring freeze of 32°F for ZIP 97040 is April 20. 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 97040?
The average first fall freeze is October 13. In 1 year in 10 it comes by September 30.
What hardiness zone is 97040?
ZIP 97040 is in USDA zone 7b (5 to 10°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 97040 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
97031 Hood River 97058 The Dalles 98617 Dallesport 98651 98635 Lyle 98623 98672 White Salmon 97041 Mount Hood
Other ZIP codes in Wasco County
97001 97021 97037 97057 97058 97063 97761 All Wasco 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.