Frost dates for ZIP 99152 (Metaline, WA)
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, Boundary Dam, WA (11 miles away).
- Average last spring frostMay 450% chance of a 32°F freeze after this date
- Average first fall frostOct 450% chance of a 32°F freeze by this date
- Growing season (frost-free)153 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 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 99152 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) | Apr 20 |
| 50% (the "average" last frost) | May 4 |
| 10% (cautious: only 1 year in 10 freezes later) | May 18 |
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 21 |
| 50% (the "average" first frost) | Oct 4 |
| 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) | May 19 | Sep 21 |
| 32°F (freeze) | May 4 | Oct 4 |
| 28°F (hard freeze) | Apr 17 | Oct 19 |
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 99152
Dates count from your average last spring frost (May 4) and first fall frost (Oct 4). 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 9–23 | May 11–25 (transplant) | – |
| Pepper (sweet and hot) | Feb 23–Mar 9 | May 18–Jun 1 (transplant) | – |
| Eggplant | Feb 23–Mar 9 | May 18–Jun 1 (transplant) | – |
| Tomatillo | Mar 9–23 | May 11–25 (transplant) | – |
| Lettuce | Mar 9–23 | Apr 13–May 4 (transplant) Apr 6–May 18 (sow outdoors) | Aug 9–30 (transplant) Jul 26–Aug 23 (sowing) |
| Spinach | – | Mar 23–Apr 13 (sow outdoors) | Aug 9–30 (sowing) |
| Kale | Mar 9–23 | Apr 6–20 (transplant) Apr 6–20 (sow outdoors) | Jul 12–Aug 9 (transplant) Jun 28–Jul 26 (sowing) |
| Collards | Mar 9–23 | Apr 6–May 4 (transplant) Apr 6–May 4 (sow outdoors) | Jul 12–Aug 9 (transplant) Jun 28–Jul 26 (sowing) |
| Broccoli | Feb 23–Mar 9 | Apr 6–20 (transplant) | Jun 28–Jul 26 (transplant) |
| Cabbage | Feb 23–Mar 9 | Apr 6–20 (transplant) | Jun 28–Jul 26 (transplant) |
| Cauliflower | Feb 23–Mar 9 | Apr 20–May 4 (transplant) | Jun 28–Jul 26 (transplant) |
| Brussels sprouts | Feb 9–23 | Apr 6–20 (transplant) | Jun 14–Jul 5 (transplant) |
| Kohlrabi | Mar 9–23 | Apr 6–20 (transplant) Apr 6–20 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Bok choy / Asian greens | – | Apr 6–20 (sow outdoors) | Aug 9–23 (sowing) |
| Arugula | – | Apr 6–May 4 (sow outdoors) | Aug 9–Sep 6 (sowing) |
| Mustard greens | – | Apr 6–27 (sow outdoors) | Aug 9–23 (sowing) |
| Swiss chard | Mar 23–Apr 6 | Apr 20–May 11 (transplant) Apr 20–May 18 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Beet | – | Apr 6–May 4 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Carrot | – | Apr 13–May 11 (sow outdoors) | Jul 12–26 (sowing) |
| Radish | – | Mar 30–May 11 (sow outdoors) | Aug 23–Sep 6 (sowing) |
| Turnip | – | Apr 6–27 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Parsnip | – | Apr 13–May 4 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Mar 9–Apr 6 (sow outdoors) | Jul 12–26 (sowing) |
| Onion (bulbing) | Feb 9–23 | Mar 23–Apr 6 (transplant) | – |
| Green onion / scallion | – | Mar 23–Apr 20 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Leek | Feb 9–23 | Apr 6–20 (transplant) | – |
| Garlic | – | – | Aug 23–Sep 20 (sowing) |
| Shallot | – | Mar 23–Apr 6 (transplant) | Aug 23–Sep 20 (sowing) |
| Potato | – | Apr 6–20 (transplant) | Jun 14–28 (transplant) |
| Sweet potato | – | May 25–Jun 8 (transplant) | – |
| Sweet corn | – | May 11–25 (sow outdoors) | – |
| Bean, bush (snap) | – | May 11–25 (sow outdoors) | – |
| Bean, pole | – | May 11–25 (sow outdoors) | – |
| Lima bean | – | May 18–Jun 1 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 25–Jun 15 (sow outdoors) | – |
| Cucumber | Apr 6–13 | May 11–25 (transplant) May 11–25 (sow outdoors) | – |
| Summer squash / zucchini | Apr 6–13 | May 11–25 (transplant) May 11–25 (sow outdoors) | – |
| Winter squash | Apr 6–13 | May 11–25 (transplant) May 11–25 (sow outdoors) | – |
| Pumpkin | – | May 11–25 (sow outdoors) | – |
| Watermelon | Apr 6–13 | May 18–Jun 1 (transplant) May 18–Jun 1 (sow outdoors) | – |
| Cantaloupe / muskmelon | Apr 6–13 | May 18–Jun 1 (transplant) May 18–Jun 1 (sow outdoors) | – |
| Okra | Mar 23–Apr 6 | May 18–Jun 1 (transplant) May 18–Jun 1 (sow outdoors) | – |
| Celery | Feb 9–23 | May 11–18 (transplant) | – |
| Basil | Mar 23–Apr 6 | May 11–25 (transplant) May 11–25 (sow outdoors) | – |
| Cilantro | – | Apr 20–May 18 (sow outdoors) | Aug 9–23 (sowing) |
| Parsley | Feb 23–Mar 9 | Apr 20–May 4 (transplant) Apr 13–May 4 (sow outdoors) | – |
| Dill | – | May 4–18 (sow outdoors) | Aug 9–23 (sowing) |
| Sunflower | – | May 4–18 (sow outdoors) | – |
| Asparagus (crowns) | – | Apr 6–20 (transplant) | – |
| Rhubarb (crowns) | – | Apr 6–20 (transplant) | – |
| Strawberry (plants) | – | Apr 6–20 (transplant) | Jul 26–Aug 23 (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: Boundary Dam, WA (NOAA GHCN-Daily ID USC00450844), elevation 1,837 ft, 11.1 miles from the ZIP's center point. NOAA completeness flag: S (standard, 24+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Northport, WA | 20 mi | May 8 | Oct 1 |
| Colville, WA | 31 mi | May 2 | Oct 2 |
| Chewelah, WA | 42 mi | May 16 | Sep 15 |
The average last-frost dates of these stations span 14 days, a rough guide to local variation. See data sources & methods.
Frost questions for 99152
When is the last frost in 99152?
The average (50% chance) last spring freeze of 32°F for ZIP 99152 is May 4. For a more cautious planting date, use May 18, when only 1 year in 10 still sees a later freeze.
When is the first frost in 99152?
The average first fall freeze is October 4. In 1 year in 10 it comes by September 21.
What hardiness zone is 99152?
ZIP 99152 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 99152 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
99139 Ione 99153 Metaline Falls 99157 Northport 99114 Colville 99119 Cusick 83848 99126 99151 Marcus
Other ZIP codes in Pend Oreille County
99119 99139 99153 99156 99180 All Pend Oreille County frost dates · Washington frost dates
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