Fall in zone 4bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 59339 (Lindsay, MT)
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, Terry 21 NNW, MT (15 miles away).
- Average last spring frostMay 2650% 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)113 daysmedian, 32°F threshold
- USDA hardiness zone4b-25 to -20°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
47°F Below 50°F
24-hour average · latest 48°F, as of Oct 18, 2:00 AM CDT
Measured at USDA NRCS SCAN station Lindsay, 4 mi away. Daily averages: Thu 45°, Fri 43°, Sat 46°.
4-inch depth
45°F Below 50°F
24-hour average · latest 47°F, as of Oct 18, 2:00 AM CDT
Measured at USDA NRCS SCAN station Lindsay, 4 mi away. Daily averages: Thu 45°, Fri 43°, Sat 45°.
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 59339 load here. You can also open the NWS forecast for this ZIP.
Pre-emergent
Soil is 45°F at 4 inches. Fall pre-emergent window is mostly past. Next: spring, when soil reaches 50°F (typically 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) | May 13 |
| 50% (the "average" last frost) | May 26 |
| 10% (cautious: only 1 year in 10 freezes later) | Jun 13 |
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 1 |
| 50% (the "average" first frost) | Sep 17 |
| 90% (late: most years have frozen by now) | Sep 29 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | Jun 7 | Sep 5 |
| 32°F (freeze) | May 26 | Sep 17 |
| 28°F (hard freeze) | May 15 | Sep 27 |
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 59339
Dates count from your average last spring frost (May 26) 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 | Mar 31–Apr 14 | Jun 2–16 (transplant) | – |
| Pepper (sweet and hot) | Mar 17–31 | Jun 9–23 (transplant) | – |
| Eggplant | Mar 17–31 | Jun 9–23 (transplant) | – |
| Tomatillo | Mar 31–Apr 14 | Jun 2–16 (transplant) | – |
| Lettuce | Mar 31–Apr 14 | May 5–26 (transplant) Apr 28–Jun 9 (sow outdoors) | Jul 23–Aug 13 (transplant) Jul 9–Aug 6 (sowing) |
| Spinach | – | Apr 14–May 5 (sow outdoors) | Jul 23–Aug 13 (sowing) |
| Kale | Mar 31–Apr 14 | Apr 28–May 12 (transplant) Apr 28–May 12 (sow outdoors) | Jun 25–Jul 23 (transplant) Jun 11–Jul 9 (sowing) |
| Collards | Mar 31–Apr 14 | Apr 28–May 26 (transplant) Apr 28–May 26 (sow outdoors) | Jun 25–Jul 23 (transplant) Jun 11–Jul 9 (sowing) |
| Broccoli | Mar 17–31 | Apr 28–May 12 (transplant) | Jun 11–Jul 9 (transplant) |
| Cabbage | Mar 17–31 | Apr 28–May 12 (transplant) | Jun 11–Jul 9 (transplant) |
| Cauliflower | Mar 17–31 | May 12–26 (transplant) | Jun 11–Jul 9 (transplant) |
| Brussels sprouts | Mar 3–17 | Apr 28–May 12 (transplant) | May 28–Jun 18 (transplant) |
| Kohlrabi | Mar 31–Apr 14 | Apr 28–May 12 (transplant) Apr 28–May 12 (sow outdoors) | Jul 9–23 (sowing) |
| Bok choy / Asian greens | – | Apr 28–May 12 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Arugula | – | Apr 28–May 26 (sow outdoors) | Jul 23–Aug 20 (sowing) |
| Mustard greens | – | Apr 28–May 19 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Swiss chard | Apr 14–28 | May 12–Jun 2 (transplant) May 12–Jun 9 (sow outdoors) | Jul 9–23 (sowing) |
| Beet | – | Apr 28–May 26 (sow outdoors) | Jul 9–23 (sowing) |
| Carrot | – | May 5–Jun 2 (sow outdoors) | Jun 25–Jul 9 (sowing) |
| Radish | – | Apr 21–Jun 2 (sow outdoors) | Aug 6–20 (sowing) |
| Turnip | – | Apr 28–May 19 (sow outdoors) | Jul 9–23 (sowing) |
| Parsnip | – | May 5–26 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Mar 31–Apr 28 (sow outdoors) | Jun 25–Jul 9 (sowing) |
| Onion (bulbing) | Mar 3–17 | Apr 14–28 (transplant) | – |
| Green onion / scallion | – | Apr 14–May 12 (sow outdoors) | Jul 9–23 (sowing) |
| Leek | Mar 3–17 | Apr 28–May 12 (transplant) | – |
| Garlic | – | – | Aug 6–Sep 3 (sowing) |
| Shallot | – | Apr 14–28 (transplant) | Aug 6–Sep 3 (sowing) |
| Potato | – | Apr 28–May 12 (transplant) | May 28–Jun 11 (transplant) |
| Sweet potato | – | Jun 16–30 (transplant) | – |
| Sweet corn | – | Jun 2–16 (sow outdoors) | – |
| Bean, bush (snap) | – | Jun 2–16 (sow outdoors) | – |
| Bean, pole | – | Jun 2–16 (sow outdoors) | – |
| Lima bean | – | Jun 9–23 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 16–Jul 7 (sow outdoors) | – |
| Cucumber | Apr 28–May 5 | Jun 2–16 (transplant) Jun 2–16 (sow outdoors) | – |
| Summer squash / zucchini | Apr 28–May 5 | Jun 2–16 (transplant) Jun 2–16 (sow outdoors) | – |
| Winter squash | Apr 28–May 5 | Jun 2–16 (transplant) Jun 2–16 (sow outdoors) | – |
| Pumpkin | – | Jun 2–16 (sow outdoors) | – |
| Watermelon | Apr 28–May 5 | Jun 9–23 (transplant) Jun 9–23 (sow outdoors) | – |
| Cantaloupe / muskmelon | Apr 28–May 5 | Jun 9–23 (transplant) Jun 9–23 (sow outdoors) | – |
| Okra | Apr 14–28 | Jun 9–23 (transplant) Jun 9–23 (sow outdoors) | – |
| Celery | Mar 3–17 | Jun 2–9 (transplant) | – |
| Basil | Apr 14–28 | Jun 2–16 (transplant) Jun 2–16 (sow outdoors) | – |
| Cilantro | – | May 12–Jun 9 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Parsley | Mar 17–31 | May 12–26 (transplant) May 5–26 (sow outdoors) | – |
| Dill | – | May 26–Jun 9 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Sunflower | – | May 26–Jun 9 (sow outdoors) | – |
| Asparagus (crowns) | – | Apr 28–May 12 (transplant) | – |
| Rhubarb (crowns) | – | Apr 28–May 12 (transplant) | – |
| Strawberry (plants) | – | Apr 28–May 12 (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: Terry 21 NNW, MT (NOAA GHCN-Daily ID USC00248169), elevation 3,142 ft, 15.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Circle, MT | 20 mi | May 17 | Sep 22 |
| Brockway 3 WSW, MT | 27 mi | May 20 | Sep 19 |
| Glendive, MT | 27 mi | May 3 | Oct 4 |
The average last-frost dates of these stations span 23 days, a rough guide to local variation. See data sources & methods.
Frost questions for 59339
When is the last frost in 59339?
The average (50% chance) last spring freeze of 32°F for ZIP 59339 is May 26. For a more cautious planting date, use June 13, when only 1 year in 10 still sees a later freeze.
When is the first frost in 59339?
The average first fall freeze is September 17. In 1 year in 10 it comes by September 1.
What hardiness zone is 59339?
ZIP 59339 is in USDA zone 4b (-25 to -20°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 59339 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
59315 Bloomfield 59330 West Glendive 59349 Terry 59215 Circle 59259 Richey 59214 Brockway 59326 Fallon 59262 Savage
Other ZIP codes in Dawson County
59259 59315 59330 All Dawson County frost dates · Montana 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.