Frost dates for ZIP 57469 (Redfield, SD)
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, Redfield, SD (2 miles away).
- Average last spring frostMay 850% chance of a 32°F freeze after this date
- Average first fall frostOct 150% chance of a 32°F freeze by this date
- Growing season (frost-free)145 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 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 57469 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 early May.
Fertilizer window
Lawn region: North (cool-season). 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 25 |
| 50% (the "average" last frost) | May 8 |
| 10% (cautious: only 1 year in 10 freezes later) | May 21 |
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 19 |
| 50% (the "average" first frost) | Oct 1 |
| 90% (late: most years have frozen by now) | Oct 13 |
Light frost, freeze and hard freeze
| Threshold | Last spring (50%) | First fall (50%) |
|---|---|---|
| 36°F (light frost possible on clear, calm nights) | May 16 | Sep 23 |
| 32°F (freeze) | May 8 | Oct 1 |
| 28°F (hard freeze) | Apr 29 | Oct 8 |
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 57469
Dates count from your average last spring frost (May 8) and first fall frost (Oct 1). 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 13–27 | May 15–29 (transplant) | – |
| Pepper (sweet and hot) | Feb 27–Mar 13 | May 22–Jun 5 (transplant) | – |
| Eggplant | Feb 27–Mar 13 | May 22–Jun 5 (transplant) | – |
| Tomatillo | Mar 13–27 | May 15–29 (transplant) | – |
| Lettuce | Mar 13–27 | Apr 17–May 8 (transplant) Apr 10–May 22 (sow outdoors) | Aug 6–27 (transplant) Jul 23–Aug 20 (sowing) |
| Spinach | – | Mar 27–Apr 17 (sow outdoors) | Aug 6–27 (sowing) |
| Kale | Mar 13–27 | Apr 10–24 (transplant) Apr 10–24 (sow outdoors) | Jul 9–Aug 6 (transplant) Jun 25–Jul 23 (sowing) |
| Collards | Mar 13–27 | Apr 10–May 8 (transplant) Apr 10–May 8 (sow outdoors) | Jul 9–Aug 6 (transplant) Jun 25–Jul 23 (sowing) |
| Broccoli | Feb 27–Mar 13 | Apr 10–24 (transplant) | Jun 25–Jul 23 (transplant) |
| Cabbage | Feb 27–Mar 13 | Apr 10–24 (transplant) | Jun 25–Jul 23 (transplant) |
| Cauliflower | Feb 27–Mar 13 | Apr 24–May 8 (transplant) | Jun 25–Jul 23 (transplant) |
| Brussels sprouts | Feb 13–27 | Apr 10–24 (transplant) | Jun 11–Jul 2 (transplant) |
| Kohlrabi | Mar 13–27 | Apr 10–24 (transplant) Apr 10–24 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Bok choy / Asian greens | – | Apr 10–24 (sow outdoors) | Aug 6–20 (sowing) |
| Arugula | – | Apr 10–May 8 (sow outdoors) | Aug 6–Sep 3 (sowing) |
| Mustard greens | – | Apr 10–May 1 (sow outdoors) | Aug 6–20 (sowing) |
| Swiss chard | Mar 27–Apr 10 | Apr 24–May 15 (transplant) Apr 24–May 22 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Beet | – | Apr 10–May 8 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Carrot | – | Apr 17–May 15 (sow outdoors) | Jul 9–23 (sowing) |
| Radish | – | Apr 3–May 15 (sow outdoors) | Aug 20–Sep 3 (sowing) |
| Turnip | – | Apr 10–May 1 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Parsnip | – | Apr 17–May 8 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Mar 13–Apr 10 (sow outdoors) | Jul 9–23 (sowing) |
| Onion (bulbing) | Feb 13–27 | Mar 27–Apr 10 (transplant) | – |
| Green onion / scallion | – | Mar 27–Apr 24 (sow outdoors) | Jul 23–Aug 6 (sowing) |
| Leek | Feb 13–27 | Apr 10–24 (transplant) | – |
| Garlic | – | – | Aug 20–Sep 17 (sowing) |
| Shallot | – | Mar 27–Apr 10 (transplant) | Aug 20–Sep 17 (sowing) |
| Potato | – | Apr 10–24 (transplant) | Jun 11–25 (transplant) |
| Sweet potato | – | May 29–Jun 12 (transplant) | – |
| Sweet corn | – | May 15–29 (sow outdoors) | – |
| Bean, bush (snap) | – | May 15–29 (sow outdoors) | – |
| Bean, pole | – | May 15–29 (sow outdoors) | – |
| Lima bean | – | May 22–Jun 5 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | May 29–Jun 19 (sow outdoors) | – |
| Cucumber | Apr 10–17 | May 15–29 (transplant) May 15–29 (sow outdoors) | – |
| Summer squash / zucchini | Apr 10–17 | May 15–29 (transplant) May 15–29 (sow outdoors) | – |
| Winter squash | Apr 10–17 | May 15–29 (transplant) May 15–29 (sow outdoors) | – |
| Pumpkin | – | May 15–29 (sow outdoors) | – |
| Watermelon | Apr 10–17 | May 22–Jun 5 (transplant) May 22–Jun 5 (sow outdoors) | – |
| Cantaloupe / muskmelon | Apr 10–17 | May 22–Jun 5 (transplant) May 22–Jun 5 (sow outdoors) | – |
| Okra | Mar 27–Apr 10 | May 22–Jun 5 (transplant) May 22–Jun 5 (sow outdoors) | – |
| Celery | Feb 13–27 | May 15–22 (transplant) | – |
| Basil | Mar 27–Apr 10 | May 15–29 (transplant) May 15–29 (sow outdoors) | – |
| Cilantro | – | Apr 24–May 22 (sow outdoors) | Aug 6–20 (sowing) |
| Parsley | Feb 27–Mar 13 | Apr 24–May 8 (transplant) Apr 17–May 8 (sow outdoors) | – |
| Dill | – | May 8–22 (sow outdoors) | Aug 6–20 (sowing) |
| Sunflower | – | May 8–22 (sow outdoors) | – |
| Asparagus (crowns) | – | Apr 10–24 (transplant) | – |
| Rhubarb (crowns) | – | Apr 10–24 (transplant) | – |
| Strawberry (plants) | – | Apr 10–24 (transplant) | Jul 23–Aug 20 (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: Redfield, SD (NOAA GHCN-Daily ID USC00397052), elevation 1,309 ft, 2.4 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Mellette 4 W, SD | 21 mi | May 11 | Sep 27 |
| Turton, SD | 27 mi | May 7 | Oct 3 |
| Faulkton 1 NW, SD | 30 mi | May 10 | Sep 28 |
The average last-frost dates of these stations span 4 days, a rough guide to local variation. See data sources & methods.
Frost questions for 57469
When is the last frost in 57469?
The average (50% chance) last spring freeze of 32°F for ZIP 57469 is May 8. For a more cautious planting date, use May 21, when only 1 year in 10 still sees a later freeze.
When is the first frost in 57469?
The average first fall freeze is October 1. In 1 year in 10 it comes by September 19.
What hardiness zone is 57469?
ZIP 57469 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 57469 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
57476 Tulare 57424 Ashton 57440 Frankfort 57470 Rockham 57348 Hitchcock 57465 Northville 57461 Mellette 57477 Turton
Other ZIP codes in Spink County
57424 57429 57434 57436 57440 57461 57465 57476 57477 All Spink County frost dates · South Dakota frost dates
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