Fall in zone 2aPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 99704 (Anderson, AK)
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, Clear Sky, AK (3 miles away).
- Average last spring frostMay 2450% chance of a 32°F freeze after this date
- Average first fall frostSep 450% chance of a 32°F freeze by this date
- Growing season (frost-free)100 daysmedian, 32°F threshold
- USDA hardiness zone2a-50 to -45°F avg. coldest night
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Frost and freeze alerts from the NWS forecast for 99704, the spring soil-temperature heads-up for pre-emergent, and a short weekly yard-timing email.
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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 99704 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) | May 11 |
| 50% (the "average" last frost) | May 24 |
| 10% (cautious: only 1 year in 10 freezes later) | Jun 12 |
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) | Aug 19 |
| 50% (the "average" first frost) | Sep 4 |
| 90% (late: most years have frozen by now) | Sep 18 |
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) | May 24 | Sep 4 |
| 28°F (hard freeze) | May 11 | Sep 15 |
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 99704
Dates count from your average last spring frost (May 24) and first fall frost (Sep 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 29–Apr 12 | May 31–Jun 14 (transplant) | – |
| Pepper (sweet and hot) | Mar 15–29 | Jun 7–21 (transplant) | – |
| Eggplant | Mar 15–29 | Jun 7–21 (transplant) | – |
| Tomatillo | Mar 29–Apr 12 | May 31–Jun 14 (transplant) | – |
| Lettuce | Mar 29–Apr 12 | May 3–24 (transplant) Apr 26–Jun 7 (sow outdoors) | Jul 10–31 (transplant) Jun 26–Jul 24 (sowing) |
| Spinach | – | Apr 12–May 3 (sow outdoors) | Jul 10–31 (sowing) |
| Kale | Mar 29–Apr 12 | Apr 26–May 10 (transplant) Apr 26–May 10 (sow outdoors) | Jun 12–Jul 10 (transplant) May 29–Jun 26 (sowing) |
| Collards | Mar 29–Apr 12 | Apr 26–May 24 (transplant) Apr 26–May 24 (sow outdoors) | Jun 12–Jul 10 (transplant) May 29–Jun 26 (sowing) |
| Broccoli | Mar 15–29 | Apr 26–May 10 (transplant) | May 29–Jun 26 (transplant) |
| Cabbage | Mar 15–29 | Apr 26–May 10 (transplant) | May 29–Jun 26 (transplant) |
| Cauliflower | Mar 15–29 | May 10–24 (transplant) | May 29–Jun 26 (transplant) |
| Brussels sprouts | Mar 1–15 | Apr 26–May 10 (transplant) | May 15–Jun 5 (transplant) |
| Kohlrabi | Mar 29–Apr 12 | Apr 26–May 10 (transplant) Apr 26–May 10 (sow outdoors) | Jun 26–Jul 10 (sowing) |
| Bok choy / Asian greens | – | Apr 26–May 10 (sow outdoors) | Jul 10–24 (sowing) |
| Arugula | – | Apr 26–May 24 (sow outdoors) | Jul 10–Aug 7 (sowing) |
| Mustard greens | – | Apr 26–May 17 (sow outdoors) | Jul 10–24 (sowing) |
| Swiss chard | Apr 12–26 | May 10–31 (transplant) May 10–Jun 7 (sow outdoors) | Jun 26–Jul 10 (sowing) |
| Beet | – | Apr 26–May 24 (sow outdoors) | Jun 26–Jul 10 (sowing) |
| Carrot | – | May 3–31 (sow outdoors) | Jun 12–26 (sowing) |
| Radish | – | Apr 19–May 31 (sow outdoors) | Jul 24–Aug 7 (sowing) |
| Turnip | – | Apr 26–May 17 (sow outdoors) | Jun 26–Jul 10 (sowing) |
| Parsnip | – | May 3–24 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Mar 29–Apr 26 (sow outdoors) | Jun 12–26 (sowing) |
| Onion (bulbing) | Mar 1–15 | Apr 12–26 (transplant) | – |
| Green onion / scallion | – | Apr 12–May 10 (sow outdoors) | Jun 26–Jul 10 (sowing) |
| Leek | Mar 1–15 | Apr 26–May 10 (transplant) | – |
| Garlic | – | – | Jul 24–Aug 21 (sowing) |
| Shallot | – | Apr 12–26 (transplant) | Jul 24–Aug 21 (sowing) |
| Potato | – | Apr 26–May 10 (transplant) | May 15–29 (transplant) |
| Sweet potato | – | Jun 14–28 (transplant) | – |
| Sweet corn | – | May 31–Jun 14 (sow outdoors) | – |
| Bean, bush (snap) | – | May 31–Jun 14 (sow outdoors) | – |
| Bean, pole | – | May 31–Jun 14 (sow outdoors) | – |
| Lima bean | – | Jun 7–21 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 14–Jul 5 (sow outdoors) | – |
| Cucumber | Apr 26–May 3 | May 31–Jun 14 (transplant) May 31–Jun 14 (sow outdoors) | – |
| Summer squash / zucchini | Apr 26–May 3 | May 31–Jun 14 (transplant) May 31–Jun 14 (sow outdoors) | – |
| Winter squash | Apr 26–May 3 | May 31–Jun 14 (transplant) May 31–Jun 14 (sow outdoors) | – |
| Pumpkin | – | May 31–Jun 14 (sow outdoors) | – |
| Watermelon | Apr 26–May 3 | Jun 7–21 (transplant) Jun 7–21 (sow outdoors) | – |
| Cantaloupe / muskmelon | Apr 26–May 3 | Jun 7–21 (transplant) Jun 7–21 (sow outdoors) | – |
| Okra | Apr 12–26 | Jun 7–21 (transplant) Jun 7–21 (sow outdoors) | – |
| Celery | Mar 1–15 | May 31–Jun 7 (transplant) | – |
| Basil | Apr 12–26 | May 31–Jun 14 (transplant) May 31–Jun 14 (sow outdoors) | – |
| Cilantro | – | May 10–Jun 7 (sow outdoors) | Jul 10–24 (sowing) |
| Parsley | Mar 15–29 | May 10–24 (transplant) May 3–24 (sow outdoors) | – |
| Dill | – | May 24–Jun 7 (sow outdoors) | Jul 10–24 (sowing) |
| Sunflower | – | May 24–Jun 7 (sow outdoors) | – |
| Asparagus (crowns) | – | Apr 26–May 10 (transplant) | – |
| Rhubarb (crowns) | – | Apr 26–May 10 (transplant) | – |
| Strawberry (plants) | – | Apr 26–May 10 (transplant) | Jun 26–Jul 24 (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: Clear Sky, AK (NOAA GHCN-Daily ID USC00502015), elevation 646 ft, 3.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Kobe Hill, AK | 9 mi | May 24 | Sep 2 |
| Nenana Muni AP, AK | 19 mi | May 15 | Sep 11 |
| Healy, AK | 30 mi | May 27 | Sep 1 |
The average last-frost dates of these stations span 12 days, a rough guide to local variation. See data sources & methods.
Frost questions for 99704
When is the last frost in 99704?
The average (50% chance) last spring freeze of 32°F for ZIP 99704 is May 24. For a more cautious planting date, use June 12, when only 1 year in 10 still sees a later freeze.
When is the first frost in 99704?
The average first fall freeze is September 4. In 1 year in 10 it comes by August 19.
What hardiness zone is 99704?
ZIP 99704 is in USDA zone 2a (-50 to -45°F average coldest winter night), per the 2023 USDA Plant Hardiness Zone Map ZIP listing.
What is the soil temperature in 99704 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
99744 Anderson 99760 Nenana 99743 Healy 99755 Denali Park 99709 Goldstream 99725 Ester 99775 College 99758 Minto
Other ZIP codes in Denali Borough
99743 99744 99755 All Denali Borough frost dates · Alaska 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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- Weekly yard to-dos
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.