Fall in zone 4bPhoto: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons
Frost dates for ZIP 99674 (Glacier View, 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, Sutton 1 W, AK (29 miles away).
Station is a bit far
The nearest station with freeze normals is over 40 km away, so dates here may be off by a week or more.
- Average last spring frostJun 150% chance of a 32°F freeze after this date
- Average first fall frostSep 650% chance of a 32°F freeze by this date
- Growing season (frost-free)98 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
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 99674 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 20 |
| 50% (the "average" last frost) | Jun 1 |
| 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) | Aug 24 |
| 50% (the "average" first frost) | Sep 6 |
| 90% (late: most years have frozen by now) | Sep 20 |
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) | Jun 1 | Sep 6 |
| 28°F (hard freeze) | May 18 | Sep 21 |
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 99674
Dates count from your average last spring frost (Jun 1) and first fall frost (Sep 6). 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 | Apr 6–20 | Jun 8–22 (transplant) | – |
| Pepper (sweet and hot) | Mar 23–Apr 6 | Jun 15–29 (transplant) | – |
| Eggplant | Mar 23–Apr 6 | Jun 15–29 (transplant) | – |
| Tomatillo | Apr 6–20 | Jun 8–22 (transplant) | – |
| Lettuce | Apr 6–20 | May 11–Jun 1 (transplant) May 4–Jun 15 (sow outdoors) | Jul 12–Aug 2 (transplant) Jun 28–Jul 26 (sowing) |
| Spinach | – | Apr 20–May 11 (sow outdoors) | Jul 12–Aug 2 (sowing) |
| Kale | Apr 6–20 | May 4–18 (transplant) May 4–18 (sow outdoors) | Jun 14–Jul 12 (transplant) May 31–Jun 28 (sowing) |
| Collards | Apr 6–20 | May 4–Jun 1 (transplant) May 4–Jun 1 (sow outdoors) | Jun 14–Jul 12 (transplant) |
| Broccoli | Mar 23–Apr 6 | May 4–18 (transplant) | May 31–Jun 28 (transplant) |
| Cabbage | Mar 23–Apr 6 | May 4–18 (transplant) | May 31–Jun 28 (transplant) |
| Cauliflower | Mar 23–Apr 6 | May 18–Jun 1 (transplant) | – |
| Brussels sprouts | Mar 9–23 | May 4–18 (transplant) | – |
| Kohlrabi | Apr 6–20 | May 4–18 (transplant) May 4–18 (sow outdoors) | Jun 28–Jul 12 (sowing) |
| Bok choy / Asian greens | – | May 4–18 (sow outdoors) | Jul 12–26 (sowing) |
| Arugula | – | May 4–Jun 1 (sow outdoors) | Jul 12–Aug 9 (sowing) |
| Mustard greens | – | May 4–25 (sow outdoors) | Jul 12–26 (sowing) |
| Swiss chard | Apr 20–May 4 | May 18–Jun 8 (transplant) May 18–Jun 15 (sow outdoors) | Jun 28–Jul 12 (sowing) |
| Beet | – | May 4–Jun 1 (sow outdoors) | Jun 28–Jul 12 (sowing) |
| Carrot | – | May 11–Jun 8 (sow outdoors) | Jun 14–28 (sowing) |
| Radish | – | Apr 27–Jun 8 (sow outdoors) | Jul 26–Aug 9 (sowing) |
| Turnip | – | May 4–25 (sow outdoors) | Jun 28–Jul 12 (sowing) |
| Parsnip | – | May 11–Jun 1 (sow outdoors) | – |
| Pea (garden, snap, snow) | – | Apr 6–May 4 (sow outdoors) | Jun 14–28 (sowing) |
| Onion (bulbing) | Mar 9–23 | Apr 20–May 4 (transplant) | – |
| Green onion / scallion | – | Apr 20–May 18 (sow outdoors) | Jun 28–Jul 12 (sowing) |
| Leek | Mar 9–23 | May 4–18 (transplant) | – |
| Garlic | – | – | Jul 26–Aug 23 (sowing) |
| Shallot | – | Apr 20–May 4 (transplant) | Jul 26–Aug 23 (sowing) |
| Potato | – | May 4–18 (transplant) | – |
| Sweet potato | – | Jun 22–Jul 6 (transplant) | – |
| Sweet corn | – | Jun 8–22 (sow outdoors) | – |
| Bean, bush (snap) | – | Jun 8–22 (sow outdoors) | – |
| Bean, pole | – | Jun 8–22 (sow outdoors) | – |
| Lima bean | – | Jun 15–29 (sow outdoors) | – |
| Southern pea (cowpea, black-eyed pea) | – | Jun 22–Jul 13 (sow outdoors) | – |
| Cucumber | May 4–11 | Jun 8–22 (transplant) Jun 8–22 (sow outdoors) | – |
| Summer squash / zucchini | May 4–11 | Jun 8–22 (transplant) Jun 8–22 (sow outdoors) | – |
| Winter squash | May 4–11 | Jun 8–22 (transplant) Jun 8–22 (sow outdoors) | – |
| Pumpkin | – | Jun 8–22 (sow outdoors) | – |
| Watermelon | May 4–11 | Jun 15–29 (transplant) Jun 15–29 (sow outdoors) | – |
| Cantaloupe / muskmelon | May 4–11 | Jun 15–29 (transplant) Jun 15–29 (sow outdoors) | – |
| Okra | Apr 20–May 4 | Jun 15–29 (transplant) Jun 15–29 (sow outdoors) | – |
| Celery | Mar 9–23 | Jun 8–15 (transplant) | – |
| Basil | Apr 20–May 4 | Jun 8–22 (transplant) Jun 8–22 (sow outdoors) | – |
| Cilantro | – | May 18–Jun 15 (sow outdoors) | Jul 12–26 (sowing) |
| Parsley | Mar 23–Apr 6 | May 18–Jun 1 (transplant) May 11–Jun 1 (sow outdoors) | – |
| Dill | – | Jun 1–15 (sow outdoors) | Jul 12–26 (sowing) |
| Sunflower | – | Jun 1–15 (sow outdoors) | – |
| Asparagus (crowns) | – | May 4–18 (transplant) | – |
| Rhubarb (crowns) | – | May 4–18 (transplant) | – |
| Strawberry (plants) | – | May 4–18 (transplant) | Jun 28–Jul 26 (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: Sutton 1 W, AK (NOAA GHCN-Daily ID USC00508915), elevation 550 ft, 29.0 miles from the ZIP's center point. NOAA completeness flag: R (representative, 10+ years).
Nearby stations
| Station | Distance | Last frost (50%) | First frost (50%) |
|---|---|---|---|
| Lazy Mtn, AK | 32 mi | May 22 | Sep 16 |
| Palmer Muni AP, AK | 34 mi | May 6 | Sep 25 |
| Palmer Job Corps, AK | 34 mi | Apr 24 | Oct 4 |
The average last-frost dates of these stations span 39 days, a rough guide to local variation. See data sources & methods.
Frost questions for 99674
When is the last frost in 99674?
The average (50% chance) last spring freeze of 32°F for ZIP 99674 is June 1. 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 99674?
The average first fall freeze is September 6. In 1 year in 10 it comes by August 24.
What hardiness zone is 99674?
ZIP 99674 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 99674 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
99645 Knik River 99574 Cordova 99567 Anchorage 99654 Tanaina 99577 Anchorage 99587 Anchorage 99693 Whittier 99688 Willow
Other ZIP codes in Matanuska-Susitna Borough
99623 99645 99652 99654 99667 99676 99683 99688 99694 99729 All Matanuska-Susitna Borough frost dates · Alaska frost dates
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