Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 99927 — Point Baker, AK

ZIP code 99927 (Point Baker, Prince of Wales-Hyder County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is April 19 and the first fall frost October 25.

Where ZIP 99927 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone8a10 to 15 °F
Coldest night−12.2 to −9.4 °C
Last frostApr 19
First frostOct 25
2012 zone7b

Was 7b on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Point Baker, AK…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Point Baker, AK

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 19median — 50% chance of a later frost
Safe for tender plantsMay 5only 10% chance of frost after
First fall frostOctober 25median — 10% chance by Oct 5
Growing season187 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 3 and returns around November 8.

From the NOAA station Pt Baker, AK — within 1 mile, elevation 20 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 99927

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 8 – Mar 22
SpinachSow outdoors · Mar 8 – Mar 29
Broccoli, cabbageStart indoors · Feb 8 – Feb 22
Broccoli, cabbageTransplant · Mar 29 – Apr 12
Onion setsPlant outdoors · Mar 22 – Apr 5
PotatoesPlant outdoors · Mar 29 – Apr 12
LettuceSow outdoors · Mar 22 – Apr 5
Carrots, beetsSow outdoors · Mar 29 – Apr 12
TomatoesStart indoors · Feb 22 – Mar 8
TomatoesTransplant · Apr 26 – May 10
Peppers, eggplantStart indoors · Feb 8 – Feb 22
Peppers, eggplantTransplant · May 3 – May 17
BeansSow outdoors · Apr 26 – May 10
Sweet cornSow outdoors · Apr 26 – May 10
Cucumbers, squashSow outdoors · Apr 26 – May 10
Fall lettuce, spinachSow outdoors · Aug 30 – Sep 13
GarlicPlant cloves · Oct 11 – Nov 15
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 19) and first fall frost (Oct 25) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

Native plants for zone 8a in Alaska

292 plants native to Alaska, recorded in Alaska, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. Each links to its USDA PLANTS profile.

Trees 16

Alaska cedar75 ft · blooms mid spring · low shade tolerance · to −22 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fblack spruce65 ft · blooms late spring · low shade tolerance · to −79 °Flodgepole pine99 ft · blooms mid summer · high shade tolerance · to −70 °Fmountain hemlock125 ft · blooms early summer · low shade tolerance · to −18 °FPacific silver fir165 ft · blooms late spring · low shade tolerance · to −28 °F

Shrubs 51

alpine bearberry0.5 ft · blooms early spring · medium shade tolerance · to −62 °Falpine laurel1 ft · blooms late spring · low shade tolerance · to −28 °FBarclay's willow15 ft · high shade tolerance · to −43 °Fblack crowberry1 ft · blooms mid summer · high shade tolerance · to −43 °Fblack hawthorn15 ft · blooms mid spring · medium shade tolerance · to −47 °Fbog blueberry2 ft · blooms early summer · medium shade tolerance · to −38 °F

Wildflowers & perennials 125

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine aster0.3 ft · blooms early summer · medium shade tolerance · to −28 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °Falpine sweetvetch2 ft · blooms early summer · high shade tolerance · to −62 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °F

Grasses 89

Alaska brome5 ft · blooms late spring · low shade tolerance · to −18 °FAlaska oniongrass3 ft · blooms mid spring · low shade tolerance · to −33 °FAlpine Meadow-Foxtail0.5 ft · blooms mid spring · medium shade tolerance · to −33 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °Farctic bluegrass2 ft · high shade tolerance · to −62 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Point Baker, AK.

Soil in Point Baker, AK

The soil mapped at the center of ZIP 99927 is Ulloa — moderately decomposed plant material, well drained.

TextureModerately decomposed plant materialtop layer
pH4.0strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter80%high
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Ulloa-Sarkar complex, 5 to 35 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 99927; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Point Baker, AK

Summer high61 °Faverage high, August
Winter low31 °Faverage low, January
Hot days0days a year at 90 °F or more
Freezing nights85nights a year at 32 °F or less
Growing degree days442base 50 °F — the season’s usable heat
Longest day17 h 42 mindaylight on June 21
Shortest day6 h 52 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation82.3 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°32 °FJanuary: average high 38 °F, low 31 °F 38°31° JanFebruary: average high 39 °F, low 31 °F 39°31° FebMarch: average high 41 °F, low 32 °F 41°32° MarApril: average high 47 °F, low 36 °F 47°36° AprMay: average high 53 °F, low 42 °F 53°42° MayJune: average high 57 °F, low 46 °F 57°46° JunJuly: average high 60 °F, low 49 °F 60°49° JulAugust: average high 61 °F, low 49 °F 61°49° AugSeptember: average high 56 °F, low 46 °F 56°46° SepOctober: average high 49 °F, low 40 °F 49°40° OctNovember: average high 42 °F, low 35 °F 42°35° NovDecember: average high 39 °F, low 32 °F 39°32° Dec

Precipitation by month inches

0″2″4″6″8″10″12″January: 8.36 in precipitation 8.4 JanFebruary: 5.24 in precipitation 5.2 FebMarch: 5.06 in precipitation 5.1 MarApril: 4.79 in precipitation 4.8 AprMay: 4.79 in precipitation 4.8 MayJune: 2.91 in precipitation 2.9 JunJuly: 5.02 in precipitation 5.0 JulAugust: 6.60 in precipitation 6.6 AugSeptember: 10.73 in precipitation 10.7 SepOctober: 11.06 in precipitation 11.1 OctNovember: 9.33 in precipitation 9.3 NovDecember: 8.39 in precipitation 8.4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Pt Baker, AK (within 1 mile); precipitation: Pt Baker, AK (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

5 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

998307b
Kake, AK · 35 mi
998337b
Petersburg, AK · 39 mi
998368a
Port Alexander, AK · 41 mi
999188a
Coffman Cove, AK · 45 mi
999257b
Klawock, AK · 60 mi
999197b
Thorne Bay, AK · 64 mi
999217b
Craig, AK · 66 mi
999228a
Hydaburg, AK · 74 mi

Alaska planting zones →

Questions about 99927

What planting zone is ZIP code 99927?

ZIP code 99927 (Point Baker, AK) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Point Baker, AK?

The median last spring frost (32 °F) near 99927 is April 19; after May 5 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Pt Baker station.

When is the first frost in Point Baker, AK?

The median first fall frost near 99927 is October 25, giving a median frost-free growing season of 187 days.

When should I plant tomatoes in 99927?

Start tomato seeds indoors around Feb 22 – Mar 8 and set transplants outside around Apr 26 – May 10, one to three weeks after the median last frost.

How much rain and snow does 99927 get?

About 82.3 inches of precipitation a year (NOAA 1991–2020 normals, Pt Baker station).

How hot do summers get in Point Baker, AK?

The average high peaks at 61 °F in August, with about 0 days a year at 90 °F or more.

What kind of soil does 99927 have?

The USDA soil survey maps Ulloa at the center of ZIP 99927: moderately decomposed plant material, well drained, pH about 4.0 (strongly acidic).

What kind of onions grow in Point Baker, AK?

Long-day onions: the longest day near 99927 is 17 h 42 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 99927 change?

Yes. The 2012 USDA map put 99927 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.