What is the soil temperature in ZIP code 99578 today?

About 24°F on average in the top 4 inches (0–10 cm), low 23°F and high 24°F, from NOAA's GFS model run of Nov 11, 12:00 UTC (7 am Eastern). It is a model value for a grid cell 4.4 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99578?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 2 and 55°F from Jun 4.

ZIP 99578 · Alaska · Nov 11, 2026

Soil temperature for ZIP code 99578

24°Faverage today, 0–4 in deep (modelled)
low 23°F · high 24°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 4.4 km from the ZIP centre point

On a week ago

10° cooler

34°F on Nov 4

5-day mean

27°F

what the verdicts use

Held 55°F last spring

Jun 4

crabgrass germination temperature

What the soil says today

Pre-emergentSeason over
Cool-season seedToo late in the season
Warm-season seedToo cold
TomatoesToo cold
Peas and lettuceToo cold

From the 5-day mean of the modelled 0–4 in layer.

Soil temperature, 0–4 in: last 7 days and next 7

°F, modelled. Dots and line: daily average (dashed = forecast); bars: low to high; green band: 50–55°F.

View as table

Day	Average	Low	High
Nov 4	33.6°F	33.0°F	34.7°F	analysis
Nov 5	32.4°F	32.3°F	32.5°F	analysis
Nov 6	32.2°F	32.1°F	32.3°F	analysis
Nov 7	31.0°F	30.3°F	31.9°F	analysis
Nov 8	28.4°F	27.2°F	30.0°F	analysis
Nov 9	25.5°F	24.4°F	26.7°F	analysis
Nov 10	24.2°F	23.1°F	25.5°F	analysis
Today	23.6°F	22.9°F	24.0°F	analysis
Nov 12	23.3°F	22.8°F	24.1°F	forecast
Nov 13	22.9°F	22.0°F	24.2°F	forecast
Nov 14	19.8°F	18.6°F	21.5°F	forecast
Nov 15	17.4°F	16.4°F	18.1°F	forecast
Nov 16	17.5°F	16.7°F	18.2°F	forecast
Nov 17	19.6°F	19.0°F	20.0°F	forecast

Source: NOAA NCEP GFS 0.25°, 0–10 cm soil temperature, run Nov 11, 12:00 UTC (7 am Eastern).

Spring 2026 threshold dates

From the 5-day mean held for 10 days or more.

Soil	What it means	Held from (spring 2026)
40°F	Peas and lettuce	May 14
50°F	Pre-emergent window opens	Jun 2
55°F	Crabgrass can germinate	Jun 4
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

Nearby ZIP codes

Today's modelled average.

99680 26°F · 99634 23°F · 99655 23°F · 99559 23°F · 99609 24°F · 99641 24°F

More: crabgrass timing in Alaska · every Alaska city · how accurate the model is.

Questions

What is the soil temperature in ZIP code 99578 today?: About 24°F on average in the top 4 inches (0–10 cm), low 23°F and high 24°F, from NOAA's GFS model run of Nov 11, 12:00 UTC (7 am Eastern). It is a model value for a grid cell 4.4 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99578?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 2 and 55°F from Jun 4.

Data: Global Forecast System (GFS) 0.25°, soil temperature 0–10 cm (TSOIL) (NOAA National Centers for Environmental Prediction (NCEP)); 2025 Gazetteer ZIP Code Tabulation Areas (ZCTA) and 2024 cartographic boundary state outlines (U.S. Census Bureau).