What is the soil temperature in ZIP code 99661 today?

About 32°F on average in the top 4 inches (0–10 cm), low 32°F and high 32°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 2.9 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99661?

The spring window is closed. It opens again when the soil holds 50°F.

ZIP 99661 · Alaska · Nov 11, 2026

Soil temperature for ZIP code 99661

32°Faverage today, 0–4 in deep (modelled)
low 32°F · high 32°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 2.9 km from the ZIP centre point

On a week ago

6° cooler

38°F on Nov 4

5-day mean

32°F

what the verdicts use

Held 55°F last spring

–

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	38.3°F	36.6°F	39.2°F	analysis
Nov 5	35.6°F	34.3°F	37.3°F	analysis
Nov 6	35.4°F	34.8°F	35.7°F	analysis
Nov 7	33.6°F	32.7°F	34.7°F	analysis
Nov 8	32.8°F	32.7°F	32.8°F	analysis
Nov 9	32.3°F	31.8°F	32.7°F	analysis
Nov 10	31.6°F	31.4°F	31.8°F	analysis
Today	32.2°F	32.2°F	32.3°F	analysis
Nov 12	31.8°F	31.4°F	32.1°F	forecast
Nov 13	30.9°F	30.1°F	31.6°F	forecast
Nov 14	30.3°F	30.0°F	30.7°F	forecast
Nov 15	31.3°F	31.0°F	31.5°F	forecast
Nov 16	31.7°F	31.7°F	31.8°F	forecast
Nov 17	31.3°F	30.8°F	31.8°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 3
50°F	Pre-emergent window opens	Jun 6
55°F	Crabgrass can germinate	not reached
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

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

Questions

What is the soil temperature in ZIP code 99661 today?: About 32°F on average in the top 4 inches (0–10 cm), low 32°F and high 32°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 2.9 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99661?: The spring window is closed. It opens again when the soil holds 50°F.

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).