What is the soil temperature in ZIP code 99703 today?

About 20°F on average in the top 4 inches (0–10 cm), low 19°F and high 21°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 11.1 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99703?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 4 and 55°F from Jun 14.

ZIP 99703 · Fairbanks, AK · Nov 11, 2026

Soil temperature for ZIP code 99703

20°Faverage today, 0–4 in deep (modelled)
low 19°F · high 21°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 11.1 km from the ZIP centre point

On a week ago

3° cooler

22°F on Nov 4

5-day mean

21°F

what the verdicts use

Held 55°F last spring

Jun 14

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	22.4°F	21.5°F	23.6°F	analysis
Nov 5	22.6°F	21.7°F	23.5°F	analysis
Nov 6	24.2°F	24.0°F	24.6°F	analysis
Nov 7	24.7°F	24.3°F	25.1°F	analysis
Nov 8	21.1°F	20.1°F	22.8°F	analysis
Nov 9	19.6°F	18.8°F	20.4°F	analysis
Nov 10	19.7°F	19.0°F	20.9°F	analysis
Today	19.7°F	19.3°F	20.6°F	analysis
Nov 12	18.2°F	17.7°F	18.6°F	forecast
Nov 13	16.2°F	15.4°F	17.2°F	forecast
Nov 14	15.6°F	15.0°F	16.1°F	forecast
Nov 15	13.2°F	12.4°F	14.1°F	forecast
Nov 16	12.6°F	12.3°F	13.4°F	forecast
Nov 17	14.7°F	13.6°F	16.2°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 11
50°F	Pre-emergent window opens	Jun 4
55°F	Crabgrass can germinate	Jun 14
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

Fairbanks, AK, 4 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

99701 21°F · 99775 21°F · 99705 20°F · 99725 21°F · 99709 20°F · 99702 21°F · 99790 20°F

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

Questions

What is the soil temperature in ZIP code 99703 today?: About 20°F on average in the top 4 inches (0–10 cm), low 19°F and high 21°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 11.1 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99703?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 4 and 55°F from Jun 14.

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).