What is the soil temperature in ZIP code 83602 today?

About 51°F on average in the top 4 inches (0–10 cm), low 47°F and high 56°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 13.1 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 83602?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 20 and 55°F from May 4.

ZIP 83602 · Emmett, ID · Nov 11, 2026

Soil temperature for ZIP code 83602

51°Faverage today, 0–4 in deep (modelled)
low 47°F · high 56°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 13.1 km from the ZIP centre point

On a week ago

3° warmer

47°F on Nov 4

5-day mean

49°F

what the verdicts use

Held 55°F last spring

May 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 lettuceWarm enough

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	47.2°F	44.9°F	51.7°F	analysis
Nov 5	46.7°F	43.5°F	51.8°F	analysis
Nov 6	45.1°F	41.7°F	50.2°F	analysis
Nov 7	46.8°F	43.3°F	52.8°F	analysis
Nov 8	48.1°F	44.9°F	52.4°F	analysis
Nov 9	48.4°F	45.6°F	52.6°F	analysis
Nov 10	49.1°F	45.8°F	54.3°F	analysis
Today	50.6°F	47.4°F	55.7°F	analysis
Nov 12	49.8°F	46.9°F	54.0°F	forecast
Nov 13	49.4°F	46.5°F	54.2°F	forecast
Nov 14	50.8°F	48.4°F	53.4°F	forecast
Nov 15	45.9°F	43.1°F	50.2°F	forecast
Nov 16	47.2°F	45.8°F	49.9°F	forecast
Nov 17	44.6°F	44.0°F	46.2°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	Feb 26
50°F	Pre-emergent window opens	Mar 20
55°F	Crabgrass can germinate	May 4
60°F	Tomatoes	Jun 14
65°F	Warm-season grass seed	Jun 16

Boise, ID, 53 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

83670 51°F · 83666 48°F · 83629 51°F · 83657 47°F · 83622 48°F · 83617 50°F · 83631 46°F · 83616 51°F

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

Questions

What is the soil temperature in ZIP code 83602 today?: About 51°F on average in the top 4 inches (0–10 cm), low 47°F and high 56°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 13.1 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 83602?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 20 and 55°F from May 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).