What is the soil temperature in ZIP code 82638 today?

About 46°F on average in the top 4 inches (0–10 cm), low 41°F and high 53°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 6.5 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 82638?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 21 and 55°F from May 26.

ZIP 82638 · Wyoming · Nov 11, 2026

Soil temperature for ZIP code 82638

46°Faverage today, 0–4 in deep (modelled)
low 41°F · high 53°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 6.5 km from the ZIP centre point

On a week ago

4° warmer

42°F on Nov 4

5-day mean

46°F

what the verdicts use

Held 55°F last spring

May 26

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	42.0°F	37.2°F	47.8°F	analysis
Nov 5	43.1°F	37.2°F	50.8°F	analysis
Nov 6	44.6°F	40.2°F	50.0°F	analysis
Nov 7	43.8°F	38.4°F	50.3°F	analysis
Nov 8	44.8°F	39.3°F	52.3°F	analysis
Nov 9	48.3°F	43.6°F	54.6°F	analysis
Nov 10	47.6°F	43.5°F	52.5°F	analysis
Today	46.2°F	40.7°F	53.1°F	analysis
Nov 12	47.5°F	42.0°F	54.4°F	forecast
Nov 13	45.2°F	40.2°F	50.3°F	forecast
Nov 14	46.1°F	42.2°F	51.6°F	forecast
Nov 15	44.3°F	40.0°F	48.3°F	forecast
Nov 16	43.3°F	38.2°F	48.9°F	forecast
Nov 17	43.0°F	37.3°F	49.7°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 28
50°F	Pre-emergent window opens	Mar 21
55°F	Crabgrass can germinate	May 26
60°F	Tomatoes	May 27
65°F	Warm-season grass seed	May 29

Casper, WY, 80 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

82648 47°F · 82630 43°F · 82646 47°F · 82642 45°F · 82604 47°F · 82620 44°F · 82639 47°F · 82442 40°F

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

Questions

What is the soil temperature in ZIP code 82638 today?: About 46°F on average in the top 4 inches (0–10 cm), low 41°F and high 53°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 6.5 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 82638?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 21 and 55°F from May 26.

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).