What is the soil temperature in ZIP code 84643 today?

About 45°F on average in the top 4 inches (0–10 cm), low 40°F and high 52°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 14.6 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 84643?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 19 and 55°F from Mar 21.

ZIP 84643 · Ephraim, UT · Nov 11, 2026

Soil temperature for ZIP code 84643

45°Faverage today, 0–4 in deep (modelled)
low 40°F · high 52°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 14.6 km from the ZIP centre point

On a week ago

2° warmer

43°F on Nov 4

5-day mean

45°F

what the verdicts use

Held 55°F last spring

Mar 21

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	42.6°F	40.2°F	44.5°F	analysis
Nov 5	44.0°F	41.5°F	48.8°F	analysis
Nov 6	44.3°F	39.7°F	50.1°F	analysis
Nov 7	43.6°F	39.3°F	50.3°F	analysis
Nov 8	44.6°F	39.1°F	52.4°F	analysis
Nov 9	46.1°F	40.6°F	53.8°F	analysis
Nov 10	46.1°F	41.5°F	52.4°F	analysis
Today	44.8°F	39.5°F	52.0°F	analysis
Nov 12	44.8°F	39.5°F	51.8°F	forecast
Nov 13	44.8°F	40.4°F	50.1°F	forecast
Nov 14	43.6°F	42.0°F	46.5°F	forecast
Nov 15	39.6°F	36.9°F	43.6°F	forecast
Nov 16	41.4°F	37.0°F	48.7°F	forecast
Nov 17	42.6°F	38.1°F	49.6°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 6
50°F	Pre-emergent window opens	Mar 19
55°F	Crabgrass can germinate	Mar 21
60°F	Tomatoes	Jun 2
65°F	Warm-season grass seed	Jun 5

Nearby ZIP codes

Today's modelled average.

84665 39°F · 84622 46°F · 84634 45°F · 84621 46°F · 84642 39°F · 84652 44°F · 84630 45°F · 84627 39°F

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

Questions

What is the soil temperature in ZIP code 84643 today?: About 45°F on average in the top 4 inches (0–10 cm), low 40°F and high 52°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 14.6 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 84643?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Mar 19 and 55°F from Mar 21.

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).