What is the soil temperature in ZIP code 84103 today?

About 46°F on average in the top 4 inches (0–10 cm), low 42°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 10.1 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 84103?

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 26.

ZIP 84103 · Salt Lake City, UT · Nov 11, 2026

Soil temperature for ZIP code 84103

46°Faverage today, 0–4 in deep (modelled)
low 42°F · high 52°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 10.1 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	41.8°F	40.4°F	42.8°F	analysis
Nov 5	41.7°F	39.5°F	44.6°F	analysis
Nov 6	43.5°F	40.2°F	47.6°F	analysis
Nov 7	43.3°F	40.2°F	47.7°F	analysis
Nov 8	44.6°F	40.2°F	51.1°F	analysis
Nov 9	46.9°F	42.5°F	52.9°F	analysis
Nov 10	47.5°F	43.8°F	51.7°F	analysis
Today	46.3°F	42.0°F	52.0°F	analysis
Nov 12	47.1°F	42.7°F	52.4°F	forecast
Nov 13	47.1°F	44.0°F	50.9°F	forecast
Nov 14	43.8°F	41.0°F	46.7°F	forecast
Nov 15	39.7°F	38.6°F	41.3°F	forecast
Nov 16	40.6°F	38.2°F	44.8°F	forecast
Nov 17	42.5°F	39.5°F	47.7°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	Mar 12
50°F	Pre-emergent window opens	Mar 20
55°F	Crabgrass can germinate	May 26
60°F	Tomatoes	Jun 15
65°F	Warm-season grass seed	Jun 19

Salt Lake City, UT, 6 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

84112 46°F · 84114 50°F · 84113 46°F · 84102 46°F · 84150 50°F · 84138 50°F · 84180 50°F · 84111 50°F

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

Questions

What is the soil temperature in ZIP code 84103 today?: About 46°F on average in the top 4 inches (0–10 cm), low 42°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 10.1 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 84103?: 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 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).