What is the soil temperature in ZIP code 61771 today?

About 52°F on average in the top 4 inches (0–10 cm), low 49°F and high 55°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 9.5 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 61771?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 10 and 55°F from May 12.

ZIP 61771 · Eureka, IL · Nov 11, 2026

Soil temperature for ZIP code 61771

52°Faverage today, 0–4 in deep (modelled)
low 49°F · high 55°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.5 km from the ZIP centre point

On a week ago

8° cooler

61°F on Nov 4

5-day mean

49°F

what the verdicts use

Held 55°F last spring

May 12

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	60.8°F	57.5°F	63.8°F	analysis
Nov 5	53.4°F	52.1°F	55.3°F	analysis
Nov 6	50.3°F	49.4°F	52.3°F	analysis
Nov 7	44.8°F	40.9°F	48.2°F	analysis
Nov 8	46.4°F	41.6°F	52.1°F	analysis
Nov 9	49.5°F	44.9°F	54.2°F	analysis
Nov 10	53.4°F	49.9°F	57.0°F	analysis
Today	52.4°F	49.4°F	54.8°F	analysis
Nov 12	46.9°F	45.6°F	48.9°F	forecast
Nov 13	40.0°F	37.2°F	41.8°F	forecast
Nov 14	38.7°F	34.8°F	42.3°F	forecast
Nov 15	40.1°F	35.5°F	44.8°F	forecast
Nov 16	41.9°F	37.3°F	46.2°F	forecast
Nov 17	42.3°F	37.9°F	46.0°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 6
50°F	Pre-emergent window opens	Apr 10
55°F	Crabgrass can germinate	May 12
60°F	Tomatoes	May 17
65°F	Warm-season grass seed	May 27

Bloomington, IL, 29 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

61530 52°F · 61738 53°F · 61725 53°F · 61729 52°F · 61561 52°F · 61742 52°F · 61516 52°F · 61748 53°F

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

Questions

What is the soil temperature in ZIP code 61771 today?: About 52°F on average in the top 4 inches (0–10 cm), low 49°F and high 55°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 9.5 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 61771?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 10 and 55°F from May 12.

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).