What is the soil temperature in ZIP code 16839 today?

About 46°F on average in the top 4 inches (0–10 cm), low 43°F and high 48°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 8.9 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 16839?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 17 and 55°F from May 28.

ZIP 16839 · Shiloh, PA · Nov 11, 2026

Soil temperature for ZIP code 16839

46°Faverage today, 0–4 in deep (modelled)
low 43°F · high 48°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 8.9 km from the ZIP centre point

On a week ago

8° cooler

54°F on Nov 4

5-day mean

46°F

what the verdicts use

Held 55°F last spring

May 28

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	54.0°F	51.2°F	57.0°F	analysis
Nov 5	58.6°F	57.2°F	60.2°F	analysis
Nov 6	55.2°F	53.9°F	56.8°F	analysis
Nov 7	46.5°F	44.3°F	50.8°F	analysis
Nov 8	45.4°F	44.2°F	47.2°F	analysis
Nov 9	47.0°F	45.9°F	47.8°F	analysis
Nov 10	45.9°F	42.8°F	48.8°F	analysis
Today	46.0°F	43.1°F	48.5°F	analysis
Nov 12	46.5°F	45.6°F	47.6°F	forecast
Nov 13	41.4°F	39.7°F	44.0°F	forecast
Nov 14	37.8°F	37.5°F	38.1°F	forecast
Nov 15	36.5°F	36.1°F	37.0°F	forecast
Nov 16	38.1°F	36.8°F	39.5°F	forecast
Nov 17	37.9°F	37.4°F	38.8°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 23
50°F	Pre-emergent window opens	May 17
55°F	Crabgrass can germinate	May 28
60°F	Tomatoes	Jun 7
65°F	Warm-season grass seed	not reached

State College, PA, 31 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

16849 46°F · 16847 46°F · 16879 46°F · 16834 46°F · 16859 46°F · 16858 46°F · 16821 46°F · 16860 46°F

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

Questions

What is the soil temperature in ZIP code 16839 today?: About 46°F on average in the top 4 inches (0–10 cm), low 43°F and high 48°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 8.9 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 16839?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 17 and 55°F from May 28.

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).