What is the soil temperature in ZIP code 17201 today?

About 50°F on average in the top 4 inches (0–10 cm), low 46°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 9.1 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 17201?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 14 and 55°F from May 27.

ZIP 17201 · Chambersburg, PA · Nov 11, 2026

Soil temperature for ZIP code 17201

50°Faverage today, 0–4 in deep (modelled)
low 46°F · high 53°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.1 km from the ZIP centre point

On a week ago

6° cooler

56°F on Nov 4

5-day mean

51°F

what the verdicts use

Held 55°F last spring

May 27

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	55.6°F	52.5°F	59.2°F	analysis
Nov 5	61.1°F	59.3°F	63.3°F	analysis
Nov 6	61.5°F	60.4°F	62.0°F	analysis
Nov 7	54.0°F	51.8°F	58.4°F	analysis
Nov 8	50.7°F	49.0°F	52.3°F	analysis
Nov 9	50.8°F	49.4°F	51.6°F	analysis
Nov 10	48.8°F	45.4°F	52.0°F	analysis
Today	49.8°F	46.5°F	52.7°F	analysis
Nov 12	51.3°F	50.8°F	52.3°F	forecast
Nov 13	47.4°F	46.2°F	49.4°F	forecast
Nov 14	41.9°F	39.9°F	43.8°F	forecast
Nov 15	40.6°F	38.4°F	42.8°F	forecast
Nov 16	41.4°F	38.6°F	43.6°F	forecast
Nov 17	40.9°F	37.7°F	43.3°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 7
50°F	Pre-emergent window opens	Apr 14
55°F	Crabgrass can germinate	May 27
60°F	Tomatoes	Jun 6
65°F	Warm-season grass seed	not reached

Chambersburg, PA, 3 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

17202 50°F · 17254 50°F · 17246 50°F · 17235 50°F · 17265 50°F · 17244 50°F · 17232 50°F · 17252 50°F

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

Questions

What is the soil temperature in ZIP code 17201 today?: About 50°F on average in the top 4 inches (0–10 cm), low 46°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 9.1 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 17201?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 14 and 55°F from May 27.

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).