What is the soil temperature in ZIP code 18344 today?

About 48°F on average in the top 4 inches (0–10 cm), low 45°F and high 50°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 15.2 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 18344?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 14 and 55°F from May 28.

ZIP 18344 · Arlington Heights, PA · Nov 11, 2026

Soil temperature for ZIP code 18344

48°Faverage today, 0–4 in deep (modelled)
low 45°F · high 50°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 15.2 km from the ZIP centre point

On a week ago

6° cooler

54°F on Nov 4

5-day mean

49°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	54.4°F	51.6°F	57.7°F	analysis
Nov 5	56.9°F	55.5°F	58.9°F	analysis
Nov 6	59.4°F	58.9°F	59.7°F	analysis
Nov 7	54.6°F	52.5°F	56.4°F	analysis
Nov 8	49.8°F	48.8°F	50.7°F	analysis
Nov 9	48.3°F	47.0°F	48.9°F	analysis
Nov 10	46.6°F	43.7°F	49.5°F	analysis
Today	48.1°F	45.4°F	49.9°F	analysis
Nov 12	48.3°F	47.6°F	48.7°F	forecast
Nov 13	44.4°F	41.7°F	47.1°F	forecast
Nov 14	39.7°F	38.6°F	40.1°F	forecast
Nov 15	38.6°F	37.1°F	39.8°F	forecast
Nov 16	40.1°F	37.9°F	41.4°F	forecast
Nov 17	39.3°F	37.7°F	41.0°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 24
50°F	Pre-emergent window opens	May 14
55°F	Crabgrass can germinate	May 28
60°F	Tomatoes	Jun 6
65°F	Warm-season grass seed	not reached

Scranton, PA, 42 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

18370 48°F · 18349 48°F · 18355 48°F · 18342 47°F · 18332 48°F · 18346 45°F · 18326 47°F · 18372 48°F

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

Questions

What is the soil temperature in ZIP code 18344 today?: About 48°F on average in the top 4 inches (0–10 cm), low 45°F and high 50°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 15.2 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 18344?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 14 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).