What is the soil temperature in ZIP code 04221 today?

About 44°F on average in the top 4 inches (0–10 cm), low 43°F and high 44°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 3.7 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 04221?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 19 and 55°F from Jun 6.

ZIP 04221 · Turner, ME · Nov 11, 2026

Soil temperature for ZIP code 04221

44°Faverage today, 0–4 in deep (modelled)
low 43°F · high 44°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 3.7 km from the ZIP centre point

On a week ago

8° cooler

52°F on Nov 4

5-day mean

46°F

what the verdicts use

Held 55°F last spring

Jun 6

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	51.7°F	49.2°F	54.9°F	analysis
Nov 5	54.4°F	51.9°F	57.1°F	analysis
Nov 6	57.9°F	57.0°F	58.8°F	analysis
Nov 7	52.7°F	49.3°F	56.2°F	analysis
Nov 8	45.6°F	43.1°F	48.2°F	analysis
Nov 9	42.1°F	40.9°F	43.7°F	analysis
Nov 10	43.5°F	42.6°F	44.4°F	analysis
Today	43.7°F	42.9°F	44.3°F	analysis
Nov 12	39.9°F	39.1°F	40.3°F	forecast
Nov 13	38.0°F	37.7°F	39.0°F	forecast
Nov 14	37.1°F	36.6°F	37.4°F	forecast
Nov 15	36.7°F	36.4°F	37.0°F	forecast
Nov 16	36.7°F	36.5°F	37.1°F	forecast
Nov 17	36.9°F	36.3°F	37.2°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	Apr 27
50°F	Pre-emergent window opens	May 19
55°F	Crabgrass can germinate	Jun 6
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

Lewiston, ME, 44 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

04239 44°F · 04227 44°F · 04253 44°F · 04224 43°F · 04290 43°F · 04254 44°F · 04234 44°F · 04294 42°F

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

Questions

What is the soil temperature in ZIP code 04221 today?: About 44°F on average in the top 4 inches (0–10 cm), low 43°F and high 44°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 3.7 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 04221?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 19 and 55°F from Jun 6.

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).