What is the soil temperature in ZIP code 85639 today?

About 68°F on average in the top 4 inches (0–10 cm), low 62°F and high 77°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 6.8 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 85639?

Soil here stayed above 50°F all last winter, so the 50 to 55°F soil rule gives no spring window. Time pre-emergent to your local calendar.

ZIP 85639 · Arizona · Nov 11, 2026

Soil temperature for ZIP code 85639

68°Faverage today, 0–4 in deep (modelled)
low 62°F · high 77°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 6.8 km from the ZIP centre point

On a week ago

3° warmer

66°F on Nov 4

5-day mean

67°F

what the verdicts use

Held 55°F last spring

Jan 16

crabgrass germination temperature

What the soil says today

Pre-emergentSeason over
Cool-season seedToo late in the season
Warm-season seedWarm enough
TomatoesSoil warm enough
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	65.5°F	59.8°F	72.6°F	analysis
Nov 5	65.0°F	59.1°F	72.6°F	analysis
Nov 6	66.2°F	60.8°F	73.5°F	analysis
Nov 7	65.7°F	60.2°F	72.9°F	analysis
Nov 8	66.3°F	60.9°F	73.7°F	analysis
Nov 9	67.1°F	61.1°F	75.5°F	analysis
Nov 10	68.1°F	61.8°F	76.3°F	analysis
Today	68.1°F	61.6°F	76.8°F	analysis
Nov 12	68.5°F	62.5°F	76.0°F	forecast
Nov 13	65.8°F	63.1°F	68.1°F	forecast
Nov 14	62.2°F	58.4°F	66.4°F	forecast
Nov 15	63.9°F	58.4°F	71.5°F	forecast
Nov 16	65.0°F	59.7°F	71.7°F	forecast
Nov 17	65.3°F	60.9°F	70.9°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	never below
50°F	Pre-emergent window opens	never below
55°F	Crabgrass can germinate	Jan 16
60°F	Tomatoes	Feb 2
65°F	Warm-season grass seed	Feb 25

Sahuarita, AZ, 72 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

85633 65°F · 85736 65°F · 85601 63°F · 85634 70°F · 85735 66°F · 85645 65°F · 85622 66°F · 85629 66°F

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

Questions

What is the soil temperature in ZIP code 85639 today?: About 68°F on average in the top 4 inches (0–10 cm), low 62°F and high 77°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 6.8 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 85639?: Soil here stayed above 50°F all last winter, so the 50 to 55°F soil rule gives no spring window. Time pre-emergent to your local calendar.

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).