What is the soil temperature in ZIP code 59917 today?

About 43°F on average in the top 4 inches (0–10 cm), low 42°F and high 46°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 11.6 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 59917?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 15 and 55°F from Jun 17.

ZIP 59917 · Montana · Nov 11, 2026

Soil temperature for ZIP code 59917

43°Faverage today, 0–4 in deep (modelled)
low 42°F · high 46°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 11.6 km from the ZIP centre point

On a week ago

9° warmer

34°F on Nov 4

5-day mean

40°F

what the verdicts use

Held 55°F last spring

Jun 17

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	34.5°F	34.1°F	34.9°F	analysis
Nov 5	34.4°F	33.9°F	35.2°F	analysis
Nov 6	34.8°F	34.3°F	35.9°F	analysis
Nov 7	38.9°F	36.2°F	43.1°F	analysis
Nov 8	41.5°F	40.4°F	42.6°F	analysis
Nov 9	37.6°F	36.2°F	39.2°F	analysis
Nov 10	39.2°F	38.1°F	41.3°F	analysis
Today	43.2°F	42.0°F	46.1°F	analysis
Nov 12	43.4°F	41.8°F	46.0°F	forecast
Nov 13	41.9°F	40.2°F	43.6°F	forecast
Nov 14	39.3°F	37.5°F	41.2°F	forecast
Nov 15	38.6°F	37.0°F	40.5°F	forecast
Nov 16	40.3°F	40.0°F	40.7°F	forecast
Nov 17	36.4°F	35.8°F	37.5°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	May 3
50°F	Pre-emergent window opens	Jun 15
55°F	Crabgrass can germinate	Jun 17
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

Nearby ZIP codes

Today's modelled average.

59918 40°F · 59930 42°F · 59933 40°F · 59934 44°F · 59927 42°F · 59928 42°F · 59937 42°F · 59912 42°F

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

Questions

What is the soil temperature in ZIP code 59917 today?: About 43°F on average in the top 4 inches (0–10 cm), low 42°F and high 46°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 11.6 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 59917?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 15 and 55°F from Jun 17.

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).