ZIP 59873 · Montana · Nov 11, 2026

Soil temperature for ZIP code 59873

42°Faverage today, 0–4 in deep (modelled)
low 41°F · high 44°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 9.9 km from the ZIP centre point

On a week ago
6° warmer
36°F on Nov 4
5-day mean
39°F
what the verdicts use
Held 55°F last spring
Jun 18
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 lettuceToo cold

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.

30°40°50°60°50–55°F windowNov 4Nov 6Nov 8TodayNov 14Nov 1636°42°36°
View as table
DayAverageLowHigh
Nov 436.2°F35.4°F38.3°Fanalysis
Nov 535.7°F34.9°F36.6°Fanalysis
Nov 634.5°F34.1°F34.8°Fanalysis
Nov 738.1°F35.7°F42.8°Fanalysis
Nov 840.5°F40.0°F41.1°Fanalysis
Nov 936.8°F36.1°F38.1°Fanalysis
Nov 1038.1°F36.6°F40.0°Fanalysis
Today41.7°F40.6°F44.5°Fanalysis
Nov 1242.3°F40.9°F44.6°Fforecast
Nov 1341.6°F40.4°F43.4°Fforecast
Nov 1439.6°F38.8°F40.8°Fforecast
Nov 1536.7°F35.2°F39.0°Fforecast
Nov 1638.8°F38.5°F38.9°Fforecast
Nov 1736.0°F35.3°F36.6°Fforecast
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.

SoilWhat it meansHeld from (spring 2026)
40°FPeas and lettuceMay 2
50°FPre-emergent window opensJun 16
55°FCrabgrass can germinateJun 18
60°FTomatoesnot reached
65°FWarm-season grass seednot reached

This ZIP code area covers about 769 square miles; the reading is for the model grid cell nearest its Census centre point, which can be far from where you are. Try a neighbouring ZIP if it looks off.

Nearby ZIP codes

Today's modelled average.

59830 43°F · 59874 44°F · 59867 43°F · 59866 45°F · 59842 43°F · 59859 45°F · 83846 43°F · 83874 43°F

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

Questions

What is the soil temperature in ZIP code 59873 today?
About 42°F on average in the top 4 inches (0–10 cm), low 41°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 9.9 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 59873?
The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 16 and 55°F from Jun 18.

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).