ZIP 28657 · Boone, NC · Nov 11, 2026

Soil temperature for ZIP code 28657

50°Faverage today, 0–4 in deep (modelled)
low 47°F · high 52°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 5.7 km from the ZIP centre point

On a week ago
4° cooler
54°F on Nov 4
5-day mean
49°F
what the verdicts use
Held 55°F last spring
May 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 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.

30°40°50°60°70°50–55°F windowNov 4Nov 6Nov 8TodayNov 14Nov 1654°50°37°
View as table
DayAverageLowHigh
Nov 454.2°F53.5°F54.7°Fanalysis
Nov 557.2°F55.9°F58.8°Fanalysis
Nov 656.7°F55.5°F58.4°Fanalysis
Nov 751.1°F49.9°F53.7°Fanalysis
Nov 847.5°F44.3°F49.8°Fanalysis
Nov 947.5°F44.7°F49.9°Fanalysis
Nov 1049.4°F46.0°F52.6°Fanalysis
Today49.9°F46.8°F52.4°Fanalysis
Nov 1248.4°F45.8°F50.3°Fforecast
Nov 1340.3°F38.8°F42.9°Fforecast
Nov 1438.0°F37.4°F38.6°Fforecast
Nov 1536.8°F36.5°F37.2°Fforecast
Nov 1636.2°F36.1°F36.6°Fforecast
Nov 1736.7°F36.2°F38.0°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 lettuceMar 1
50°FPre-emergent window opensApr 12
55°FCrabgrass can germinateMay 18
60°FTomatoesJun 7
65°FWarm-season grass seednot reached

Boone, NC, 32 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

28616 50°F · 28662 50°F · 28664 50°F · 28653 50°F · 28641 50°F · 28652 50°F · 28646 54°F · 28777 50°F

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

Questions

What is the soil temperature in ZIP code 28657 today?
About 50°F on average in the top 4 inches (0–10 cm), low 47°F and high 52°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 5.7 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 28657?
The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Apr 12 and 55°F from May 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).