What is the soil temperature in ZIP code 05902 today?

About 39°F on average in the top 4 inches (0–10 cm), low 38°F and high 40°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 1.4 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 05902?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 5 and 55°F from Jun 8.

ZIP 05902 · New Hampshire · Nov 11, 2026

Soil temperature for ZIP code 05902

39°Faverage today, 0–4 in deep (modelled)
low 38°F · high 40°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 1.4 km from the ZIP centre point

On a week ago

11° cooler

50°F on Nov 4

5-day mean

42°F

what the verdicts use

Held 55°F last spring

Jun 8

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	49.8°F	46.7°F	53.2°F	analysis
Nov 5	52.1°F	50.7°F	53.9°F	analysis
Nov 6	52.4°F	51.4°F	54.1°F	analysis
Nov 7	48.7°F	48.2°F	49.2°F	analysis
Nov 8	42.2°F	39.8°F	45.4°F	analysis
Nov 9	39.4°F	38.8°F	40.0°F	analysis
Nov 10	39.0°F	38.2°F	40.0°F	analysis
Today	38.7°F	37.8°F	40.2°F	analysis
Nov 12	36.6°F	36.4°F	37.0°F	forecast
Nov 13	36.0°F	35.9°F	36.2°F	forecast
Nov 14	34.9°F	34.7°F	35.2°F	forecast
Nov 15	34.5°F	34.4°F	34.7°F	forecast
Nov 16	34.6°F	34.5°F	34.7°F	forecast
Nov 17	34.1°F	33.8°F	34.5°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 6
50°F	Pre-emergent window opens	Jun 5
55°F	Crabgrass can germinate	Jun 8
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

Nearby ZIP codes

Today's modelled average.

05903 39°F · 05901 38°F · 03576 39°F · 03592 38°F · 05907 38°F · 03597 38°F · 03590 38°F · 05846 39°F

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

Questions

What is the soil temperature in ZIP code 05902 today?: About 39°F on average in the top 4 inches (0–10 cm), low 38°F and high 40°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 1.4 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 05902?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from Jun 5 and 55°F from Jun 8.

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).