What is the soil temperature in ZIP code 03465 today?

About 46°F on average in the top 4 inches (0–10 cm), low 44°F and high 47°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 10.1 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 03465?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 18 and 55°F from Jun 6.

ZIP 03465 · Swanzey, NH · Nov 11, 2026

Soil temperature for ZIP code 03465

46°Faverage today, 0–4 in deep (modelled)
low 44°F · high 47°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 10.1 km from the ZIP centre point

On a week ago

8° cooler

54°F on Nov 4

5-day mean

48°F

what the verdicts use

Held 55°F last spring

Jun 6

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	54.0°F	51.0°F	57.4°F	analysis
Nov 5	56.3°F	54.4°F	58.3°F	analysis
Nov 6	58.9°F	58.6°F	59.3°F	analysis
Nov 7	56.2°F	54.4°F	58.2°F	analysis
Nov 8	49.1°F	47.5°F	51.8°F	analysis
Nov 9	45.1°F	44.2°F	45.6°F	analysis
Nov 10	45.1°F	43.5°F	46.4°F	analysis
Today	46.1°F	44.5°F	46.8°F	analysis
Nov 12	43.1°F	42.3°F	44.5°F	forecast
Nov 13	40.3°F	39.4°F	41.7°F	forecast
Nov 14	37.9°F	37.5°F	38.6°F	forecast
Nov 15	37.5°F	37.2°F	37.7°F	forecast
Nov 16	36.8°F	36.6°F	37.0°F	forecast
Nov 17	36.5°F	36.2°F	36.6°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	Apr 13
50°F	Pre-emergent window opens	May 18
55°F	Crabgrass can germinate	Jun 6
60°F	Tomatoes	Jun 7
65°F	Warm-season grass seed	not reached

Keene, NH, 14 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

03455 46°F · 03447 46°F · 03446 46°F · 03452 46°F · 03444 46°F · 03470 46°F · 03461 46°F · 03450 46°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 03465 today?: About 46°F on average in the top 4 inches (0–10 cm), low 44°F and high 47°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 10.1 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 03465?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 18 and 55°F from Jun 6.

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).