Cool-season · fall window
For cool-season lawns (fescue, bluegrass, ryegrass), fall is the best time to plant grass seed in Vermont, with spring the second choice: fall seedlings face less weed competition and mature before summer heat.
Soil Temperature in Vermont
The current average 2-inch soil temperature across Vermont is 61°F. Readings range from 59°F to 62°F, from 2 USDA and NOAA monitoring stations. Soil across Vermont is right at the seasonal normal of 61°F for mid-August, based on 2 of 2 stations with historical records. Vermont spans USDA hardiness zones 4b to 5b, cool-season grass country. Last updated August 16, 2026.
Current Planting Conditions
Soil across Vermont averages 61°F at 2 inches, inside the cool-season band, but summer heat is ahead. Seedlings started now would establish during the hottest weeks of the year, so hold cool-season seeding for the fall window. Warm-season lawns are in their active season.
Best Time to Plant Grass Seed in Vermont
Cool-season · spring window
May 14
Spring is the second choice: the window opens when soil first holds 50°F.
Fall seeding also needs a stop date: new seedlings want about six weeks of growth before frost arrives. Your city page estimates the last safe seeding date from its nearest station: see when to plant in Montpelier, when to plant in Burlington or when to plant in Brattleboro. Readings current through August 16, 2026: Vermont averages 61°F at 2 inches right now; the Current Planting Conditions section above reads that number against the season.
Typical dates are computed from historical 2-inch soil temperature averages at 2 monitoring stations in Vermont; your own window depends on your nearest station's readings.
Average Soil Temperature by Month in Vermont
Historical 2-inch soil temperature normals for Vermont: the median across 2 in-state stations with multi-year records. Any given year runs ahead of or behind these values; the live average at the top of this page shows where this year stands.
| Month | Average 2-inch soil temperature |
|---|---|
| January | 35°F |
| February | 34°F |
| March | 34°F |
| April | 40°F |
| May | 50°F |
| June | 57°F |
| July | 62°F |
| August | 61°F |
| September | 57°F |
| October | 50°F |
| November | 41°F |
| December | 36°F |
Grass Seed Germination in Vermont
Grass seed germination
Grass seed germination temperatures across Vermont. Soil warmth varies by location, so check a city page for the live reading and what germinates there now.
| Grass species | Seeding soil temp (2 in) | Days |
|---|---|---|
| Kentucky bluegrass | 50–65°F | 14-30 |
| Tall fescue | 50–65°F | 7-12 |
| Perennial ryegrass | 50–65°F | 5-10 |
| Fine fescue | 50–65°F | 7-14 |
| Bermudagrass | 75–90°F | 10-30 |
Monitoring Stations in Vermont (2)
For root-zone timing (fertilizer, aeration, weed control), see the 4-inch soil temperature for Vermont. For how wet the ground is versus normal, see soil moisture for Vermont. See the Vermont soil temperature map for the full station view.
Interpolated from the latest 4-inch readings and refreshed daily.
| Station | 2" Temp | Last Reading |
|---|---|---|
| Mount Mansfield (Chittenden) | 62°F | 2026-08-16 |
| Lye Brook (Bennington) | 59°F | 2026-08-16 |
Cities in Vermont (10)
| City | ZIP | Current Temp |
|---|---|---|
| Brattleboro | 05301 | 59°F |
| Burlington | 05401 | 62°F |
| Colchester | 05439 | 62°F |
| Essex Junction | 05452 | 62°F |
| Montpelier | 05601 | 62°F |
| Rutland | 05701 | 59°F |
| Saint Albans | 05478 | 62°F |
| South Burlington | 05403 | 62°F |
| Waterbury | 05671 | 62°F |
| White River Junction | 05001 | 60°F |
Lawn Care Timing Guides for Vermont
- When to Overseed Your Lawn in Fall: The 60-70°F Soil Window
Fall is the best time to overseed a thin lawn.
- When to Aerate Your Lawn by Grass Type and Soil Temperature
Core aeration relieves compaction, but timing decides whether the lawn recovers in a week or struggles for a month.
- Lawn Fungus by Temperature: Brown Patch, Dollar Spot, Rust
Brown patch and Pythium strike when humid nights hold above 68°F on lush, over-fertilized turf; dollar spot, red thread, and rust hit slow-growing lawns at 60-85°F.
- Grass Seed Germination Soil Temperature: What Each Species Needs
Check whether your soil is warm enough for the seed you bought: cool-season grass seeds into 50-65°F soil (tall fescue prefers 60°F and up), warm-season into 75-85°F.
Soil Temperature FAQ for Vermont
What is the current soil temperature in Vermont?
The current average 2-inch soil temperature across Vermont is 61°F. Readings range from 59°F to 62°F depending on location and elevation, from 2 USDA and NOAA monitoring stations. Soil across Vermont is right at the seasonal normal of 61°F for mid-August, based on 2 of 2 stations with historical records.
When should I apply pre-emergent in Vermont?
Apply pre-emergent herbicide when soil at 2 inches reaches 55°F for several consecutive days. Timing varies across Vermont, so check your city's page for station-specific readings and the pre-emergent timing recommendation.
When can I plant grass seed in Vermont?
Vermont spans USDA hardiness zones 4b to 5b, cool-season grass country. Cool-season grasses (fescue, bluegrass) can be seeded when soil holds between 50 and 65°F. Warm-season grasses (bermuda, zoysia) need soil above 65°F. Timing varies by location, so check your city's planting window for the dates specific to your area.