Vermont, USA · The Green Mountain State
weather across vermont — the state where the green mountains meet lake champlain.
Vermont is the only New England state with no Atlantic coastline, but the geography compensates with the Green Mountains running the entire length of the state and Lake Champlain along the western border. The combination produces a true mountain continental climate with brutal winters, brief beautiful summers, and the most photographed fall foliage corridor in the eastern United States. Vermont is the foliage state, the maple syrup state, and the small-town New England state — all derived from the climate.
What is the weather like in Vermont?
Vermont has a humid continental mountain climate with brutal winters and brief beautiful summers. The Green Mountains run the entire length of the state and produce orographic enhancement of winter snow events, with annual totals over 100 inches in the highest elevations supporting Stowe, Killington, and Sugarbush ski resorts. Lake Champlain along the western border produces local thermal moderation. Peak fall foliage in late September and early October draws international tourism.
The seasons, honestly
seasons in vermont.
Vermont seasons follow the New England continental mountain pattern with sharp transitions and dramatic seasonal variation. Winter (November–April) is the longest and most defining season — the Green Mountains receive 100–300+ inches of annual snowfall depending on elevation, supporting one of the largest ski industries in the eastern US. The Burlington area along Lake Champlain experiences slightly milder conditions thanks to the lake’s thermal flywheel effect, while the inland mountain valleys experience some of the coldest sustained winter temperatures in southern New England.
Spring (April–May) is short, dramatic, and emotionally important. The maple sugaring season runs from late February through early April, with sap flowing on warm sunny days followed by freezing nights. The "ice-out" date for the lakes and ponds is a regional event tracked across the state. Summer (June–August) is brief and warm, with average July highs in the mid 70s°F. The lakes thaw, the trout streams run, and the entire state activates its outdoor culture.
Fall (September–October) is the meteorological event Vermont is most famous for. Peak foliage runs from late September at the highest elevations of Mt. Mansfield and the northern Green Mountains through mid October across the central and southern valleys. The combination of dense maple-beech-birch forest, the Green Mountain terrain, and the typical clear cool fall pattern produces what many consider the best fall foliage destination in the world. Peak weeks in early October bring international tourism that defines the state’s economy.
Defining weather events
what the sky does in vermont.
Vermont weather is defined by two large-scale mechanisms. The Green Mountains run the entire length of the state from Massachusetts to Quebec, producing the orographic lift that captures winter Pacific moisture and dumps it as snow on the windward slopes. Mt. Mansfield at 4,393 feet is the highest peak in Vermont and receives over 240 inches of annual snowfall. The Green Mountain National Forest, the Long Trail, and the Vermont ski industry all derive from this orographic effect.
Lake Champlain produces secondary modulation along the western border. The lake is the sixth-largest in the US by surface area and produces a local thermal flywheel effect for the Burlington area — cooler summers, slightly milder winters along the immediate shoreline, and the dramatic spring lag that keeps the lake cold well into May. Lake-effect snow events can occur when winds align from the northwest across the open water.
The state’s position in the Champlain Valley between the Green Mountains and the Adirondacks produces a distinctive microclimate that’s slightly milder than the inland mountain valleys but significantly more continental than coastal New England.
The Green Mountains receive 100–300+ inches of annual snowfall depending on elevation. Stowe, Killington, Sugarbush, Jay Peak, and Mad River Glen are all major ski destinations. Mt. Mansfield at 4,393 feet receives over 240 inches per year.
Continental polar air masses descend from Quebec and produce sub-zero stretches across the state. The inland mountain valleys see -30°F to -40°F during major events. Wind chills below -50°F are common during the worst stretches.
Peak foliage in Vermont runs from late September at the highest elevations through mid October across the central and southern valleys. Vermont fall foliage is among the most photographed in the world, and the weeks of late September through mid October are the state’s peak tourism season.
Lake Champlain’s thermal flywheel produces local moderation along the western border. Burlington runs cooler in summer and milder in winter than the inland mountain valleys. The lake stays cold well into June, producing dramatic spring lag.
Snowmelt floods are a regular spring event across Vermont. The 2011 Tropical Storm Irene flooding produced devastating damage across the entire state. The 2023 Montpelier flood inundated the state capital. The narrow Vermont valley topography amplifies flood risk.
Best cities, by season
where to be in vermont.
Vermont’s best season is summer for the lake and fall for the mountains. The two are equally photogenic; the choice depends on whether you came for the warmth or the foliage.
What other weather apps get wrong
why vermont needs a different forecast.
Generic weather apps treat Vermont as one cold New England state. They show "snowy winter" for Burlington and Montpelier as if both are the same forecast when Burlington’s Lake Champlain moderation produces winters consistently 3–5°F milder than inland Montpelier.
They miss that the Green Mountain ski industry depends on the orographic lift that produces 200+ inches of annual snowfall at the resorts, that Vermont fall foliage is one of the most internationally recognized weather events in the world, and that the 2011 Tropical Storm Irene and the 2023 Montpelier flood are reminders of the state’s flood vulnerability. Apple Weather treats Stowe and Brattleboro as the same forecast despite very different elevation and geographic position.
The Vesper Brief reads Vermont as the mountain state it actually is and writes the Green Mountain orographic snow regime, the peak foliage cycle, and the Lake Champlain modulation as the meteorological events they actually are.
Unlike Apple Weather, Vesper writes for the part of Vermont you actually stand in.
Frequently asked
about vermont weather.
Frequently Asked Questions
When is peak fall foliage in Vermont?
Peak foliage in Vermont runs from late September at the highest elevations of the Green Mountains (Mt. Mansfield, Camel’s Hump, Killington Peak) through early to mid October across the central valleys and the Champlain Valley. Vermont fall foliage is among the most photographed in the world, and the weeks of late September through mid October are the state’s peak tourism season. The Stowe area, the Mad River Valley, and the Northeast Kingdom typically peak in the first week of October.
How much snow do the Vermont ski resorts get?
Vermont ski resorts average 200–350 inches of annual snowfall depending on elevation and aspect. Jay Peak in the far north averages 359 inches per year, the most of any northeastern ski resort. Stowe averages 333 inches; Mad River Glen averages 240; Killington averages 250. The combination of the Green Mountain orographic lift and the inland continental position produces some of the most reliable powder snow in the eastern US.
How does Lake Champlain affect Vermont weather?
Lake Champlain is the sixth-largest US lake by surface area, running 120 miles north-south along the New York-Vermont border. The lake’s thermal mass produces local moderation along the Burlington waterfront — cooler summers, slightly warmer winters along the immediate shoreline, and dramatic spring lag that keeps the lake cold well into May. Lake-effect snow events can occur when winds align from the northwest across the open water.
What was Tropical Storm Irene’s impact on Vermont?
Tropical Storm Irene in August 2011 produced one of the most devastating flood events in modern Vermont history. The storm dropped 8+ inches of rain over 24 hours across the Green Mountains, producing catastrophic flash flooding that destroyed bridges, washed out roads, and killed 6 people across the state. The narrow Vermont valley topography amplified the runoff, and the recovery took years. The event remains a defining moment for Vermont flood awareness.
Why is Vermont known as the maple syrup state?
Vermont produces more maple syrup than any other US state, accounting for over 50% of total US production. The maple sugaring season runs from late February through early April, when warm sunny days produce sap flow and freezing overnight temperatures restore pressure in the trees. The combination of the Vermont continental winter, the dense sugar maple forest, and the elevation variation produces ideal conditions for the sugaring season that defines Vermont’s rural culture and economy.
Get Vesper