Castleton, Vermont Weather by Month

By | July 3, 2024

Castleton, Vermont, is a charming town located in Rutland County in the southwestern part of the state. It lies within the United States and is part of the New England region, known for its picturesque landscapes, rich history, and vibrant seasons. Castleton is nestled in the Green Mountains, providing a stunning backdrop of rolling hills, forests, and waterways.

Geographically, Castleton is characterized by its beautiful natural surroundings, including Lake Bomoseen, the largest lake within Vermont’s borders, which offers a variety of recreational activities. The town covers an area of approximately 42.5 square miles, with a mix of residential areas, farmlands, and natural parks.

As of the latest census, Castleton has a population of around 4,500 residents. The town is known for its close-knit community and small-town charm, making it a welcoming place for families, students, and visitors alike.

One of the most notable institutions in Castleton is Castleton University, a public liberal arts university that serves as a major educational and cultural hub for the region. The university offers a wide range of academic programs and hosts various cultural and sporting events, contributing significantly to the town’s vibrancy and economy.

Major landmarks in Castleton include the historic Castleton Federated Church, the Castleton Four Corners Historic District, and the Hubbardton Battlefield, a site of historical significance from the American Revolutionary War. Additionally, the scenic beauty of Lake Bomoseen and the surrounding Green Mountains make Castleton a popular destination for outdoor enthusiasts.

Climate and Weather Overview

Castleton, Vermont, experiences a humid continental climate, characterized by four distinct seasons with cold, snowy winters and warm, humid summers. The town’s weather is influenced by its location in the Green Mountains and its proximity to Lake Bomoseen, leading to moderate temperatures and significant precipitation throughout the year.

Table of Average Monthly Weather Data

Month Average High (°F) Average Low (°F) Average Precipitation (inches) Average Sunny Days
January 29 10 2.5 10
February 32 13 2.1 10
March 42 23 2.7 12
April 56 35 3.1 12
May 68 46 3.5 14
June 77 56 3.7 15
July 81 60 3.8 15
August 79 58 3.7 14
September 71 50 3.5 12
October 59 39 3.5 11
November 46 30 3.4 9
December 33 17 2.9 8

Weather by Month


January in Castleton is typically the coldest month of the year, with average high temperatures around 29°F and lows dropping to 10°F. Snowfall is common, and the town often experiences several snowstorms throughout the month. The cold temperatures and frequent snow make January ideal for winter activities such as skiing, snowboarding, and ice fishing on Lake Bomoseen. Residents often gather for local winter festivals and events, and the town’s parks and outdoor areas become winter wonderlands.


February remains cold, with average high temperatures of 32°F and lows of 13°F. Snow continues to fall, though not as heavily as in January. The town often sees a few more sunny days in February, which can help break up the winter gloom. Winter sports remain popular, and the community often participates in winter-themed events and activities. Indoor activities such as visiting local museums or attending theater performances at Castleton University are also popular during this month.


March marks the beginning of the transition from winter to spring. Average high temperatures rise to 42°F, and lows increase to 23°F. Precipitation levels rise to about 2.7 inches, mainly in the form of rain and snow. The increasing daylight and warming temperatures make it a good time for early spring activities like hiking and birdwatching. Local parks and trails start to see more visitors as the snow begins to melt. Residents begin to prepare for the upcoming planting season, and gardening activities slowly start to resume.


April brings more significant signs of spring, with average high temperatures reaching 56°F and lows around 35°F. Rainfall increases to 3.1 inches, and the number of sunny days also rises. This is a month of rapid change in the landscape, with budding trees and blooming flowers. Gardening and outdoor projects become popular activities, and local farmers begin preparing their fields for planting. The scenery around Lake Bomoseen and the Green Mountains becomes vibrant with activity, as residents take advantage of the improving weather.


May sees a substantial warming trend, with average high temperatures of 68°F and lows of 46°F. Rainfall remains relatively high at 3.5 inches, promoting lush growth. The pleasant weather makes it ideal for outdoor activities such as picnicking, biking, and attending local festivals and events. Farmers markets begin to open, offering fresh, locally grown produce. The town hosts various outdoor concerts and community gatherings, making it a vibrant month for social activities.


June is the start of summer, with average high temperatures reaching 77°F and lows around 56°F. Precipitation levels are at 3.7 inches, and the number of sunny days increases. This is a popular month for outdoor activities like swimming, boating, and fishing on Lake Bomoseen. Community events, such as outdoor concerts and fairs, provide ample opportunities to enjoy the warm weather. The town’s parks are bustling with activity, and local trails are popular for hiking and biking.


July is the warmest month in Castleton, with average high temperatures of 81°F and lows of 60°F. Rainfall is at 3.8 inches, often due to afternoon thunderstorms. The warm and humid conditions are perfect for summer sports, barbecues, and spending time at local lakes and rivers. Independence Day celebrations are a highlight, with fireworks and parades bringing the community together. Outdoor activities such as hiking, biking, and visiting local attractions are popular as residents and visitors enjoy the height of summer.


August remains warm, with average high temperatures of 79°F and lows of 58°F. Rainfall is slightly lower at 3.7 inches, typically from thunderstorms. The consistent warmth and long days make it a perfect time for outdoor activities like hiking, camping, and enjoying local parks. As the end of summer approaches, many families take vacations and participate in back-to-school events. The town’s parks and recreational areas remain busy, and local farmers markets continue to thrive.


September sees the beginning of fall, with average high temperatures dropping to 71°F and lows to 50°F. Rainfall is at 3.5 inches, and the number of sunny days decreases slightly. The cooler temperatures and changing foliage make it an excellent time for outdoor activities such as apple picking, visiting pumpkin patches, and enjoying fall festivals. Hiking and biking trails are popular as the landscape transforms with vibrant autumn colors. The Castleton Fall Festival is a highlight of the month.


October brings cooler temperatures, with average highs of 59°F and lows of 39°F. Rainfall increases to 3.5 inches. The fall foliage reaches its peak, providing stunning scenery for outdoor activities. Halloween events, corn mazes, and hayrides are popular pastimes. The crisp weather is perfect for hiking and enjoying the natural beauty of the region. Local farms and orchards host seasonal events, drawing both residents and visitors.


November marks the transition to winter, with average high temperatures of 46°F and lows of 30°F. Rainfall remains at 3.4 inches, and the number of sunny days decreases. The weather becomes more unpredictable, with a mix of rain and the first snowfall of the season. Residents begin preparing for winter, with activities shifting to indoor hobbies and holiday preparations. The town’s holiday season kicks off with various events and markets, creating a festive atmosphere.


December brings cold temperatures, with average highs of 33°F and lows of 17°F. Snowfall increases, and the town often experiences several significant snow events. Holiday celebrations and events dominate the month, with residents participating in tree lighting ceremonies, holiday markets, and festive gatherings. Winter sports and indoor activities become the focus as the community settles in for the winter season. The local museums and Castleton University offer warm, indoor experiences for visitors.

Natural Disasters

Castleton, Vermont, can experience various natural disasters. The most common are severe winter storms and occasional flooding, particularly in the spring and fall. Ice storms and nor’easters can bring significant snow and ice accumulation, leading to power outages and hazardous travel conditions. It is important for residents to stay informed and prepared for these events, with local authorities providing guidance and emergency services.

Recommended Activities

Each month in Castleton offers unique opportunities for both indoor and outdoor activities. Winter months are ideal for visiting local museums and cozy indoor hobbies, while spring and fall provide excellent conditions for hiking, gardening, and enjoying the changing seasons. Summer is perfect for water activities, community events, and outdoor recreation. No matter the time of year, Castleton’s residents and visitors can find ways to connect with nature and each other, enjoying the rich seasonal diversity that the town offers.

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