Fall/Winter 2018-2019 Business Travel Guide

The Forecast for Your Stay

Vermont plant-hardiness zone map 2012

The USDA Plant Hardiness Zone Map is based on the average minimum winter temperature, divided into 10º F zones. Click the image for a larger version. The map was updated in 2012.

Stretching for 110 miles along Vermont’s western border, Lake Champlain moderates the area’s temperatures by 5 to 10 degrees compared to the rest of the state. The St. Lawrence Valley storm track helps Vermont rank in the top four states with the least amount of sunshine. Burlington’s growing season averages 153 days — USDA zone 5a. Median date of the last frost is May 7, first frost around Oct. 6. Annual average rainfall is 36.82 inches.

Spring’s warm days and cool nights start the sap running in the sugar maples. It also brings “mud season” to the back roads as the frost loosens its grip. 

Summers, while not long, are exceptionally pleasant, with an average of only six 90-degree or higher days per year. Average relative humidity is 78 percent.

Fall brings spectacular foliage, with peak colors beginning in the northern regions mid September, gradually moving through the rest of the state by mid October.

Expect snow by the end of November; the last snowfall in mid April. Burlington’s 81.2-inch average annual snowfall typically comes in 2- to 5-inch doses.

The National Weather Service at Burlington International Airport has updated weather reports: (802) 862-2475, www.erh.noaa.gov/btv. •

Monthly average temperatures – Burlington

The Vermont Road Atlas, Rand McNally Places Rated Almanac, and The Greater Burlington Industrial Corp.)
Source: National Oceanic and Atmospheric Administration.