These maps vary in size depending on the particular county. These maps show topographic features including contours and elevation in meters, highways, roads and other manmade structures, water features, woodland areas, and geographic names. Snow usually falls from late November to late March in the northern part of the state, and from early December to mid-March in the southern and coastal parts of the state. Geological Survey (USGS) produces 1:100,000-scale county maps for each of the 72 counties in Wisconsin. Most of Connecticut has less than 60 days of snow cover. Generally, any locale north or west of Interstate 84 receives the most snow, during a storm, and throughout the season. The average yearly snowfall ranges from about 60 inches (1,500 mm) in the higher elevations of the northern portion of the state to only 20–25 inches (510–640 mm) along the southeast coast of Connecticut (Branford to Groton). The lowest temperature recorded in Connecticut is −32 ☏ (−36 ☌) which has been observed twice: in Falls Village on February 16, 1943, and in Coventry on January 22, 1961. A contour interval is the vertical distance or difference in. The coldest month (January) has average high temperatures ranging from 38 ☏ (3 ☌) in the coastal lowlands to 33 ☏ (1 ☌) in the inland and northern portions on the state. A contour line is a line drawn on a topographic map to indicate ground elevation or depression.
Winters (December through mid-March) are generally cold from south to north in Connecticut.
