Being in or near the paths of most major weather systems moving eastward across the United States, Towanda is sugjected to a variety of conditions. Changes in temperature, humidity, wind and other weather elements are frequent especially during winter and early spring when such systems are numerous and move most rapidly. Towanda lies in one of the colder regions of Pennsylvania where temperatures average several degrees lower than those in the southeastern part of the state. More representative temperatures, however, are shown on the local climatological data page. Summers are usually the most pleasant time of year.
Sunshine is abundant and days are warm yet most nights are comfortably cool.
In an average summer at least one period of hot and humid conditions will prevail for up to a week or so during which time maximum temperatures reach into the 90s daily. Even during such periods, nights are generally comfortable due to radiationally cooled air, especially on calm clear nights, draining into the valleys. Alternate periods of freezing and thawing are most prevalnet during the spring and fall seasons. However, growing seasons have ranged from only 98 days to as long as 189 days. Sheltered areas and nearby higher elevations tend to have a somewhat shorter season.