Charleston, NY has a temperate climate throughout most of the year with mild winters and warm summers. The average annual temperature is 51 degrees Fahrenheit (10 degrees Celsius). Spring and fall are typically mild, although occasional showers may occur in the springtime. Winters are usually cool but can have cold spells with temperatures dropping below freezing on occasion. Summers tend to be hot and humid, with temperatures frequently reaching above 90°F (32°C). Precipitation is fairly evenly distributed throughout the year, averaging around 45 inches (114 cm) annually.
Charleston, New York gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Charleston averages 68 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 180 sunny days per year in Charleston. The US average is 205 sunny days.
Charleston gets some kind of precipitation, on average, 141 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 80 degrees
Winter Low: the January low is 11
Rain: averages 43 inches of rain a year
Snow: averages 68 inches of snow a year