Duncan, MS has a humid subtropical climate with hot humid summers and mild winters. The average temperature in the summer months is around 80 degrees Fahrenheit while the winter months usually range from 45 to 55 degrees Fahrenheit. Precipitation is abundant throughout the year with an average annual rainfall of nearly 60 inches. The area experiences frequent thunderstorms during the peak summer months due to its location near the coast and its proximity to the Gulf of Mexico. Humidity levels are relatively high, averaging around 75 percent throughout the year.
Duncan, Mississippi gets 53 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Duncan averages 1 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 211 sunny days per year in Duncan. The US average is 205 sunny days.
Duncan gets some kind of precipitation, on average, 103 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 92 degrees
Winter Low: the January low is 32
Rain: averages 53 inches of rain a year
Snow: averages 1 inches of snow a year