The climate in Jefferson, MS County is generally mild throughout the year. Summers are usually hot and humid with temperatures reaching the upper 80s and low 90s. Winters are cooler with temperatures typically falling into the 40s or 50s. Spring and fall are moderate with highs in the 70s or 80s. The area receives an average of 47 inches of rain a year, making it one of the wettest spots in Mississippi. The area also has plenty of sunshine, averaging over 200 days of sunshine each year!
Jefferson County, Mississippi gets 59 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Jefferson County averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 216 sunny days per year in Jefferson County. The US average is 205 sunny days.
Jefferson County gets some kind of precipitation, on average, 99 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 91 degrees
Winter Low: the January low is 36
Rain: averages 59 inches of rain a year
Snow: averages 0 inches of snow a year