The climate in Jefferson, LA County is subtropical and humid. During the summer months, temperatures can reach into the high 90s with high humidity levels making it feel even hotter. Winters are mild with temperatures typically staying above freezing during the day and dropping below freezing at night. Precipitation is plentiful throughout the year, with most rain coming during the late spring months between March and June. Snowfall is rare but does occur occasionally in late winter or early spring.
Jefferson County, Louisiana gets 64 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 219 sunny days per year in Jefferson County. The US average is 205 sunny days.
Jefferson County gets some kind of precipitation, on average, 111 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 45
Rain: averages 64 inches of rain a year
Snow: averages 0 inches of snow a year