Florissant, MO has a humid continental climate, characterized by hot summers and cold winters. The average temperature in the summer months ranges from 78°F to 91°F with occasionally higher temperatures and high humidity. In the winter months, temperatures drop to around 34°F and can dip below freezing during cold spells. Rainfall is distributed fairly evenly throughout the year with each month receiving at least 2 inches of precipitation on average.
Florissant, Missouri gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Florissant averages 13 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Florissant. The US average is 205 sunny days.
Florissant gets some kind of precipitation, on average, 104 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.
Summer High: the July high is around 89 degrees
Winter Low: the January low is 23
Rain: averages 42 inches of rain a year
Snow: averages 13 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for Florissant is 7.2 (10=best), which means it is more comfortable than most places in Missouri.
7.4 / 5.6
Summer / Winter
September, May and October are the most pleasant months in Florissant, while January and December are the least comfortable months.