Williamson County Regional Airport
37° 45' 26" N , 89° 0' 48" W
Williamson County Regional Airport is a public use airport located 7 km west of the central business district of Marion, in Williamson County, Illinois.
Humid continental climate (Köppen climate classification Dfa) - characterized by four seasons: cold, windy, snowy winters, mild springs, hot, humid summers, and crisp and relatively short autumns. Precipitation reaches its lowest in January and February and peaks in summer and latter half of spring.