Allergy sufferers in the Southeast could be in for a groggy fall, as warm and wet months ahead will promote mold spore growth and prolong ragweed season, AccuWeather reports. Historically, the peak of allergy season for the South falls around Sept. 19, with the four to five weeks before and after that date typically producing the worst of fall allergies. "We're expecting some above-normal temperatures and wetness there for September and October," Alan Reppert, a meteorologist for the weather service, said.