The Chattahoochee River valley draws people for many reasons, from solitary walks to enjoy nature, leisurely rafting through rocky shoals with friends, fishing misty waters at sunrise, and picnics on Sunday afternoons. Summers typically bring long spells of warm, humid weather, with average highs in the lower 90's and overnight lows from the upper 60's to lower 70's. Winters are more variable, with highs averaging from the mid 50's to lower 60's and lows averaging in the mid 30's, and mild weather often alternating with cold spells. Spring and autumn are characterized by much variability from day to day and from year to year.