Weather

Historical Weather Data for Mid September in Dayton OH

Mean low temp – 57F

Mean Temp – 66F

Mean high temp – 77F

Extreme low temp – 28F

Extreme high temp – 103F

Mean Relative Humidity (0600L): 88%

Maximum Monthly Precipitation: 8.00 inches

Mean Monthly Precipitation: 2.60 inches

Minimum Monthly Precipitation: 0.01 inches

Maximum 24 Hour Precipitation: 4.80 inches

Prevailing Wind Direction: South

Mean Wind Speed: 6 knots

Maximum Peak Gusts: 46 knots

Mean Cloud Cover: 40%

Number Days with Thunderstorms: 3

Number Days with Fog: 17

Percentage/Frequency for occurrence of ceilings below 3000 feet and/or visibility below 3 statute miles:

0300-0500L: 18%

0600-0800L: 28%

0900-1100L: 20%

1200-1400L: 15%