Dayton, OH Climate

Summary Graph

The summary climate graph for Dayton, OH shows a selection of temperature, rainfall and snow minimum, mean and maximum measures over the course of a year. Click on each of the measures in the key to toggle them on and off.

Graph of average and extreme temperature ranges by day for Dayton, OH.


The warmest month in Wright Patterson Air Force Base, Dayton, Ohio is July with an average high temperature of 85.5°F. The hottest day on record was July 14 1936 when the temperature hit 106.3°F. During January the overnight temperature drops to an average of 22.5°F with the lowest temperature of -20.0°F being recorded on January 19 1994.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

14 Jul 1936106.3°F
28 Jun 2012103.8°F
25 Jun 1988102.9°F
7 Jul 2012102.9°F
28 Jun 1944102.4°F

The warmest months on average were:

July 201292.3°F
July 193692.2°F
July 198890.5°F
July 201190.5°F
July 194490°F

The coldest days on record are:

19 Jan 1994-20°F
17 Jan 1977-17.9°F
22 Dec 1989-16.8°F
24 Jan 1963-15.9°F
21 Jan 1984-15.9°F

The coldest months on average were:

January 19777.5°F
February 19788.2°F
January 19408.5°F
February 200711.8°F
January 197813°F


The wettest month by average rainfall in Dayton, OH is July with an average of 2.3 inches of rain falling on 11 to 12 days.Although in April it typically rains on more days with 2.0 inches falling in 14 to 15 days. The driest month in Dayton, OH is February with an average of 1.2 inches of rain falling on 9 to 10 days.

Wettest Days

The wettest days on record are:

6 August 19813 inches
25 August 19822.9 inches
16 August 19852.9 inches
6 August 19952.9 inches
31 August 20052.3 inches

Wettest Months

The wettest months on record are:

August 197410.6 inches
April 201110.5 inches
November 198510 inches
September 20119.7 inches
May 19909.3 inches

Driest Months

The driest months on record are:

June 19360 inches
July 19360 inches
August 19360 inches
December 19360 inches
January 19370 inches