Pittsburgh, PA Climate

Summary Graph

The summary climate graph for Pittsburgh, PA 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 Pittsburgh, PA.

Temperature

The warmest month in Allegheny County Airport, Pittsburgh, Pennsylvania is July with an average high temperature of 83.4°F. The hottest day on record was July 16 1988 when the temperature hit 100.9°F. During January the overnight temperature drops to an average of 23.0°F with the lowest temperature of -26.9°F being recorded on January 17 1982.

Warmest Days

Warmest Months

Coldest Days

Coldest Months

The warmest days on record are:

16 Jul 1988100.9°F
7 Aug 198099.9°F
15 Jul 199599°F
29 Jun 201299°F
7 Jul 201299°F

The warmest months on average were:

July 199988.5°F
July 200587.5°F
July 201187.4°F
July 198887.3°F
August 199587.2°F

The coldest days on record are:

17 Jan 1982-26.9°F
19 Jan 1994-20°F
21 Jan 1985-15.9°F
17 Jan 1977-11.7°F
22 Dec 1989-9.8°F

The coldest months on average were:

January 19778°F
February 197813.7°F
February 197914.6°F
February 200715.5°F
January 197815.5°F

Rain

The wettest month in Pittsburgh, PA is May with an average of 1.5 inches of rain falling on 11 to 12 days. The driest month in Pittsburgh, PA is February with an average of 0.9 inches of rain falling on 7 to 8 days.

Wettest Days

The wettest days on record are:

26 November 20101.6 inches
27 November 20071.6 inches
3 November 19991.5 inches
7 November 19971.5 inches
8 November 19961.3 inches

Wettest Months

The wettest months on record are:

August 20079.2 inches
January 20057.9 inches
July 20066.8 inches
December 20086.7 inches
July 20126.6 inches

Driest Months

The driest months on record are:

February 19730 inches
March 19730 inches
April 19730 inches
May 19730 inches
June 19730 inches