Pittsburgh (PA) Weather & Climate: Best Time to Visit

The climate in Pittsburgh is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 2°C (36°F).

At night, temperatures range from around 18°C (64°F) in July to -7°C (19°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Pittsburgh receives mid-range precipitation levels, with 975 mm (38 in) annually. Pittsburgh experiences moderate seasonal variation in rainfall, with monthly averages ranging from 116 mm (4.6 in) in June, the wettest month, and 58 mm (2.3 in) in November, the driest month. For more details, please visit our Pittsburgh Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Pittsburgh can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 8.5 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.4 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Pittsburgh.

The city experiences its highest humidity in September, reaching 72%. In April, the humidity drops to its lowest level at 59%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed over the year ranges from 2 m/s (4 knots) in August to 4 m/s (8 knots) in January, February, March, April, November and December. What does this mean?

The mean monthly wind speed over the year (meters per second)