Pittsburgh, PA Weather by Month and Climate Averages
Monthly normals · Rain · Snow Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Pittsburgh, PA?
Pittsburgh, PA gets 38.3 in of precipitation a year over about 134 rainy days. July is the warmest month (average high 85°F) and January the coldest (average low 22°F).
Station: EMSWORTH L/D OHIO RVR, 11 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1991–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Humid continental climate
Pittsburgh, PA has hot summers and chilly winters. Daytime highs range from about 39°F in January to 85°F in July. July is usually the wettest month, and snow falls in winter. The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 70°F.
Season
Months
Avg low
Avg high
Winter
Dec–Feb
24°
41°
Spring
Mar–May
41°
63°
Summer
Jun–Aug
63°
83°
Autumn
Sep–Nov
45°
65°
How much rain does Pittsburgh get?
Pittsburgh gets 38.3 in of precipitation in an average year, spread over about 134 days with measurable rain. That is more rainy days than 88% of the US.
July is the wettest month, with 3.6 in. February is the driest, with 2.8 in. January has the most rainy days, about 14.
The longest dry spell in the last five years lasted 17 days, to September 24, 2024.
From September 2025 to August 2026 Pittsburgh got 42.4 in of rain, against a normal of 38.3 in for those months. March 2026 had the most, with 7.0 in.
Monthly rainfall, September 2025 to August 2026, in inches. The dash on each month marks its 1991–2020 normal.
In January, Pittsburgh averages a high of 39°F and a low of 22°F. It gets 3.4 in of precipitation over about 14 rainy days. Estimated sunshine is 20% of daylight hours, derived from ERA5 cloud cover. The January record high is 72°F (2005) and the record low is -13°F (1994).
Pittsburgh weather in February
In February, Pittsburgh averages a high of 42°F and a low of 24°F. It gets 2.8 in of precipitation over about 12 rainy days. Estimated sunshine is 31% of daylight hours, derived from ERA5 cloud cover. The February record high is 78°F (2018) and the record low is -10°F (2015).
Pittsburgh weather in March
In March, Pittsburgh averages a high of 51°F and a low of 31°F. It gets 3.2 in of precipitation over about 12 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The March record high is 85°F (1998) and the record low is -2°F (2015).
Pittsburgh weather in April
In April, Pittsburgh averages a high of 64°F and a low of 41°F. It gets 3.2 in of precipitation over about 12 rainy days. Estimated sunshine is 35% of daylight hours, derived from ERA5 cloud cover. The April record high is 88°F (2002) and the record low is 20°F (2013). April is one of the most comfortable months to visit.
Pittsburgh weather in May
In May, Pittsburgh averages a high of 73°F and a low of 51°F. It gets 3.5 in of precipitation over about 12 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The May record high is 94°F (2007) and the record low is 29°F (2018). May is one of the most comfortable months to visit.
Pittsburgh weather in June
In June, Pittsburgh averages a high of 81°F and a low of 61°F. It gets 3.5 in of precipitation over about 11 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The June record high is 99°F (1999) and the record low is 41°F (2020).
Pittsburgh weather in July
In July, Pittsburgh averages a high of 85°F and a low of 65°F. It gets 3.6 in of precipitation over about 10 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The July record high is 102°F (1995) and the record low is 49°F (2014).
Pittsburgh weather in August
In August, Pittsburgh averages a high of 84°F and a low of 63°F. It gets 3.3 in of precipitation over about 9 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The August record high is 102°F (1995) and the record low is 47°F (2025).
Pittsburgh weather in September
In September, Pittsburgh averages a high of 78°F and a low of 56°F. It gets 3.2 in of precipitation over about 9 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The September record high is 96°F (2011) and the record low is 37°F (1992). September is one of the most comfortable months to visit.
Pittsburgh weather in October
In October, Pittsburgh averages a high of 65°F and a low of 45°F. It gets 2.8 in of precipitation over about 10 rainy days. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. The October record high is 91°F (2019) and the record low is 26°F (1992). October is one of the most comfortable months to visit.
Pittsburgh weather in November
In November, Pittsburgh averages a high of 53°F and a low of 35°F. It gets 2.8 in of precipitation over about 11 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The November record high is 80°F (2016) and the record low is 12°F (2005).
Pittsburgh weather in December
In December, Pittsburgh averages a high of 43°F and a low of 28°F. It gets 3.0 in of precipitation over about 12 rainy days. Estimated sunshine is 23% of daylight hours, derived from ERA5 cloud cover. The December record high is 75°F (1999) and the record low is 2°F (2008).
Sunshine, humidity and wind in Pittsburgh
September is the sunniest month in Pittsburgh, with estimated sunshine of 48% of daylight hours from ERA5 cloud cover. January is the cloudiest, at 20%. The annual cloud-cover estimate is 37% of daylight hours; it is not a measurement of sunshine duration. Pittsburgh is cloudier than 93% of the US.
Humidity peaks in January at 72% and is lowest in March at 58%.
Pittsburgh has about 18 days a year above 90°F. Pittsburgh is cooler than 63% of the US.
The first fall freeze in Pittsburgh typically comes around November 1, and the last spring freeze around April 17. That leaves a frost-free growing season of about 198 days.
Pittsburgh weather records
These records cover EMSWORTH L/D OHIO RVR during 1991–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Pittsburgh station is 102°F, on July 15, 1995. The coldest is -13°F, on January 21, 1994.
The wettest day in the available station history brought 6.0 in of precipitation, on June 18, 2009.
33 all-time records have been set at the station since 1991.
The best time to visit Pittsburgh
The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 70°F.
Winter (December–February) is chilly, with average highs around 41°F and lows near 24°F. Snow is possible.
Spring (March–May) is mild, with average highs around 63°F and lows near 41°F.
Summer (June–August) is hot, with average highs around 83°F and lows near 63°F.
Autumn (September–November) is mild, with average highs around 65°F and lows near 45°F.
Pittsburgh climate questions
How much rain does Pittsburgh get?
Pittsburgh gets 38.3 in of precipitation in an average year, over about 134 rainy days.
What is the wettest month in Pittsburgh?
July is the wettest month in Pittsburgh, with 3.6 in. February is the driest, with 2.8 in.
How many rainy days does Pittsburgh have a year?
Pittsburgh has about 134 days with measurable rain in an average year. January has the most, about 14.
What is the hottest month in Pittsburgh?
July is the warmest month in Pittsburgh, with an average high of 85°F.
What is the coldest month in Pittsburgh?
January is the coldest month in Pittsburgh, with an average low of 22°F.
What is the record high temperature in Pittsburgh?
Within the available 1991–2026 station history, the record high at the Pittsburgh station is 102°F, set on July 15, 1995. The record low is -13°F, on January 21, 1994.
What is the sunniest month in Pittsburgh?
September is the sunniest month in Pittsburgh, with estimated sunshine of 48% of daylight hours from ERA5 cloud cover. January is the cloudiest.
When is the first frost in Pittsburgh?
The first fall freeze in Pittsburgh typically comes around November 1. The last spring freeze is around April 17.
What is the best time to visit Pittsburgh?
The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 70°F.
