What is the hottest month in Pittsburgh?

July is Pittsburgh's hottest month, with the highest average daily high of the year. The month-by-month table above shows Pittsburgh's exact average high and low for each month, based on the 1991–2020 climate normals — the standard 30-year reference period meteorologists use.

What is the coldest month in Pittsburgh?

January is Pittsburgh's coldest month, with the lowest average daily low of the year. The averages-by-month chart above gives the exact average high and low for every month, so you can see how cold a typical winter day runs.

How much does it rain in Pittsburgh?

Pittsburgh's total annual precipitation and its wettest and driest months are shown in the rainfall-by-month section above. Those figures are 1991–2020 normals — the average monthly precipitation total across that 30-year window — so they reflect a typical year rather than any single wet or dry season.

What months are best to visit Pittsburgh?

The most comfortable months in Pittsburgh are usually the shoulder seasons — spring and fall — when temperatures sit between the summer peak and winter low and rainfall is moderate. Compare the average high, low, and precipitation for each month in the table above to pick the window that fits the weather you want.

Has Pittsburgh gotten hotter?

There isn't enough data to say. The warming-stripes chart above plots Pittsburgh's annual mean temperature for every complete year of station data from 1936 to 2024, but no trend line is fitted: the latest stretch of complete years with no gap over 10 years is 2001–2024, only 24 years (a trend needs at least 30). A shorter or broken record can't separate a climate trend from normal year-to-year swings.

What is the record high temperature in Pittsburgh?

Pittsburgh's all-time record high — the hottest single day in the station record — is shown in the records section above, along with the date it occurred. Records are drawn from the nearest long-term weather station's full daily history, which begins in 1935, so they capture the most extreme heat on record, not just a typical summer day.

What is the record low temperature in Pittsburgh?

Pittsburgh's all-time record low and the date it was set appear in the records section above. Like the record high, it comes from the station's full daily history back to 1935, so it reflects the coldest day on record rather than an average winter low.

Pittsburgh, Pennsylvania Climate

Pittsburgh weather by month — average highs and lows, rainfall, all-time records, and the warming record since 1936

Hottest month: 83°FJuly average high
Coldest month: 22°FJanuary average low
Precipitation: 41.3 ina year
Wettest month: June4.6 in on average

1991–2020 NOAA climate normals

At 10:08 AM EDT on Sep 21 it was 60°F in Pittsburgh — 2° below the 62°F typical for that hour (estimated from the Sep 21 normal high of 73°F and low of 54°F, interpolated from the monthly normals).

Pittsburgh weather by month

Average high, low, and rainfall for every month, from Pittsburgh’s 1991–2020 climate normals, the standard 30-year reference period. Each band runs from the month’s average low to its average high: a tall band is a big day-to-night swing.

37°22°

3.1″Jan

40°24°

2.6″Feb

49°31°

3.2″Mar

63°42°

3.4″Apr

72°52°

4.1″May

79°60°

4.6″Jun

83°64°

3.9″Jul

81°63°

3.8″Aug

75°56°

3.5″Sep

63°45°

3.1″Oct

51°35°

3.0″Nov

41°28°

3.0″Dec

Average high → low (°F)Rainfall (inches)1991–2020 normals

Pittsburgh monthly weather averages — average high, average low, and rainfall for each month, from the 1991–2020 U.S. Climate Normals (NOAA).
Month	Avg High	Avg Low	Rainfall
January	37°F	22°F	3.1 in
February	40°F	24°F	2.6 in
March	49°F	31°F	3.2 in
April	63°F	42°F	3.4 in
May	72°F	52°F	4.1 in
June	79°F	60°F	4.6 in
July	83°F	64°F	3.9 in
August	81°F	63°F	3.8 in
September	75°F	56°F	3.5 in
October	63°F	45°F	3.1 in
November	51°F	35°F	3.0 in
December	41°F	28°F	3.0 in
Annual	61°F	44°F	41.3 in

Pittsburgh’s warming record since 1936

No trend published: the latest stretch of complete years with no gap over 10 years is 2001–2024, only 24 years (a trend needs at least 30)Gaps are years with incomplete station data.

Not what a typical year looks like, but how the typical year has changed. Each stripe is one complete year’s average temperature at the station, 1936 to 2024, colored against the mean of those years: blue for cooler years, red for warmer ones. No trend line is fitted to them: the latest stretch of complete years with no gap over 10 years is 2001–2024, only 24 years (a trend needs at least 30).

Pittsburgh rainfall by month

Pittsburgh averages 41.3 inches of precipitation a year. The wettest month is June and the driest is February.

Pittsburgh temperature records

All-time record high: 102°Fset July 14, 1936
All-time record low: -16°Fset January 23, 1936

Records are drawn from the nearest long-term weather station’s full daily history, so they capture the most extreme single day Pittsburgh has recorded — not a typical seasonal high or low.

Frequently asked

What is the hottest month in Pittsburgh?: July is Pittsburgh's hottest month, with the highest average daily high of the year. The month-by-month table above shows Pittsburgh's exact average high and low for each month, based on the 1991–2020 climate normals — the standard 30-year reference period meteorologists use.
What is the coldest month in Pittsburgh?: January is Pittsburgh's coldest month, with the lowest average daily low of the year. The averages-by-month chart above gives the exact average high and low for every month, so you can see how cold a typical winter day runs.
How much does it rain in Pittsburgh?: Pittsburgh's total annual precipitation and its wettest and driest months are shown in the rainfall-by-month section above. Those figures are 1991–2020 normals — the average monthly precipitation total across that 30-year window — so they reflect a typical year rather than any single wet or dry season.
What months are best to visit Pittsburgh?: The most comfortable months in Pittsburgh are usually the shoulder seasons — spring and fall — when temperatures sit between the summer peak and winter low and rainfall is moderate. Compare the average high, low, and precipitation for each month in the table above to pick the window that fits the weather you want.
Has Pittsburgh gotten hotter?: There isn't enough data to say. The warming-stripes chart above plots Pittsburgh's annual mean temperature for every complete year of station data from 1936 to 2024, but no trend line is fitted: the latest stretch of complete years with no gap over 10 years is 2001–2024, only 24 years (a trend needs at least 30). A shorter or broken record can't separate a climate trend from normal year-to-year swings.
What is the record high temperature in Pittsburgh?: Pittsburgh's all-time record high — the hottest single day in the station record — is shown in the records section above, along with the date it occurred. Records are drawn from the nearest long-term weather station's full daily history, which begins in 1935, so they capture the most extreme heat on record, not just a typical summer day.
What is the record low temperature in Pittsburgh?: Pittsburgh's all-time record low and the date it was set appear in the records section above. Like the record high, it comes from the station's full daily history back to 1935, so it reflects the coldest day on record rather than an average winter low.