Pittsburgh, PA weather and climate in 2025
Day
29 °C
Night
17 °C
Sea
0 °C
Precipitation
96 mm
in month
Rainy days
12 days
in month
Daylight
15 hours
average
Sunshine
8 hours
average
Humidity
70 %
Day
29 °C
Night
17 °C
Sea
0 °C
Precipitation
96 mm
in month
Rainy days
12 days
in month
Daylight
15 hours
average
Sunshine
8 hours
average
Humidity
70 %
Overview: Pittsburgh, PA
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Weather overview for Pittsburgh, PA
Weather overview
Pittsburgh's climate varies greatly with its seasons. January often has chilly days with average highs of 3 °C (38 °F), while the wettest month typically is May with a rainfall of 102 mm (4.00 in). The summer can heat up to average highs of 29 °C (85 °F) in July, and the lowest humidity is found in April with an average of 62 %. Pittsburgh does not have a sea, so sea temperature data is not applicable.
January weather
January in Pittsburgh greets residents with a brisk chill as night temperatures hover around -6 °C (21 °F). The potential for snow is heightened with an average of 12 days of precipitation. Daytime temperatures peak at around 3 °C (38 °F), challenging the resolve of those embracing outdoor activities.
February weather
February's cold grasp loosens slightly with daytime highs reaching an average of 5 °C (41 °F). The skies remain overcast on many days, offering less sun than many might hope for, with an average of 4 hours of sunshine per day.
March weather
In March, Pittsburgh glimpses the onset of spring, though intermittent cold snaps remind us winter lingers. With an average high of 11 °C (51 °F), chilly winds can still necessitate a jacket, despite the budding flora.
April weather
April offers a more definitive shift toward spring with temperatures peaking at 18 °C (64 °F). The city’s flora begin to bloom, ushered in by the moderate rain and an average of 6 hours of daily sunshine.
May weather
May introduces warmer days averaging 23 °C (73 °F), complementing the blossoming greenery. However, it's also Pittsburgh's wettest month with an average of 102 mm (4.00 in) of rainfall. Residents revel in the increased sunlight, tallying up to 7 hours per day.
June weather
June brings with it the promise of summer, with average temperatures climbing to 27 °C (81 °F). Humidity begins to rise as well, and with 13 days of wet days, thunderstorms are not uncommon.
July weather
The heat peaks in July with an average high of 29 °C (85 °F). With 12 days of precipitation, Pittsburgh experiences sporadic but intense summer storms, keeping the city lush and vibrant.
August weather
August's warmth lingers with average highs of 29 °C (83 °F). Although the frequency of rainy days dips slightly to 11 days, the city's summertime greenery remains refreshed.
September weather
September witnesses a retreat from the height of summer, with average daytime temperatures moderating to 25 °C (76 °F). The change in seasons is gradual but marked by the dwindling number of sunlight hours.
October weather
October ushers in the full spirit of autumn with average highs at 18 °C (65 °F). Pumpkin patches and fall festivities align perfectly with the crisp air and occasional rainfall of 65 mm (2.57 in).
November weather
November brings a notable chill to Pittsburgh, as daytime highs dip to 12 °C (53 °F). The approach of winter can be seen in the barren trees and the chilling winds that sweep through the city.
December weather
December's festive cheer is met with the return of cold weather, as days average a high of only 5 °C (41 °F), and nights can plunge below the freezing mark. The holiday lights twinkle all the more brightly against the season's early nightfall.
FAQs
How should I dress for a day out in Pittsburgh during January?
Layering is key in January! Think thermal undergarments, a warm sweater, and a heavy coat. Don't forget a hat, gloves, and a scarf to brave the outdoor chill of an average high of 3 °C (38 °F).
Is February much warmer than January in Pittsburgh?
February is a bit warmer, with average daytime highs of 5 °C (41 °F), but the difference is modest. Nights remain cold, so keep your warm attire handy.
Does March feel like spring in Pittsburgh?
March flirts with spring-like weather, boasting daytime highs of 11 °C (51 °F), but don’t retire your winter coat just yet — the air can still be quite brisk, especially in the evenings.
Can I start wearing lighter clothes in Pittsburgh in April?
Lighter clothes can definitely start making their way into your daily wear, with daytime highs of 18 °C (64 °F). Just keep a sweater on hand for variable temperatures, especially at night!
What temperatures can I anticipate for Pittsburgh in May?
Pittsburgh's May is pleasantly warm, with average highs of 23 °C (73 °F) — perfect for enjoying spring's full bloom.
How does Pittsburgh's weather change in June?
June marks a clear transition to summer, with rising temperatures and increased humidity hinting at the season ahead. Daytime highs average 27 °C (81 °F), making air conditioning a valued amenity.
Is July the hottest month in Pittsburgh?
Indeed, July typically hosts the year's highest temperatures, with an average daytime high of 29 °C (85 °F). Staying hydrated and finding shade become priorities on the hottest days.
Is August much cooler than July in Pittsburgh?
August remains warm with little relief from July’s heat, only marginally cooler with an average high temperature of 29 °C (83 °F). It's still prime time for summer activities.
What's the weather like in Pittsburgh as autumn approaches?
The weather begins to cool with hints of fall, yet days can still reach a comfortable 25 °C (76 °F). Evenings start to get noticeably cooler as summer wanes.
What kind of temperatures can I expect in Pittsburgh during October?
October is distinctly autumnal, with average highs of 18 °C (65 °F). The chill in the air grows, reminding us that winter isn't far behind.
Does Pittsburgh get very cold in November?
Cold starts to take a firm hold in November with average highs of just 12 °C (53 °F). Gloves and a warm scarf will become your go-to accessories.
What are typical daytime temperatures in Pittsburgh in December?
December days are chilly, with temperatures often cresting only around 5 °C (41 °F). It's a time for warm drinks and cozy gatherings indoors.
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