Pittsburgh, PA Climate & Monthly Averages
The climate of Pittsburgh
Located in Pennsylvania, United States, Pittsburgh experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 84°F (29°C) in July and dip to about 38°F (3°C) in January, with around 52.4 inches (1330 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: July - highs near 84°F (29°C)
- Coldest month: January - highs near 38°F (3°C)
- Record high: 96°F (36°C) · Record low: -21°F (-29°C) (2015–2024)
- Wettest month: June (16 rainy days) · Sunniest: July (11.4 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
- Snow: about 15 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 84°F (29°C) and overnight lows stay near 66°F (19°C). The coolest month is January, with typical highs of 38°F (3°C) and lows around 23°F (-5°C). Based on 2015–2024 weather data, temperatures have reached as high as 96°F (36°C) and dropped as low as -21°F (-29°C).
Rain, sun and snow
June is usually the wettest month. It brings about 6.0 inches (153 mm) of rain over 16 days, while November is the driest. July brings the most sunshine, averaging 11.4 hours of sun a day. Snow falls on about 15 days in a typical year, mostly from November through April.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 38° | 23° | 13 | 3.8 in | 4.5 h/day | 72% |
| February | 43° | 25° | 12 | 4.1 in | 6.1 h/day | 69% |
| March | 51° | 32° | 14 | 4.4 in | 7.2 h/day | 67% |
| April | 62° | 41° | 15 | 5.0 in | 8.6 h/day | 68% |
| May | 71° | 53° | 15 | 5.1 in | 10.0 h/day | 73% |
| June | 79° | 61° | 16 | 6.0 in | 11.3 h/day | 73% |
| July | 84° | 66° | 15 | 4.6 in | 11.4 h/day | 75% |
| August | 82° | 65° | 14 | 4.4 in | 10.8 h/day | 75% |
| September | 77° | 59° | 11 | 4.2 in | 9.5 h/day | 75% |
| October | 65° | 48° | 11 | 4.1 in | 7.4 h/day | 74% |
| November | 52° | 36° | 10 | 2.9 in | 6.2 h/day | 71% |
| December | 44° | 30° | 12 | 3.7 in | 4.4 h/day | 74% |
Pittsburgh month by month
Pittsburgh weather in January
January brings highs around 38°F (3°C), lows near 23°F (-5°C), about 13 wet days and roughly 4 snowy days - typically the coldest month of the year in Pittsburgh.
Pittsburgh weather in February
February brings highs around 43°F (6°C), lows near 25°F (-4°C), about 12 wet days and roughly 4 snowy days.
Pittsburgh weather in March
March brings highs around 51°F (11°C), lows near 32°F (0°C), about 14 wet days and roughly 2 snowy days.
Pittsburgh weather in April
April brings highs around 62°F (16°C), lows near 41°F (5°C), about 15 wet days and roughly 1 snowy days.
Pittsburgh weather in May
May brings highs around 71°F (22°C), lows near 53°F (12°C), about 15 wet days.
Pittsburgh weather in June
June brings highs around 79°F (26°C), lows near 61°F (16°C), about 16 wet days - typically the wettest month of the year in Pittsburgh.
Pittsburgh weather in July
July brings highs around 84°F (29°C), lows near 66°F (19°C), about 15 wet days - typically the hottest month and the sunniest month of the year in Pittsburgh.
Pittsburgh weather in August
August brings highs around 82°F (28°C), lows near 65°F (18°C), about 14 wet days.
Pittsburgh weather in September
September brings highs around 77°F (25°C), lows near 59°F (15°C), about 11 wet days.
Pittsburgh weather in October
October brings highs around 65°F (18°C), lows near 48°F (9°C), about 11 wet days.
Pittsburgh weather in November
November brings highs around 52°F (11°C), lows near 36°F (2°C), about 10 wet days - typically the driest month of the year in Pittsburgh.
Pittsburgh weather in December
December brings highs around 44°F (6°C), lows near 30°F (-1°C), about 12 wet days and roughly 3 snowy days.
Seasons in Pittsburgh
Spring (March through May)
Spring in Pittsburgh is mild, with daytime highs averaging 61°F (16°C) and nights around 42°F (6°C); expect showers on roughly 44 days across the season, plus around 4 snowy days.
Summer (June through August)
Summer in Pittsburgh runs hot, with daytime highs averaging 82°F (28°C) and nights around 64°F (18°C); expect showers on roughly 44 days across the season.
Fall (September through November)
Fall in Pittsburgh is mild, with daytime highs averaging 65°F (18°C) and nights around 48°F (9°C); expect showers on roughly 31 days across the season.
Winter (December through February)
Winter in Pittsburgh runs cold, with daytime highs averaging 42°F (5°C) and nights around 26°F (-3°C); expect showers on roughly 37 days across the season, plus around 11 snowy days.
Climate questions, answered
What is the average temperature in Pittsburgh?
Is Pittsburgh hot in summer?
Is Pittsburgh cold in winter?
How many rainy days does Pittsburgh get in a year?
Best time to visit Pittsburgh
The best time to visit Pittsburgh is generally April to September, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 76°F (24°C).
Pack for Pittsburgh with a heavy insulated coat, hat and gloves for winter; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - July nights average 66°F (19°C).
Pittsburgh temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.