Pittsburgh, Pennsylvania Weather
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Climate of Pittsburgh: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Pittsburgh, with average daytime highs around 29°C. January is the coolest, when nights typically fall to about -7°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 36°C, so the seasons feel very different from each other.
The area receives about 990 mm of rain in a typical year. Most of it falls from June, and June is the wettest month at roughly 105 mm.
For outdoor plans and travel, May and July to September usually offer the most comfortable weather in Pittsburgh, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 1° | -7° | 73 mm | 87% |
| Feb | 3° | -6° | 68 mm | 86% |
| Mar | 9° | -2° | 78 mm | 82% |
| Apr | 16° | 4° | 85 mm | 78% |
| May | 22° | 10° | 94 mm | 78% |
| Jun | 26° | 15° | 105 mm | 77% |
| Jul | 29° | 17° | 91 mm | 72% |
| Aug | 29° | 16° | 81 mm | 69% |
| Sep | 25° | 12° | 85 mm | 71% |
| Oct | 17° | 6° | 84 mm | 76% |
| Nov | 10° | 0° | 68 mm | 81% |
| Dec | 4° | -4° | 79 mm | 86% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Pittsburgh. Values describe typical conditions, not a forecast.
About Pittsburgh weather
Pittsburgh is a place in Pennsylvania's humid continental climate, from the Appalachians to the Delaware valley, located about 414 km west of Philadelphia. Pittsburgh gets warm, humid summers (June–August) each year. Pittsburgh closes out the year with cold winters (December–February) with regular snow. This page shows live, auto-refreshing weather for Pittsburgh: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
Pittsburgh is about 414 km west of Philadelphia, in Pennsylvania.
Pittsburgh sees cold winters (December–February) with regular snow.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Pittsburgh's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Pittsburgh, with average daytime highs of about 29°C and nights around 17°C.
The coldest nights come in January, when the average low is about -7°C and daytime highs reach around 1°C. Frost is possible on clear, calm nights.
Pittsburgh receives about 990 mm of rain in a typical year. June is the wettest month at roughly 105 mm, the only month that averages more than 100 mm.
May and July to September usually offer the most comfortable weather in Pittsburgh, with mild daytime temperatures and little rain.
In November Pittsburgh typically sees daytime highs near 10°C and lows near 0°C, with about 68 mm of rain over the month and average humidity around 81%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Pittsburgh updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Pittsburgh's day-to-day weather follows the broader pattern of Pennsylvania described above. See the hourly weather forecast or the air quality index for more detail.