Allegheny County · Pennsylvania
Pittsburgh, PA weather averages
NOAA climate normals for 1991-2020, measured at Pittsburgh Allegheny Co Ap, 13.5 km from the city centre — month by month temperature, rain and snow.
Quick answer
Pittsburgh averages a daily high of 60.5°F and a daily low of 43.1°F across the year, with 39.29 inches of precipitation. July is the warmest month at 82.4°F and January the coldest at 21.8°F.
- Average annual high
- 60.5°FWarmest month July
- Average annual low
- 43.1°FColdest month January
- Precipitation per year
- 39.29 inWettest month May
- Snowfall per year
- —104.5 days at or below 32°F
Pittsburgh weather month by month
Normal daily high and low, precipitation and snowfall for each month, 1991-2020.
| Month | High °F | Low °F | Precip in | Snow in | Range |
|---|---|---|---|---|---|
| January | 35.8 | 21.8 | 2.73 | — | 21.8 to 35.8 degrees |
| February | 39.3 | 24 | 2.68 | — | 24 to 39.3 degrees |
| March | 49 | 31 | 3.1 | — | 31 to 49 degrees |
| April | 61.6 | 41.6 | 3.15 | — | 41.6 to 61.6 degrees |
| May | 70.6 | 50.7 | 4.17 | — | 50.7 to 70.6 degrees |
| June | 78.6 | 59.3 | 4.04 | — | 59.3 to 78.6 degrees |
| July | 82.4 | 63.3 | 3.77 | — | 63.3 to 82.4 degrees |
| August | 81.1 | 62.5 | 3.51 | — | 62.5 to 81.1 degrees |
| September | 73.6 | 55.4 | 3.35 | — | 55.4 to 73.6 degrees |
| October | 62.6 | 44 | 2.52 | — | 44 to 62.6 degrees |
| November | 50.8 | 35.7 | 3.35 | — | 35.7 to 50.8 degrees |
| December | 39.5 | 26.4 | 2.92 | — | 26.4 to 39.5 degrees |
Source: NOAA NCEI, U.S. Climate Normals 1991-2020 — station USW00014762, Pittsburgh Allegheny Co Ap · rates as published for 1991-2020 normals
How to read Pittsburgh climate normals
What a climate normal is, and what it is not.
A normal is the average of thirty years of daily observations at one station — here Pittsburgh Allegheny Co Ap, 13.5 km from the centre of Pittsburgh. It describes a typical year, so any single year will run warmer, cooler, wetter or drier. Readings taken at an airport on the edge of town usually sit a degree or two below a dense downtown on summer nights. Pittsburgh sees about 5.7 days a year at or above 90°F.
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Other Pittsburgh data on this site.