Westmoreland County weather, town by town
63 places in Westmoreland County, Pennsylvania, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1926 to 2026. Station extremes, not official state records.
Westmoreland County Weather Facts
Westmoreland County has 63 places on myweatherrock (35 boroughs, 21 census-designated places, 6 cities, 1 municipality), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 105°F at Donora 1 Sw on July 20, 1930. The coldest night is -30°F at Salina 3 W on January 21, 1994. The wettest day brought 5.99 inches of rain at Salina 3 W on September 18, 2004. The biggest single-day snow measured 29.49 inches at Laurel Summit on February 6, 2010. Those are station measurements from NOAA's daily records, 1926 to 2026, not official state records. By area the largest place is Murrysville, about 37 square miles.
About Westmoreland County weather
The map on the Now tab shows every Westmoreland County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 63 Westmoreland County towns with station normals, the warmest month is July, when the day usually reaches 83°F, and the coldest is January, when the night usually falls to 20°F. January is the wettest, with rain on about 15 days. July afternoons run from about 75°F in Laurel Mountain to 86°F in Scottdale. January nights run from about 15°F in Laurel Mountain to 23°F in Adamsburg.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Westmoreland County weather records
Measured at the NOAA stations serving these towns, daily records 1926 to 2026. Station extremes, not official state records.
Common questions about Westmoreland County weather
- What is the hottest temperature recorded at a Westmoreland County station?
- 105°F at Donora 1 Sw on July 20, 1930, in the NOAA daily station records myweatherrock holds (1926 to 2026).
- What is the coldest temperature recorded at a Westmoreland County station?
- -30°F at Salina 3 W on January 21, 1994.
- What is the most rain a Westmoreland County station has measured in one day?
- 5.99 inches at Salina 3 W on September 18, 2004.
- What is the biggest one-day snowfall at a Westmoreland County station?
- 29.49 inches at Laurel Summit on February 6, 2010.
- How many Westmoreland County towns have a weather page here?
- 63: 35 boroughs, 21 census-designated places, 6 cities, 1 municipality. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Westmoreland County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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