National Weather Service United States Department of Commerce

Winter Storm from the Mexican Border in Texas to southern New England through Thursday

A widespread winter weather event is underway from southwest Texas into parts of southern New England. Most locations will see moderate to heavy rainfall before changing over during the overnight hours. Sleet and freezing rain are expected from south/central Texas into the Southeast while significant snowfall is expected from the southern Plains across the Mid-Atlantic into New England.
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Current Conditions

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Upper St. Clair PA

7 Day Forecast

For More Weather Information:

Pittsburgh, PA Local Forecast Office

Today

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

High: 20 °F

Tonight

Partly Cloudy

Partly
Cloudy

Low: 0 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 25 °F

Friday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 14 °F

Saturday

Slight Chance Rain/Snow Chance for Measurable Precipitation 20%

Slight Chc
Rain/Snow

High: 37 °F

Saturday
Night

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

Low: 26 °F

Sunday

Mostly Cloudy

Mostly
Cloudy

High: 39 °F

Sunday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 27 °F

Monday

Partly Sunny

Partly
Sunny

High: 42 °F

Detailed Forecast

  • Today Snow likely, mainly before 10am. Cloudy, with a high near 20. North wind around 8 mph. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.
  • Tonight Partly cloudy, with a low around 0. Northwest wind around 6 mph becoming calm in the evening.
  • Friday Mostly sunny, with a high near 25. Calm wind becoming southwest around 6 mph in the afternoon.
  • Friday Night Mostly cloudy, with a low around 14. Southwest wind 5 to 8 mph.
  • Saturday A slight chance of rain and snow showers between 3pm and 5pm, then a slight chance of rain showers after 5pm. Partly sunny, with a high near 37. Southwest wind 7 to 9 mph. Chance of precipitation is 20%.
  • Saturday Night A chance of rain and snow showers before 8pm, then a chance of snow showers. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
  • Sunday Mostly cloudy, with a high near 39.
  • Sunday Night Mostly cloudy, with a low around 27.
  • Monday Partly sunny, with a high near 42.
  • Monday Night Partly cloudy, with a low around 26.
  • Tuesday Mostly sunny, with a high near 49.
  • Tuesday Night Partly cloudy, with a low around 32.
  • Wednesday Mostly sunny, with a high near 52.