CWS Forecast: Washington, PA

Unseasonably warm temperatures are expected across the Commonwealth on Thursday, with highs reaching the upper 70’s to low 80’s along with a chance of showers and thunderstorms throughout the day. Friday will remain warm with partly cloudy skies before temperatures begin to cool heading into the weekend. Saturday looks favorable for daytime tailgating, with mostly cloudy skies and temperatures near 70. Rain and thunderstorms are expected to move into the area Sunday morning, with heavy rain possible as the system passes through. Temperatures will then fall into the 60s, with mostly cloudy skies and scattered showers continuing through Monday and Tuesday. Wednesday will bring more cloudy conditions, with temperatures near 60 and a continued chance of morning rain.

Today: Thursday, September 17th, 2026

Tonight: Thursday, September 17th, 2026

Tomorrow: Friday, September 18th, 2026

High: 82°F

Low: 70°F

High: 80°F

Scattered thunderstorms throughout the day.

More rain and thunder into the night.

Partly cloudy throughout the day.

Day Two: Friday, September 18th, 2026

Partly cloudy throughout the day, with a clear night sky.

High: 80°F 

Low: 70°F 

Day Three: Saturday, September 19th, 2026

Warm temperatures with a partly cloudy morning. Will clear throughout the day and into the night.

High: 77°F

Low: 60°F

Day Four: Sunday, September 20th, 2026

Rain and thunder throughout the day and into the evening. Storms will lessen as the night continues.

High: 76°F

Low: 59°F

Day Five: Monday, September 21st, 2026

Cloudy skies with scattered showers throughout the day. Clouds are persistent but will lessen late at night.

High: 78°F

Low: 63°F

Last Updated on September 16, 2026 at 11:01 pm