| NWS Forecast for: Jefferson County Issued by: National Weather Service Pittsburgh, PA Last Update: 122 AM EDT Sun May 17 2026 | |
| Overnight: Considerable cloudiness. Near steady temperature around 60. Southwest winds around 5 mph. Today: Mostly cloudy in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Southwest winds 5 to 10 mph. Chance of rain 40 percent. Tonight: Partly cloudy. A slight chance of showers and thunderstorms in the evening. Warm with lows in the lower 60s. South winds around 5 mph. Chance of rain 20 percent. Monday: Mostly sunny. Unseasonably warm with highs in the upper 80s. South winds 5 to 10 mph. Monday Night: Mainly clear. Warm with lows in the upper 60s. South winds 5 to 10 mph. Tuesday: Mostly sunny. Unseasonably warm with highs in the mid 80s. Tuesday Night: A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Warm with lows in the upper 60s. Chance of rain 50 percent. Wednesday: Showers. Highs in the mid 70s. Temperatures falling into the lower 70s in the afternoon. Chance of rain 80 percent. Wednesday Night: Mostly cloudy. A chance of showers in the evening. Much cooler with lows in the mid 40s. Chance of rain 50 percent. Thursday: Partly sunny in the morning, then becoming partly cloudy. Highs in the upper 60s. Thursday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s. Friday: Partly sunny in the morning, then becoming mostly cloudy. A 40 percent chance of showers. Highs in the upper 60s. Friday Night: Considerable cloudiness with a 50 percent chance of showers. Lows in the lower 50s. Saturday: Mostly cloudy with a chance of showers. Highs in the upper 60s. Chance of rain 50 percent. | |
| Zone Forecast: Jefferson County | |
Visit your local NWS office at: https://www.weather.gov/pbz/ |