Expires:202605201100;;324068 FPUS51 KPBZ 200302 ZFPPBZ Zone Forecast Product National Weather Service Pittsburgh PA 1102 PM EDT Tue May 19 2026 PAZ029-201100- Washington- Including the cities of Washington and Canonsburg 1102 PM EDT Tue May 19 2026 .REST OF TONIGHT...Mostly cloudy with a slight chance of showers and thunderstorms. Warm with lows in the upper 60s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent. .WEDNESDAY...A chance of thunderstorms. Showers. Highs in the mid 70s. Temperatures falling into the upper 60s in the afternoon. West winds 5 to 10 mph, becoming north with gusts up to 20 mph in the afternoon. Chance of rain 90 percent. .WEDNESDAY NIGHT...A slight chance of thunderstorms in the evening. Considerable cloudiness with a chance of showers. Much cooler. Less humid with lows in the upper 40s. North winds 5 to 10 mph. Chance of rain 50 percent. .THURSDAY...Mostly cloudy with a chance of showers in the morning, then partly sunny with a slight chance of showers in the afternoon. Highs in the upper 60s. Northeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy. A chance of showers after midnight. Lows in the lower 50s. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent. .FRIDAY...Showers likely in the morning, then showers in the afternoon. Highs in the mid 60s. Chance of rain 90 percent. .FRIDAY NIGHT...Showers with a chance of thunderstorms. Lows in the mid 50s. Chance of rain near 100 percent. .SATURDAY...Showers with a chance of thunderstorms. Highs in the lower 70s. Chance of rain near 100 percent. .SATURDAY NIGHT...A chance of thunderstorms. Showers, warm with lows around 60. Chance of rain 80 percent. .SUNDAY...Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70 percent. .SUNDAY NIGHT...Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers after midnight. Warm with lows around 60. Chance of rain 70 percent. .MEMORIAL DAY...Mostly cloudy with a chance of showers. Highs in the upper 70s. Chance of rain 50 percent. .MONDAY NIGHT...Mostly cloudy with a chance of showers. Warm with lows in the lower 60s. Chance of rain 50 percent. .TUESDAY...Mostly cloudy with a chance of showers. Highs in the upper 70s. Chance of rain 50 percent. $$