Weather World
Prosperity, PA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Prosperity, PA Weather Forecast
Prosperity, PA Weather Forecast Date: 1102 PM EDT Fri Sep 11 2026
The area/counties/county of: Washington, including the cities of: Washington and Canonsburg.or toggle through each period.
Rest of Tonight... Mostly cloudy. Patchy fog. Warm. Near steady temperature in the mid 60s. East winds around 5 mph.
Saturday... Mostly cloudy. A slight chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the lower 80s. South winds 5 to 10 mph. Chance of rain 70%.
Saturday Night... Considerable cloudiness. Showers with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Warm with lows in the mid 60s. Southwest winds around 5 mph. Chance of rain 80%.
Sunday... Mostly cloudy in the morning, then partly sunny with a chance of showers in the afternoon. Humid with highs in the lower 80s. West winds 5 to 10 mph. Chance of rain 40%.
Sunday Night... Mostly cloudy with a chance of showers. Humid with lows around 60. West winds 5 to 10 mph, becoming northwest after midnight. Chance of rain 50%.
Monday... Partly cloudy. A chance of showers in the morning. Highs in the mid 70s. Chance of rain 40%.
Monday Night... Mainly clear. Lows in the mid 50s.
Tuesday... Mostly sunny. Highs around 80.
Tuesday Night... Mainly clear. Lows in the lower 60s.
Wednesday... Mostly sunny. Warm with highs in the mid 80s.
Wednesday Night... Partly cloudy. A chance of showers after midnight. Warm with lows in the mid 60s. Chance of rain 50%.
Thursday... Partly sunny with a chance of showers in the morning, then mostly cloudy with showers likely in the afternoon. Highs around 80. Chance of rain 70%.
Thursday Night... Mostly cloudy. Showers likely, mainly in the evening. Lows in the lower 60s. Chance of rain 70%.
POP = Probability of Precipitation
Prosperity Radar Loop
Use the map search tool if you want to place a location marker on the radar map...