Saint Clair, Pennsylvania | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Mostly Cloudy
    57°
    Sunday 5/19
    Forecast night icon
    57°
    Mostly Cloudy
    Hourly
    Night Details
    Mostly clear late this evening then becoming mostly cloudy. Areas of fog. Lows in the upper 50s. Light and variable winds.
  • Forecast day icon
    Monday
    Partly Sunny
    76°
    Forecast night icon
    Night
    Partly Cloudy
    58°
    Monday 5/20
    Day
    76°
    Partly Sunny
    Forecast day icon
    Night
    58°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly sunny. Areas of fog in the morning. Highs in the upper 70s. Southeast winds around 5 mph.
    Night Details
    Partly cloudy. Lows in the upper 50s. South winds around 5 mph in the evening becoming light and variable.
  • Forecast day icon
    Tuesday
    Mostly Sunny
    81°
    Forecast night icon
    Night
    Mostly Clear
    60°
    Tuesday 5/21
    Day
    81°
    Mostly Sunny
    Forecast day icon
    Night
    60°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Very warm with highs in the lower 80s. Southwest winds around 5 mph.
    Night Details
    Mostly clear. Lows around 60. South winds around 5 mph.
  • Forecast day icon
    Wednesday
    Sunny
    85°
    Forecast night icon
    Night
    Partly Cloudy
    64°
    Wednesday 5/22
    Day
    85°
    Sunny
    Forecast day icon
    Night
    64°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Very warm with highs in the mid 80s.
    Night Details
    Partly cloudy. Lows in the mid 60s.
  • Forecast day icon
    Thursday
    50% Chance of Storms
    77°
    Forecast night icon
    Night
    50% Chance of Storms
    59°
    Thursday 5/23
    Day
    77°
    50% Chance of Storms
    Forecast day icon
    Night
    59°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.
    Night Details
    Mostly cloudy with a chance of showers and thunderstorms in the evening then partly cloudy after midnight. Lows in the mid 50s. Chance of rain 50 percent.
  • Forecast day icon
    Friday
    Sunny
    76°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Friday 5/24
    Day
    76°
    Sunny
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 70s.
    Night Details
    Partly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Saturday
    30% Chance Rain Showers
    72°
    Forecast night icon
    Night
    30% Chance Rain Showers
    57°
    Saturday 5/25
    Day
    72°
    30% Chance Rain Showers
    Forecast day icon
    Night
    57°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent.
    Night Details
    Partly cloudy with a 30 percent chance of showers. Lows in the mid 50s.
  • Forecast day icon
    Sunday
    40% Chance Rain Showers
    72°
    Forecast night icon
    Night
    30% Chance of Rain
    58°
    Sunday 5/26
    Day
    72°
    40% Chance Rain Showers
    Forecast day icon
    Night
    58°
    30% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 40 percent.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 58F. Dew point will be around 57F with an average humidity of 81%. Winds will be 2 mph from the E.
  • Forecast day icon
    Monday
    40% Chance of Rain
    74°
    Forecast night icon
    Night
    50% Chance of Rain
    63°
    Monday 5/27
    Day
    74°
    40% Chance of Rain
    Forecast day icon
    Night
    63°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 74F. Dew point will be around 61F with an average humidity of 77%. Winds will be 4 mph from the S.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 63F. Dew point will be around 62F with an average humidity of 86%. Winds will be 3 mph from the SE.
  • Forecast day icon
    Tuesday
    50% Chance of Rain
    75°
    Forecast night icon
    Night
    60% Chance of Rain
    64°
    Tuesday 5/28
    Day
    75°
    50% Chance of Rain
    Forecast day icon
    Night
    64°
    60% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a 45% chance for rain and thunderstorms. High temperature around 75F. Dew point will be around 64F with an average humidity of 80%. Winds will be 3 mph from the S.
    Night Details
    Partly cloudy with a 55% chance for rain and thunderstorms. Low temperature around 64F. Dew point will be around 62F with an average humidity of 85%. Winds will be 2 mph from the S.