10-Day Weather Forecast - Old Greenwich, CT

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  • |74°F
    Mostly Cloudy
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    Tonight

    74°F

    Mostly cloudy with a slight chance of showers thunderstorms with patchy drizzle. Patchy fog. Some thunderstorms may produce heavy rainfall. Near steady temperature in the lower 70s. South winds around 5 mph. Chance of rain 20 percent.

    Hourly details
  • Day

    80°F

    Patchy fog in the morning. Mostly cloudy with a slight chance of showers thunderstorms with patchy drizzle in the morning then partly sunny with a chance of showers and thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the morning. Some thunderstorms may produce heavy rainfall in the afternoon. Humid with highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 50 percent.

    Night

    73°F

    Showers likely with a chance of thunderstorms in the evening then showers likely with a slight chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Humid with lows in the lower 70s. South winds around 5 mph. Chance of rain 60 percent.

    Hourly details
  • Day

    79°F

    Mostly cloudy with showers likely with a slight chance of thunderstorms in the morning then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall. Humid with highs in the mid 80s. South winds around 5 mph. Chance of rain 60 percent. Heat index values in the mid 90s in the afternoon.

    Night

    73°F

    Partly cloudy with a chance of showers and thunderstorms in the evening then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Humid with lows in the lower 70s. South winds around 5 mph. Chance of rain 30 percent.

    Hourly details
  • Day

    83°F

    Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 40 percent. Heat index values in the upper 90s.

    Night

    75°F

    Mostly cloudy. A chance of showers and thunderstorms in the evening then a chance of showers after midnight. Lows in the mid 70s. Chance of rain 40 percent.

    Hourly details
  • Day

    86°F

    Partly sunny. A chance of showers in the morning then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 105.

    Night

    76°F

    Mostly cloudy with a chance of showers and thunderstorms in the evening then partly cloudy after midnight. Lows in the mid 70s. Chance of rain 50 percent.

    Hourly details
  • Day

    86°F

    Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 50 percent. Heat index values up to 100.

    Night

    74°F

    Mostly cloudy with a chance of showers and thunderstorms in the evening then partly cloudy after midnight. Lows in the lower 70s. Chance of rain 50 percent.

    Hourly details
  • Weekend Weather

  • Day

    82°F

    Mostly sunny. Highs in the mid 80s.

    Night

    72°F

    Partly cloudy. Lows around 70.

    Hourly details
  • Day

    80°F

    Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 30 percent.

    Night

    72°F

    Mostly clear with a chance of rain. Chance of precipitation 35%. Low temperature around 72F. Dew point will be around 67F with an average humidity of 82%. Winds will be 2 mph from the SE.

  • Day

    80°F

    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 80F. Dew point will be around 70F with an average humidity of 78%. Winds will be 2 mph from the W.

    Night

    72°F

    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 72F. Dew point will be around 68F with an average humidity of 81%. Winds will be 1 mph from the NW.

  • Day

    81°F

    Sunny. High temperature around 81F. Dew point will be around 69F with an average humidity of 76%. Winds will be 1 mph from the N.

    Night

    73°F

    Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 73F. Dew point will be around 68F with an average humidity of 79%. Winds will be 1 mph from the S.