Herndon, Pennsylvania | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Saturday
    Mostly Cloudy
    61°
    Forecast night icon
    Night
    Thunderstorms
    48°
    Saturday 5/11
    Day
    61°
    Mostly Cloudy
    Forecast day icon
    Night
    48°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. A slight chance of showers this afternoon. Highs in the lower 60s. South winds 5 to 10 mph. Chance of rain 20 percent.
    Night Details
    A slight chance of thunderstorms in the evening. Showers. Lows in the mid 40s. South winds 10 to 15 mph. Chance of rain 90 percent.
  • Forecast day icon
    Sunday
    80% Chance Rain Showers
    60°
    Forecast night icon
    Night
    Mostly Cloudy
    48°
    Sunday 5/12
    Day
    60°
    80% Chance Rain Showers
    Forecast day icon
    Night
    48°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Cloudy in the morning then becoming partly sunny. Showers mainly in the morning. Highs around 60. Southeast winds 5 to 10 mph. Chance of rain 80 percent.
    Night Details
    Mostly cloudy. Patchy fog after midnight. Lows in the mid 40s. Southeast winds around 5 mph.
  • Forecast day icon
    Monday
    Partly Sunny
    71°
    Forecast night icon
    Night
    30% Chance Rain Showers
    56°
    Monday 5/13
    Day
    71°
    Partly Sunny
    Forecast day icon
    Night
    56°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Patchy fog in the morning. Warmer with highs in the lower 70s. South winds 5 to 10 mph.
    Night Details
    Partly cloudy in the evening then mostly cloudy with a chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent.
  • Forecast day icon
    Tuesday
    80% Chance Rain Showers
    69°
    Forecast night icon
    Night
    80% Chance Rain Showers
    60°
    Tuesday 5/14
    Day
    69°
    80% Chance Rain Showers
    Forecast day icon
    Night
    60°
    80% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Showers likely in the morning then showers in the afternoon. Highs in the lower 70s. Chance of rain 80 percent.
    Night Details
    Showers mainly in the evening. Lows in the upper 50s. Chance of rain 80 percent.
  • Forecast day icon
    Wednesday
    50% Chance Rain Showers
    69°
    Forecast night icon
    Night
    40% Chance Rain Showers
    53°
    Wednesday 5/15
    Day
    69°
    50% Chance Rain Showers
    Forecast day icon
    Night
    53°
    40% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly sunny. A 50 percent chance of showers. Highs in the lower 70s.
    Night Details
    Partly cloudy. A chance of showers in the evening. Lows in the lower 50s. Chance of rain 40 percent.
  • Forecast day icon
    Thursday
    Sunny
    73°
    Forecast night icon
    Night
    Partly Cloudy
    54°
    Thursday 5/16
    Day
    73°
    Sunny
    Forecast day icon
    Night
    54°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 70s.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Friday
    50% Chance Rain Showers
    71°
    Forecast night icon
    Night
    60% Chance of Rain
    58°
    Friday 5/17
    Day
    71°
    50% Chance Rain Showers
    Forecast day icon
    Night
    58°
    60% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Partly sunny in the morning then becoming mostly cloudy. A 50 percent chance of showers. Highs in the lower 70s.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 58F. Dew point will be around 55F with an average humidity of 78%. Winds will be 8 mph from the S.
  • Forecast day icon
    Saturday
    50% Chance of Rain
    72°
    Forecast night icon
    Night
    30% Chance of Rain
    57°
    Saturday 5/18
    Day
    72°
    50% Chance of Rain
    Forecast day icon
    Night
    57°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of rain. Chance of precipitation 50%. High temperature around 72F. Dew point will be around 57F with an average humidity of 73%. Winds will be 4 mph from the W.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 57F. Dew point will be around 53F with an average humidity of 75%. Winds will be 3 mph from the SW.
  • Forecast day icon
    Sunday
    30% Chance of Rain
    73°
    Forecast night icon
    Night
    30% Chance of Rain
    58°
    Sunday 5/19
    Day
    73°
    30% Chance of Rain
    Forecast day icon
    Night
    58°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 73F. Dew point will be around 54F with an average humidity of 67%. Winds will be 5 mph from the W.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 58F. Dew point will be around 54F with an average humidity of 74%. Winds will be 3 mph from the SW.
  • Forecast day icon
    Monday
    40% Chance of Rain
    72°
    Forecast night icon
    Night
    30% Chance of Rain
    57°
    Monday 5/20
    Day
    72°
    40% Chance of Rain
    Forecast day icon
    Night
    57°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a chance of rain. Chance of precipitation 35%. High temperature around 72F. Dew point will be around 55F with an average humidity of 67%. Winds will be 4 mph from the W.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 57F. Dew point will be around 52F with an average humidity of 71%. Winds will be 2 mph from the S.