Port Byron, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    80% Chance of Storms
    62°
    Monday 5/13
    Forecast night icon
    62°
    80% Chance of Storms
    Hourly
    Night Details
    Showers with thunderstorms likely late this evening then showers likely with a chance of thunderstorms. Lows in the mid 50s. East winds 5 to 10 mph. Chance of rain 80 percent.
  • Forecast day icon
    Tuesday
    70% Chance of Storms
    61°
    Forecast night icon
    Night
    Partly Cloudy
    55°
    Tuesday 5/14
    Day
    61°
    70% Chance of Storms
    Forecast day icon
    Night
    55°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    A slight chance of thunderstorms. Showers likely. Cooler with highs in the mid 60s. Northeast winds 10 to 15 mph. Chance of rain 70 percent.
    Night Details
    Partly cloudy in the evening then clearing. Lows in the upper 40s. Northeast winds 10 to 15 mph with gusts up to 25 mph.
  • Forecast day icon
    Wednesday
    Sunny
    73°
    Forecast night icon
    Night
    40% Chance Rain Showers
    60°
    Wednesday 5/15
    Day
    73°
    Sunny
    Forecast day icon
    Night
    60°
    40% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Sunny warmer with highs in the mid 70s. Northeast winds 5 to 10 mph.
    Night Details
    Mostly cloudy. A chance of showers after midnight. Lows in the mid 50s. Southeast winds around 5 mph. Chance of rain 40 percent.
  • Forecast day icon
    Thursday
    70% Chance of Storms
    72°
    Forecast night icon
    Night
    30% Chance of Storms
    58°
    Thursday 5/16
    Day
    72°
    70% Chance of Storms
    Forecast day icon
    Night
    58°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning then showers likely in the afternoon. Highs in the lower 70s. Chance of rain 70 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 30 percent.
  • Forecast day icon
    Friday
    Partly Cloudy
    80°
    Forecast night icon
    Night
    Partly Cloudy
    61°
    Friday 5/17
    Day
    80°
    Partly Cloudy
    Forecast day icon
    Night
    61°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Highs in the upper 70s. Lows in the upper 50s.
    Night Details
    Partly cloudy. Highs in the upper 70s. Lows in the upper 50s.
  • Forecast day icon
    Saturday
    Sunny
    85°
    Forecast night icon
    Night
    30% Chance Rain Showers
    63°
    Saturday 5/18
    Day
    85°
    Sunny
    Forecast day icon
    Night
    63°
    30% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 80s.
    Night Details
    Mostly clear with a chance of showers. Lows in the lower 60s. Chance of rain 30 percent.
  • Forecast day icon
    Sunday
    30% Chance Rain Showers
    82°
    Forecast night icon
    Night
    30% Chance of Storms
    64°
    Sunday 5/19
    Day
    82°
    30% Chance Rain Showers
    Forecast day icon
    Night
    64°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30 percent.
    Night Details
    Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 50s. Chance of rain 30 percent.
  • Forecast day icon
    Monday
    30% Chance Rain Showers
    80°
    Forecast night icon
    Night
    30% Chance of Rain
    65°
    Monday 5/20
    Day
    80°
    30% Chance Rain Showers
    Forecast day icon
    Night
    65°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. A chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30 percent.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 65F. Dew point will be around 57F with an average humidity of 61%. Winds will be 7 mph from the S.
  • Forecast day icon
    Tuesday
    40% Chance of Rain
    77°
    Forecast night icon
    Night
    40% Chance of Rain
    63°
    Tuesday 5/21
    Day
    77°
    40% Chance of Rain
    Forecast day icon
    Night
    63°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 77F. Dew point will be around 58F with an average humidity of 62%. Winds will be 6 mph from the SW.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 63F. Dew point will be around 56F with an average humidity of 64%. Winds will be 5 mph from the SW.
  • Forecast day icon
    Wednesday
    30% Chance of Rain
    75°
    Forecast night icon
    Night
    30% Chance of Rain
    60°
    Wednesday 5/22
    Day
    75°
    30% Chance of Rain
    Forecast day icon
    Night
    60°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 75F. Dew point will be around 56F with an average humidity of 60%. Winds will be 6 mph from the W.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 60F. Dew point will be around 54F with an average humidity of 62%. Winds will be 2 mph from the SW.