Port Byron, Illinois | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Tuesday
    70% Chance of Storms
    63°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Tuesday 5/14
    Day
    63°
    70% Chance of Storms
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Cloudy. Showers likely late this morning then scattered showers and thunderstorms this afternoon. Not as warm. Near steady temperature in the lower 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.
    Night Details
    Partly cloudy in the evening then clearing. Lows around 50. Northeast winds 10 to 15 mph with gusts up to 25 mph.
  • Forecast day icon
    Wednesday
    Sunny
    73°
    Forecast night icon
    Night
    Partly Cloudy
    58°
    Wednesday 5/15
    Day
    73°
    Sunny
    Forecast day icon
    Night
    58°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny warmer with highs in the mid 70s. Northeast winds 5 to 10 mph.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. East winds 5 to 10 mph.
  • Forecast day icon
    Thursday
    70% Chance of Storms
    72°
    Forecast night icon
    Night
    50% Chance of Storms
    60°
    Thursday 5/16
    Day
    72°
    70% Chance of Storms
    Forecast day icon
    Night
    60°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. A chance of showers in the morning then showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 70s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.
    Night Details
    A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the upper 50s. Chance of rain 50 percent.
  • Forecast day icon
    Friday
    40% Chance Rain Showers
    80°
    Forecast night icon
    Night
    Partly Cloudy
    60°
    Friday 5/17
    Day
    80°
    40% Chance Rain Showers
    Forecast day icon
    Night
    60°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a chance of showers. Highs in the upper 70s. Chance of rain 40 percent.
    Night Details
    Partly cloudy in the evening then becoming mostly clear. Lows in the upper 50s.
  • Forecast day icon
    Saturday
    Mostly Sunny
    85°
    Forecast night icon
    Night
    Mostly Clear
    67°
    Saturday 5/18
    Day
    85°
    Mostly Sunny
    Forecast day icon
    Night
    67°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly clear. Highs in the lower 80s. Lows in the lower 60s.
    Night Details
    Mostly clear. Highs in the lower 80s. Lows in the lower 60s.
  • Forecast day icon
    Sunday
    30% Chance Rain Showers
    81°
    Forecast night icon
    Night
    30% Chance Rain Showers
    61°
    Sunday 5/19
    Day
    81°
    30% Chance Rain Showers
    Forecast day icon
    Night
    61°
    30% Chance Rain Showers
    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
    Mostly clear. A chance of showers after midnight. Lows in the upper 50s. Chance of rain 30 percent.
  • Forecast day icon
    Monday
    30% Chance Rain Showers
    83°
    Forecast night icon
    Night
    40% Chance of Rain
    66°
    Monday 5/20
    Day
    83°
    30% Chance Rain Showers
    Forecast day icon
    Night
    66°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a 30 percent chance of showers. Highs in the upper 70s.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 66F. Dew point will be around 55F with an average humidity of 56%. Winds will be 7 mph from the SE.
  • Forecast day icon
    Tuesday
    50% Chance of Rain
    80°
    Forecast night icon
    Night
    50% Chance of Rain
    64°
    Tuesday 5/21
    Day
    80°
    50% Chance of Rain
    Forecast day icon
    Night
    64°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a 45% chance for rain and thunderstorms. High temperature around 80F. Dew point will be around 59F with an average humidity of 60%. Winds will be 5 mph from the SW.
    Night Details
    Mostly clear with a 50% chance for rain and thunderstorms. Low temperature around 64F. Dew point will be around 58F with an average humidity of 64%. Winds will be 3 mph from the S.
  • Forecast day icon
    Wednesday
    30% Chance of Rain
    77°
    Forecast night icon
    Night
    30% Chance of Rain
    60°
    Wednesday 5/22
    Day
    77°
    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 25%. High temperature around 77F. Dew point will be around 56F with an average humidity of 59%. Winds will be 7 mph from the W.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 60F. Dew point will be around 53F with an average humidity of 60%. Winds will be 3 mph from the NW.
  • Forecast day icon
    Thursday
    Sunny
    75°
    Forecast night icon
    Night
    30% Chance of Rain
    60°
    Thursday 5/23
    Day
    75°
    Sunny
    Forecast day icon
    Night
    60°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny. High temperature around 75F. Dew point will be around 54F with an average humidity of 59%. Winds will be 4 mph from the W.
    Night Details
    Mostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 60F. Dew point will be around 53F with an average humidity of 60%. Winds will be 2 mph from the SE.