10-Day Weather Forecast - Petersburg, IL

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  • |73°F
    70% Chance of Storms

    Tonight

    73°F

    Mostly cloudy with a chance of thunderstorms. A chance of showers late this evening then showers likely. Lows around 70. Southeast winds 5 to 10 mph. Chance of rain 70 percent.

    Hourly details
  • 82|72°F
    70% Chance of Storms

    Day

    82°F

    Showers likely. A chance of thunderstorms in the morning then thunderstorms likely in the afternoon. Humid with highs in the mid 80s. South winds around 10 mph with gusts up to 20 mph. Chance of rain 70 percent.

    Night

    72°F

    Partly cloudy with showers and thunderstorms likely in the evening then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the upper 60s. South winds 5 to 10 mph. Chance of rain 70 percent.

    Hourly details
  • 91|76°F
    30% Chance Rain Showers

    Day

    91°F

    Mostly sunny. A chance of showers in the morning. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 30 percent.

    Night

    76°F

    Mostly clear. Lows in the lower 70s. South winds 5 to 10 mph.

    Hourly details
  • 94|76°F
    Sunny

    Day

    94°F

    Sunny. Highs in the mid 90s. Heat index values up to 100.

    Night

    76°F

    Mostly clear in the evening then becoming partly cloudy. A chance of showers after midnight. Lows in the lower 70s. Chance of rain 30 percent.

    Hourly details
  • 91|67°F
    60% Chance of Storms

    Day

    91°F

    Showers likely with a chance of thunderstorms. Highs in the lower 90s. Lows in the mid 60s. Chance of rain 60 percent.

    Night

    67°F

    Showers likely with a chance of thunderstorms. Highs in the lower 90s. Lows in the mid 60s. Chance of rain 60 percent.

    Hourly details
  • 87|68°F
    Mostly Sunny

    Day

    87°F

    Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

    Night

    68°F

    Mostly clear. Highs in the upper 80s. Lows in the mid 60s.

    Hourly details
  • 86|66°F
    Mostly Sunny

    Day

    86°F

    Mostly sunny. Highs in the upper 80s.

    Night

    66°F

    Partly cloudy in the evening then becoming mostly cloudy. A chance of thunderstorms in the evening. A chance of showers. Lows in the mid 60s. Chance of rain 40 percent.

    Hourly details
  • 81|63°F
    Partly Sunny

    Day

    81°F

    Partly sunny. Highs in the mid 80s.

    Night

    63°F

    Mostly clear with a chance of rain. Chance of precipitation 45%. Low temperature around 63F. Dew point will be around 59F with an average humidity of 70%. Winds will be 1 mph from the NE.

  • 79|62°F
    40% Chance of Rain

    Day

    79°F

    Mostly sunny with a chance of rain. Chance of precipitation 35%. High temperature around 79F. Dew point will be around 59F with an average humidity of 63%. Winds will be 1 mph from the N.

    Night

    62°F

    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 62F. Dew point will be around 57F with an average humidity of 68%. Winds will be 1 mph from the NE.

  • 77|62°F
    30% Chance of Rain

    Day

    77°F

    Mostly cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 77F. Dew point will be around 58F with an average humidity of 63%. Winds will be 1 mph from the E.

    Night

    62°F

    Mostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 62F. Dew point will be around 57F with an average humidity of 69%. Winds will be 1 mph from the SE.