• Saturday

    Sep 20

    77°Lo 58°

    Heavy thunderstorms

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Sunday

    Sep 21

    67°Lo 48°

    Not as warm with a shower

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
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Top Story

Lake Forest Weather Report

Chicago: Thunderstorms to Precede More Cool Air

September 19, 2014; 4:58 PM ET

Chicago is facing the threat of some disruptive thunderstorms on Saturday. more >

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