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Current Conditions

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Crystal Lake IL

7 Day Forecast

For More Weather Information:

Chicago, IL Local Forecast Office

Tonight

Patchy Fog

Patchy
Fog

Low: 40 °F

Tuesday

Patchy Fog

Patchy
Fog

High: 64 °F

Tuesday
Night

Patchy Fog

Patchy
Fog

Low: 44 °F

Wednesday

Patchy Fog

Patchy
Fog

High: 68 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 48 °F

Thursday

Mostly Sunny

Mostly
Sunny

High: 66 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 51 °F

Friday

Slight Chance Thunderstorms

Slight Chc
Thunderstorms

High: 71 °F

Friday
Night

Chance Thunderstorms

Chance
Thunderstorms

Low: 60 °F

Detailed Forecast

  • Tonight Patchy fog after 2am. Otherwise, mostly clear, with a low around 40. Northwest wind 5 to 10 mph.
  • Tuesday Patchy fog before 8am. Otherwise, sunny, with a high near 64. West northwest wind around 5 mph.
  • Tuesday Night Patchy fog after 2am. Otherwise, clear, with a low around 44. West southwest wind around 5 mph.
  • Wednesday Patchy fog before 8am. Otherwise, sunny, with a high near 68. West wind around 5 mph.
  • Wednesday Night Partly cloudy, with a low around 48. West wind around 5 mph becoming calm.
  • Thursday Mostly sunny, with a high near 66.
  • Thursday Night Partly cloudy, with a low around 51.
  • Friday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 71.
  • Friday Night A chance of showers and thunderstorms. Partly cloudy, with a low around 60.
  • Saturday A chance of showers and thunderstorms. Partly sunny, with a high near 76.
  • Saturday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
  • Sunday A chance of showers and thunderstorms. Mostly sunny, with a high near 73.
  • Sunday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 52.
  • Monday Sunny, with a high near 67.