Local Forecast

Crystal Lake, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Crystal Lake, IL.

Active Alerts 1 active

Hour-by-Hour  Current Observation

Sunday 2:15 PM CDTSunday 2:15 PM

°F °C
Regional Observations →
77°F

Clear

  • 82° / 75° High / Low
  • 77° Feels Like
  • 0% Chance of Rain

Wind

6 mph

ENE

UV Index

10

Very High

Humidity

67%

Dew 65°F

Sun

5:18 AM · 8:33 PM

Rise · Set

Source: BURLINGTON (KBUU). Slider scrubs the next 12 hours.

5-Day Outlook

Through Thursday

Local Radar →

Today

82° 75°

Chance of Thunderstorms

Overnight: Mostly Cloudy

Detailed forecast

Today

A chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 82. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Night

A slight chance of rain showers before 7pm. Mostly cloudy, with a low around 74. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Monday

91° 77°

Mostly Cloudy

Overnight: Mostly Clear

Detailed forecast

Monday

Mostly sunny, with a high near 91. Heat index values as high as 104. South southwest wind 10 to 20 mph, with gusts as high as 30 mph.

Night

Mostly clear, with a low around 77. Heat index values as high as 102. South southwest wind 10 to 15 mph, with gusts as high as 30 mph.

Tuesday

93° 77°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Tuesday

Sunny, with a high near 93. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

Night

Mostly clear, with a low around 77.

Wednesday

95° 77°

Mostly Sunny

Overnight: Mostly Clear

Detailed forecast

Wednesday

Sunny, with a high near 94.

Night

Mostly clear, with a low around 76.

Thursday

95° 75°

Chance of Scattered Thunderstorms

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

Thursday

A chance of showers and thunderstorms after 1pm. Sunny, with a high near 94.

Night

A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 74.

Crystal Lake, IL Weather Analysis Tools