Arlington Heights Weather Forecast: Thunderstorms Approaching Should Arrive By About 10:30 AM

Chicagoland weather radar shows showers and thunderstorms approaching northwest Cook County and western Lake County at about 10:00 a.m. No active warnings or watches as of 10:00 a.m.

Satellite images show heavy clouds over northern Illinois, all of Wisconsin and eastern Iowa.

Very uncertain forecast as cold air from Lake Michigan messes with warm front air from the south. Initially a southwest wind was forecast, but wind is from the northeast.

TODAY Sunrise: 5:15 AM Sunset: 8:30 PM
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 88-92 from noon to 3:00 p.m. East wind around 5 mph becoming west northwest in the afternoon. Possibly south winds and southeast winds as well. Winds could gust as high as 15 mph.

Tonight Showers and thunderstorms likely. Mostly cloudy, with a low around 67. East northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Southeast wind 5 to 10 mph.

Thursday Night Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Southeast wind around 5 mph. Chance of precipitation is 60%.

Friday A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. Southwest wind around 5 mph.

Friday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.

Saturday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.

Saturday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

Sunday A chance of showers and thunderstorms. Mostly sunny, with a high near 82.

Sunday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.

Monday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78.

Monday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 59.

Tuesday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76.

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