Arlington Heights Weather Forecast: Rainy, Cold Upper 30s; Thundershowers, Rising Temps Overnight; High 48 Friday

Chicagoland weather radar shows rain and thundershowers moving across much of northern Illinois. Lightning and thunder is occurring across northeast Illinois and east central Illinois -- radar image shows precipitation moving east northeast.

Precipitation is expected to diminish by 1:00 p.m. and start up again after 7:00 p.m. tonight with thunderstorms or thundershowers. About 0.75 inch of rainfall is possible from Thursday morning through about 7:00 p.m. Friday.

Satellite images show all of Illinois is under clouds. clouds are not expected to decrease until after 7:00 p.m. Friday.

TODAY Sunrise: 6:31 AM Sunset: 7:19 PM
Showers and thundershowers likely, mainly before 1pm. Cloudy, cold in upper 30s with a high during daylight near 40 degrees at 7:00 p.m. then temperatures rise overnight. Breezy, with an east wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Tonight Showers and possibly a thunderstorm before 4am, then showers likely. Temperature rising to around 44 by 4am. East wind 10 to 15 mph becoming south southeast after midnight and southwest at about 5:00 a.m. Winds could gust as high as 25 mph, and then pick up about 6:00 am. Friday -- increasing gusts from 29 to 40 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Friday Showers likely, mainly before 7am. Cloudy, with a high near 48. Breezy, with a southwest wind 15 to 25 mph, with gusts as high as 40 mph between 6:00 a.m. Friday and 11:00 a.m. Saturday. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Friday Night A slight chance of rain and snow showers before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 30. Breezy, with a west northwest wind 15 to 25 mph, with gusts as high as 40 mph, but diminishing gradually after 5:00 pm. Northwest winds are forecast to gust as high as 30 mph as late as 3:00 a.m. Saturday. Chance of precipitation is 20%.

Saturday Sunny, with a high near 48. West northwest wind 5 to 15 mph, with gusts as high as 20 mph.

Saturday Night Mostly clear, with a low around 33.

Sunday Mostly sunny, with a high near 53.

Sunday Night Partly cloudy, with a low around 36.

Monday A chance of rain. Mostly cloudy, with a high near 43.

Monday Night A chance of rain. Mostly cloudy, with a low around 35.

Tuesday A slight chance of rain. Partly sunny, with a high near 49.

Tuesday Night Mostly cloudy, with a low around 32.

Wednesday Mostly sunny, with a high near 52.


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