Severe thunderstorms with a slight risk of a tornado are forecast for today. The greatest chance for severe weather is forecast between 1:00 p.m. and 8:00 p.m. Storms that occurred last night may have disrupted the development of severe weather today. Development of severe weather largely depends on decreasing cloud cover this morning and early afternoon. A line of thunderstorms that approached the area this morning rapidly dissipated with daytime heating conditions. No Watches or Warnings exist in northern Illinois, central Illinois or southern Wisconsin as of 8:45 a.m. Wednesday.
National Weather Service Forecast for Arlington Heights
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 89. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 63. West southwest wind 5 to 10 mph becoming north northwest after midnight.
Sunny, with a high near 80. North northwest wind 5 to 10 mph becoming northeast in the afternoon.
Partly cloudy, with a low around 59. East wind around 5 mph becoming calm in the evening. Winds could gust as high as 10 mph.
A 40 percent chance of showers. Mostly cloudy, with a high near 75. South wind around 5 mph becoming west in the afternoon.
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