Heavy Rain, Flooding, Cooler Temps in Forecast This Week

Heavy rains and flooding is in the forecast for Monday but weather officials are still not clear on which portions of the Chicago area will be hardest hit.

There will be periods of heavy rain and thunderstorms for parts of the area Monday and Monday night and a hazardous weather outlook has been issued for counties throughout the Chicago area. It appears areas south of a line from Pontiac, Ill., to Gary, Ind., will see the heaviest rain and flooding threat with a sharp cutoff in the rain somewhere northwest of that line. The hardest hit areas could see between one to three inches locally for rain but there is continued uncertainty on where the heaviest rainfall will be, according to the National Weather Service.

There is a 30 percent chance for showers and thunderstorms on Tuesday in the Chicago area and only a 20 percent chance for rain and storms on Wednesday. Thursday is expected to be mostly clear but storms could again return on Friday.

Here is a more detailed look at the forecast:

• Sunday night: Partly cloudy. Lows in the upper 60s. South winds around 5 mph.
• Monday: Mostly cloudy. Chance of showers and thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Highs in the lower 80s. Southeast winds 10 to 15 mph. Chance of precipitation 50 percent.
• Monday Night: Showers and thunderstorms likely. Some thunderstorms may produce heavy rainfall. Lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of precipitation 70 percent.
• Tuesday: Mostly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 80s. East winds 5 to 10 mph.
• Tuesday Night: Partly cloudy. Lows in the upper 60s.
• Wednesday: Partly cloudy with a 20 percent chance of showers and thunderstorms. Highs in the mid 80s.
• Wednesday Night: Partly cloudy. Lows in the upper 60s.
• Thursday And Thursday Night: Mostly clear. Highs in the mid 80s. Lows in the upper 60s.
• Friday: Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the mid 80s.
• Friday Night: Partly cloudy with a 40 percent chance of showers and thunderstorms. Lows in the upper 60s.

more info

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