Mostly clear. Lows in the lower 60s. Southeast winds 5 mph.
Mostly cloudy. A chance of showers and thunderstorms in the morning...then showers and thunderstorms likely in the afternoon. Highs in the mid 80s. South winds 5 to 10 mph. Chance of precipitation 70 percent.
... Patchy dense fog still a possibility overnight...
Calm winds... relatively clear skies and cool temperatures will continue to set the stage for fog development across the quad state region overnight.
The best time period for rapid development and persistence of fog will span from 3 am CDT to 7 am CDT.
Locations across southern Illinois and the southeast Missouri Delta Region... as well as communities in and near rivers and lakes... will likely see more widespread fog development overnight. Patchy fog will likely work into parts of west Kentucky and southwest Indiana through the overnight hours.
At this time... the greatest concern for widespread fog development is across southern Illinois... especially north and east of Interstate 57 and Route 13... Onward to Interstate 64. Visibility in the fog may drop below one quarter mile at times in the aforementioned area. This area will continue to be monitored and a dense fog advisory will be issued... if warranted.
For those traveling overnight... allow extra time to reach your destination... especially if your Route takes you through fog prone areas. Keep plenty of distance between yourself and other drivers and utilize low beam headlights or fog lights on your vehicle.
As with previous mornings... the fog should quickly lift and dissipate within an hour or so after sunrise.
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