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Grand Detour, IL
 18° 
Last Updated on Feb 17 2018, 11:56 pm CST
Current ConditionsFog/Mist
Relative Humidity88%
WindSouthwest at 4.6 MPH
(4 KT)
Pressure30.19 mb
Dewpoint15.1 F (-9.4 C)
Wind Chill11 F (-12 C)
Visibility6.00 miles

7-Day Forecast

Overnight
Areas Dense Freezing Fog
Low: 19°
Areas of dense freezing fog after 3am.
Partly cloudy with a low around 19.
Southwest wind around 5 mph becoming
south southeast.


Sunday
Areas Dense Freezing Fog then Mostly Sunny and Breezy
High: 43°
Areas of dense freezing fog before 9am.
Mostly sunny with a high near 43.
Breezy with a south wind 5 to 10 mph increasing
to 15 to 20 mph in the afternoon.
Winds could gust as high as 30 mph.


Sunday Night
Mostly Cloudy and Breezy then Chance Showers
Low: 36°
A 40% chance of showers after midnight.
Increasing clouds with a low around 36.
Breezy with a south wind 10 to 20 mph
with gusts as high as 30 mph.


Washington's Birthday
Showers
High: 55°
Showers and possibly a thunderstorm.
High near 55.
South southeast wind 5 to 10 mph
with gusts as high as 15 mph.
Chance of precipitation is 80%.


Monday Night
Showers
Low: 43°
Showers and possibly a thunderstorm.
Low around 43.
South wind 5 to 10 mph
with gusts as high as 15 mph.
Chance of precipitation is 90%.


Tuesday
Showers
High: 50°
Showers and possibly a thunderstorm.
High near 50.
Chance of precipitation is 90%.


Tuesday Night
Chance Wintry Mix
Low: 22°
A chance of rain, freezing rain, and sleet before 1am,
then a slight chance of sleet
between 1am and 3am,
then a slight chance of snow and sleet after 3am.
Mostly cloudy with a low around 22.
Chance of precipitation is 40%.


Wednesday
Partly Sunny
High: 32°
Partly sunny with a high near 32.


Wednesday Night
Partly Cloudy
Low: 19°
Partly cloudy with a low around 19.


Thursday
Sunny
High: 38°
Sunny with a high near 38.


Thursday Night
Mostly Cloudy
Low: 25°
Mostly cloudy with a low around 25.


Friday
Chance Rain/Snow then Chance Rain
High: 41°
A chance of rain and snow.
Mostly cloudy with a high near 41.


Friday Night
Chance Rain/Snow
Low: 30°
A chance of rain and snow.
Mostly cloudy with a low around 30.


Saturday
Partly Sunny then Slight Chance Rain
High: 43°
A slight chance of rain.
Partly sunny with a high near 43.


Source: National Weather Service








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