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Mount Vernon, Illinois

  National Weather Service:
Winter Weather Advisory
    

5-day forecast
Tue Wed Thu Fri Sat
Ice Pellets Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Ice Pellets Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
36° | 29° 38° | 27° 34° | 22° 40° | 25° 31° | 16°

Current conditions
As of 9:15 PM CST
at Mount Vernon, Illinois

Clear
Temperature: 27°
Wind chill:20°
Wind: ENE 6 mph
Dewpoint: 18°
Humidity: 69%
Visibility: 10.0 miles
Forecast

As of 7:29 PM CST on January 5, 2009

Tonight...Cloudy. A chance of very light freezing rain and light snow or very light sleet in the evening...then very light freezing rain or very light sleet likely after midnight...with a chance of light snow. Rain possible late. No snow and sleet accumulation. Lows in the upper 20s. Temperature steady or slowly rising after midnight. East winds 5 to 10 mph. Chance of precipitation 70 percent.

Tuesday...Cloudy. A chance of rain or freezing rain in the morning...then a slight chance of rain in the afternoon. Highs in the upper 30s. Northeast winds 5 mph in the morning shifting to the southwest in the afternoon. Chance of precipitation 40 percent.

Tuesday Night...Cloudy. Patchy light freezing drizzle after midnight. Lows around 30. West winds 5 to 10 mph.

Radar
Local radar » Loop
Regional radar » Loop

    Regional conditions
LocationConditionsTemp..
Mount Vernon Clear 27°
Centralia Clear 27°
Salem Clear 28°
Mount Erie Clear 28°
Flora Clear 28°
Energy Mostly Cloudy 30°
Raleigh Overcast 32°
De Soto Partly Cloudy 28°
Sparta Clear 27°
Carmi Clear 28°

Almanac

Key: T = Trace of precipitation; MM = data not available
January 5, 2009
Normal high:38° Record high:60° (1998)
Normal low:23° Record low:-4° (1999)
Sunrise:7:12 AM Moon Rise: 11:48 AM
Sunset:4:49 PM Moon Set: 1:07 AM
Complete weather almanac
Detailed History and Climate

Winter Weather Advisory
Issued by the National Weather Service at 6:36 PM CST on January 5, 2009


... Winter Weather Advisory remains in effect until 6 am CST
Tuesday...

A Winter Weather Advisory remains in effect until 6 am CST
Tuesday.

Light freezing rain and sleet will develop and expand north
across the entire area tonight. While the precipitation will
remain very light... it will be falling into air that will be at
or below the freezing mark. This will result in light icing of
area roadways... mainly elevated surfaces such as bridges and
overpasses... where the pavement temperature may be below freezing
even if the air temperature is above freezing.

It will be coldest north of the Ohio River... as the above
32 degree air surges north across western Kentucky late tonight
into early Tuesday morning. By mid morning Tuesday... the
precipitation will be diminishing... and air temperatures will be
near or above freezing in most locations.

Be aware of this potentially hazardous icing problem overnight...
and make the appropriate cautionary travel plans.




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