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  5 Day Forecast for Alton, IL as of 8:50 AM CDT on May 17, 2012
Thursday

Clear
HI 81° F
LO 52° F
Friday

Clear
HI 86° F
LO 61° F
Saturday

Partly Cloudy
HI 88° F
LO 64° F
Sunday

Chance of a Thunderstorm
HI 88° F
LO 64° F
Monday

Partly Cloudy
HI 84° F
LO 57° F
  Current Weather Conditions for Alton, IL as of 8:50 AM CDT on May 17, 2012
Temperature   61° F Dew Point   37° F
Relative Humidity   42% Wind   ESE 9 mph
Heat Index  N/A Sky   Clear
Visibility   10.0 Miles Pressure   30.11 in.
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  Extended Forecast for Alton, IL 10:00 AM CDT on May 17, 2012
Thursday - Clear. High of 81F. Winds from the East at 5 to 10 mph.
Local Forecasts
Today's Highs/Lows
Seattle 68° / 45°
Traveler's Forecasts
Today's Highs/Lows
Chicago 73° / 52°
New Orleans 84° / 66°
Detroit 70° / 48°
Las Vegas 100° / 77°
Los Angeles 79° / 59°
Tampa 88° / 66°
Green Bay 70° / 54°
Dallas 88° / 66°
Reno 79° / 48°
Sacramento 81° / 52°
San Diego 68° / 61°
Atlanta 86° / 61°
Washington 75° / 55°
Yosemite National Park 75° / 39°
Thursday Night - Clear. Low of 52F. Winds from the ESE at 5 to 10 mph.
Friday - Clear in the morning, then partly cloudy. High of 86F. Winds from the SE at 5 to 10 mph.
Friday Night - Clear. Low of 61F. Winds from the SSE at 5 to 10 mph.
Saturday - Clear in the morning, then partly cloudy. High of 88F. Winds from the SSE at 10 to 15 mph.
Saturday Night - Clear. Low of 64F. Winds from the South at 5 to 15 mph.
Sunday - Overcast with a chance of a thunderstorm and rain in the afternoon. High of 88F. Winds from the South at 10 to 15 mph. Chance of rain 40%.
Sunday Night - Overcast with a chance of a thunderstorm and rain in the evening, then partly cloudy with a chance of a thunderstorm and rain. Low of 64F. Winds from the SW at 5 to 10 mph shifting to the WNW after midnight. Chance of rain 50% with rainfall amounts near 0.3 in. possible.
Monday - Overcast in the morning, then partly cloudy. High of 84F. Winds from the NNW at 5 to 15 mph.
Monday Night - Partly cloudy. Low of 57F. Winds from the NNE at 5 to 10 mph.
Tuesday - Partly cloudy. High of 75F. Winds less than 5 mph.
Tuesday Night - Partly cloudy. Low of 61F. Winds less than 5 mph.
Wednesday - Partly cloudy. High of 82F. Winds from the SE at 5 to 10 mph.
Wednesday Night - Partly cloudy. Low of 66F. Winds from the SE at 5 to 10 mph.
Thursday - Partly cloudy. High of 84F. Winds from the SSE at 10 to 15 mph.
Thursday Night - Partly cloudy. Low of 68F. Winds from the South at 5 to 15 mph.
Friday - Mostly cloudy with a chance of a thunderstorm. High of 88F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Friday Night - Mostly cloudy with a chance of a thunderstorm. Low of 68F. Winds from the South at 5 to 10 mph. Chance of rain 40%.
Saturday - Mostly cloudy with a chance of a thunderstorm. High of 84F with a heat index of 97F. Winds less than 5 mph. Chance of rain 40%.
Saturday Night - Partly cloudy with a chance of a thunderstorm. Low of 68F. Winds less than 5 mph. Chance of rain 40%.
Sunday - Partly cloudy. High of 86F with a heat index of 100F. Winds less than 5 mph.
Sunday Night - Clear. Low of 68F. Winds less than 5 mph.
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