Izaac Walton Lake, IL Weather Maps °F °C°F °C Illinois Map Options Temperatures Weather Dew Point Wind Speeds Barometric Pressure Heat Index Wind Chill Temperatures Weather Dew Point Wind Speeds Barometric Pressure Heat Index Wind Chill Humidity UTC Time: 8/20/2026, 02:09 Your Time: Izaac Walton Lake, Illinois Hour by Hour Forcast Aeronautical Observation: Automated synoptic observations via NWS Gateway. Auto-refresh in: 5:02 Izaac Walton Lake, IL Regional Weather Expires:202608200300;;022698 ASUS43 KLOT 200208 RWRIL ILLINOIS REGIONAL WEATHER ROUNDUP NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 900 PM CDT WED AUG 19 2026 NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY. * THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT REPORT WEATHER SUCH AS PRECIPITATION OR FOG. ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-200300- SOUTH-CENTRAL ILLINOIS CITY SKY/WX TMP DP RH WIND PRES REMARKS CARBONDALE NOT AVBL CAIRO* PTCLDY 75 75 99 CALM 29.92R TC 24 EFFINGHAM* MOCLDY 75 75 100 CALM 29.94R TC 24 MARION PTCLDY 75 74 99 CALM 29.93R TC 24 MT. VERNON PTCLDY 74 72 93 CALM 29.93R TC 23 CENTRALIA* PTCLDY 75 73 94 CALM 29.92S TC 24 SALEM* PTCLDY 76 73 92 MISG 29.92S TC 24 METROPOLIS* PTCLDY 74 73 98 CALM 29.93R TC 23 $$ SKY/WX - Weather TMP - Temperature DP - Dew Point RH - HumidityWIND - Wind Direction/Speed PRES - Barometric Pressure VSB - VisibilityWCI - Wind Chill Index E13G22 Wind - East Wind 13 mph/Gusts of 22 mph Illinois Weather Map Illinois Wind Speeds Map Illinois Humidity Map Illinois Barometric Pressure Map
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