938  
ASUS43 KLOT 160806  
RWRIL  
 
ILLINOIS REGIONAL WEATHER ROUNDUP  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
300 AM CDT SUN AUG 16 2026  
 
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO  
SIGNIFICANT WEATHER AND/OR S TO VISIBILITY
.  
 
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT  
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
 
 
ILZ001-002-007-009-015-016-024-160900-  
NORTHWEST ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
MOLINE CLOUDY 73 72 96 SW3 29.98S TC 23  
STERLING* CLOUDY 72 72 100 W6 29.98F TC 22  
SAVANNA* CLOUDY 75 74 97 W3 29.98S FOG TC 24  

 
 
ILZ003-004-008-010-011-017-018-160900-  
NORTH CENTRAL ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
ROCKFORD CLOUDY 76 75 97 W5 29.97S TC 24  
FREEPORT* CLOUDY 74 73 95 NW3 29.99S TC 24  
ROCHELLE* MOCLDY 72 70 95 CALM 29.97S TC 22  
PERU* CLOUDY 73 73 100 S3 29.98S TC 23  

 
 
ILZ005-006-012>014-019>023-160900-  
NORTHEAST ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
CHICAGO-OHARE CLOUDY 73 70 90 SW10 29.94F TC 23  
CHICAGO-MIDWAY LGT RAIN 72 71 97 SW8 29.95F TC 22  
AURORA LGT RAIN 71 71 100 SW5 29.96F TC 22  
JOLIET* RAIN 73 73 100 SW3 29.97F TC 23  
WAUKEGAN CLOUDY 74 74 100 CALM 29.93F FOG TC 23  
DUPAGE AIRPORT LGT RAIN 72 71 97 SW7 29.96F TC 22  
WHEELING CLOUDY 76 72 87 W13G21 29.95F TC 24  
LANSING* N/A N/A N/A N/A MISG N/A  
NORTHERLY ISL* N/A 72 69 90 W8 N/A TC 22  

 
 
LMZ740>746-160900-  
SOUTHERN LAKE MICHIGAN  
 
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
 
AIR SEA DIR/SP/G HT/PER  
(F) (DEG/KT/KT) (MB) (MI) (FT/S)  
WINTHROP HARBOR 75 74 120/ 4/ 6 1015.7 1  
WAUKEGAN HARBOR 74 74 210/ 2/ 4 1014.2 1  
WILMETTE BUOY 76 220/ 12/ 19 1016.5F 1  
CHICAGO BUOY 74 73 1012.8 1/ 2  
HARRISON CRIB 76 230/ 19/ 21 N/A  
NORTHERLY ISL 74 260/ 8/ 16 N/A  
CALUMET HARBOR 73 230/ 5/ 7 1014.7F  
MICHIGAN CITY 75 220/ 11/ 13 1013.1F  
MICH CITY BUOY 74 74 230/ 12/ 16 N/A 2/ 3  
ST. JOSEPH BUOY 75 74 180/ 8/ 8 1015.4F 1  

 
 
ILZ025>027-034>036-040-047-049-050-058-095>099-160900-  
WEST-CENTRAL ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
QUINCY TSTM 77 76 96 N9 30.02S TC 25  
MACOMB* CLOUDY 75 75 100 CALM 30.03S TC 24  

 
 
ILZ028>032-037-038-041>044-048-051>054-059>061-160900-  
CENTRAL ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
BLOOMINGTON CLOUDY 76 32 20 CALM 30.02F TC 24  
DECATUR LGT RAIN 79 76 90 W5 30.02S HX 83 TC 26  
PEORIA CLOUDY 74 73 97 CALM 30.00F TC 23  
LACON* CLOUDY 73 71 93 CALM 29.98S TC 23  
LINCOLN* LGT RAIN 79 79 100 CALM 30.01S HX 83 TC 26  
SPRINGFIELD MOCLDY 78 77 96 CALM 29.99F HX 81 TC 26  
TAYLORVILLE NOT AVBL  

 
 
ILZ033-039-045-046-055>057-062-063-160900-  
EAST-CENTRAL ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
CHAMPAIGN MOCLDY 76 76 100 SW5 30.01F TC 24  
RANTOUL* CLOUDY 75 74 99 CALM 30.01S FOG TC 24  
MATTOON MOCLDY 79 75 87 S7 30.01F HX 83 TC 26  

 
 
ILZ079-100>102-160900-  
SOUTHWEST ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
ALTON MOCLDY 79 77 93 CALM 30.01F HX 83 TC 26  
BELLEVILLE MOCLDY 79 78 96 S5 29.99F HX 82 TC 26  
CAHOKIA* MOCLDY 79 75 87 CALM 30.00F HX 83 TC 26  

 
 
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-160900-  
SOUTH-CENTRAL ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
CARBONDALE NOT AVBL  
CAIRO* CLEAR 79 73 81 CALM 30.06F HX 82 TC 26  
EFFINGHAM* MOCLDY 78 78 99 S3 30.03F HX 80 TC 26  
MARION PTCLDY 81 70 70 SW5 30.05S HX 84 TC 27  
MT. VERNON PTCLDY 79 74 84 SW5 30.03F HX 82 TC 26  
CENTRALIA* MOCLDY 78 75 92 CALM 30.03S HX 80 TC 26  
SALEM* N/A 80 75 85 MISG 30.03S HX 85 TC 27  

 
 
ILZ067-068-072-073-078-083-087-091-160900-  
SOUTHEAST ILLINOIS  
 
CITY SKY/WX TMP DP RH WIND PRES REMARKS
 
LAWRENCEVILLE MOCLDY 79 75 87 CALM 30.03S HX 83 TC 26  
FAIRFIELD* PTCLDY 78 73 85 CALM 30.03F TC 25  
HARRISBURG* PTCLDY 77 73 85 CALM 30.04F TC 25  
ROBINSON* PTCLDY 79 75 89 SW6 30.01F FOG HX 82  

 
 
ABBREVIATIONS USED IN REMARKS  
TC - TEMPERATURE IN CELSIUS  
WCI - WIND CHILL INDEX  
HX - HEAT INDEX  
VSB - VISIBILITY  

 
 
 
 
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