547
ASUS43 KLOT 200510
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1200 AM CDT THU AUG 20 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.
ILZ001-002-007-009-015-016-024-200600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 69 67 93 CALM 29.95R TC 21
STERLING* MOCLDY 68 67 96 E7 29.99R TC 20
SAVANNA* MOCLDY 68 64 85 NE5 29.98R TC 20
ILZ003-004-008-010-011-017-018-200600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 67 60 78 NE3 30.00R TC 19
FREEPORT* MOCLDY 65 64 96 E3 30.01R TC 18
ROCHELLE* MOCLDY 66 63 90 NE6 29.99R TC 19
DE KALB* MOCLDY 63 63 99 N6 30.00R TC 17
PERU* CLOUDY 70 66 88 NE5 29.98R TC 21
ILZ005-006-012>014-019>023-200600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 71 55 56 NE8 29.97R TC 22
CHICAGO-MIDWAY CLOUDY 72 55 55 NE10 29.97R TC 22
AURORA CLOUDY 66 62 87 NE6 29.97R TC 19
JOLIET* CLOUDY 71 62 74 NE5 29.97R TC 22
WAUKEGAN MOCLDY 62 59 90 CALM 29.99R TC 17
DUPAGE AIRPORT MOCLDY 65 60 84 N5 29.98R TC 18
KANKAKEE* CLOUDY 69 67 94 NE7 29.96R TC 21
WHEELING MOCLDY 69 56 62 CALM 30.00R TC 21
ROMEOVILLE* CLOUDY 70 61 73 NE9 29.98R TC 21
LANSING* CLOUDY 70 57 63 NE6 29.97R TC 21
NORTHERLY ISL* N/A 72 55 55 N8 N/A TC 22
LMZ740>746-200600-
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 73 74 30/ 8/ 12 1015.2 2/ 3
WAUKEGAN HARBOR 73 74 10/ 10/ 14 1016.0 2/ 3
WILMETTE BUOY 74 90/ 14/ 17 1017.8R 2/ 4
CHICAGO BUOY 74 73 1013.8 3/ 4
NORTHERLY ISL 72 30/ 8/ 14 N/A
CALUMET HARBOR 73 20/ 11/ 14 1014.6F
MICH CITY BUOY 74 74 30/ 14/ 17 N/A 3/ 4
ST. JOSEPH BUOY 72 74 20/ 12/ 16 1015.5R 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-200600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY MOCLDY 68 66 93 E5 29.95F TC 20
GALESBURG* MOCLDY 68 68 100 CALM 29.97R TC 20
MACOMB* MOCLDY 66 66 100 N3 29.98R TC 19
JACKSONVILLE* MOCLDY 69 69 100 SE3 29.93F TC 20
ILZ028>032-037-038-041>044-048-051>054-059>061-200600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 69 69 99 E3 29.96R TC 21
BLOOMINGTON MOCLDY 68 68 100 CALM 29.97R TC 20
DECATUR MOCLDY 68 67 96 NE3 29.94S TC 20
PEORIA CLOUDY 69 68 96 NE3 29.95R TC 21
LACON* CLOUDY 69 67 94 CALM 29.96R FOG TC 21
LINCOLN* MOCLDY 69 69 100 CALM 29.96R TC 20
SPRINGFIELD LGT RAIN 69 67 93 E5 29.93R TC 21
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-200600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 67 66 97 E8 29.92F TC 19
RANTOUL* MOCLDY 67 67 99 CALM 29.93F TC 20
MATTOON CLOUDY 69 67 93 N9 29.94 TC 21
PARIS* TSTM 68 67 98 N8G24 29.97R VSB 1/2 TC 20
ILZ079-100>102-200600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY N/A N/A N/A CALM 29.93S
BELLEVILLE MOCLDY 74 74 97 CALM 29.89F TC 24
CAHOKIA* MOCLDY 74 72 93 N3 29.91S TC 23
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-200600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
CAIRO* N/A 70 69 99 E14 29.91F TC 21
EFFINGHAM* CLOUDY 73 73 100 CALM 29.95S TC 23
MARION CLOUDY 74 74 98 S6 29.92F TC 24
MT. VERNON MOCLDY 72 72 100 CALM 29.93S TC 22
CENTRALIA* MOCLDY 73 72 98 CALM 29.92F TC 23
SALEM* PTCLDY 73 73 100 MISG 29.91F TC 23
METROPOLIS* HVY RAIN 75 74 98 S6 29.98R TC 24
ILZ067-068-072-073-078-083-087-091-200600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 73 71 93 CALM 29.92F TC 23
FLORA* MOCLDY 72 N/A N/A CALM 29.92F TC 22
FAIRFIELD* MOCLDY 71 70 97 CALM 29.92F TC 22
HARRISBURG* MOCLDY 73 73 99 CALM 29.91S TC 23
ROBINSON* CLOUDY 73 73 100 SW2 29.91F TC 23
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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