487
ASUS43 KLOT 180401
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 PM CDT SUN MAY 17 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.
ILZ001-002-007-009-015-016-024-180500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 77 64 64 S12 29.77R TC 25
STERLING* CLEAR 76 64 66 SE5 29.81R TC 24
SAVANNA* PTCLDY 76 63 63 S7 29.79R TC 25
ILZ003-004-008-010-011-017-018-180500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD MOCLDY 77 64 64 S10 29.83R TC 25
FREEPORT* MOCLDY 74 67 79 S6 29.82R TC 23
DE KALB* PTCLDY 74 64 71 S16 29.84R TC 23
PERU* CLEAR 77 63 61 S14G21 29.81R TC 25
ILZ005-006-012>014-019>023-180500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTCLDY 78 61 55 S13G26 29.82R HX 80 TC 26
CHICAGO-MIDWAY PTCLDY 78 61 55 S15G28 29.83S HX 80 TC 26
AURORA CLEAR 77 62 59 S16G26 29.83R TC 25
JOLIET* MOCLDY 79 63 57 S12G21 29.85R HX 80 TC 26
WAUKEGAN PTCLDY 57 53 86 E3 29.83R TC 14
DUPAGE AIRPORT PTCLDY 78 62 57 S21G31 29.82R HX 80 TC 26
KANKAKEE* MOCLDY 75 57 53 S14G21 29.89R TC 24
WHEELING PTCLDY 78 61 55 S16G25 29.83R HX 80 TC 26
MORRIS* PTCLDY 77 63 61 S17G23 29.83R TC 25
LANSING* PTCLDY 74 58 58 S13 29.87S TC 23
NORTHERLY ISL* N/A 78 58 49 S14 N/A TC 26
LMZ740>746-180500-
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 47 1006.9R 1/ 4
WAUKEGAN HARBOR 52 51 340/ 8/ 10 1011.0R 2/ 4
HARRISON CRIB 74 180/ 24/ 26 N/A
NORTHERLY ISL 78 180/ 12/ 22 N/A
CALUMET HARBOR 78 160/ 15/ 21 1010.6F
BURNS HARBOR 77 180/ 8/ 12 1011.9S
MICHIGAN CITY 77 170/ 13/ 16 1009.8F
ST. JOSEPH BUOY 63 160/ 8/ 10 1012.7F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-180500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 76 65 68 S10G18 29.80R TC 24
GALESBURG* CLEAR 76 63 64 S10G17 29.81R TC 24
MACOMB* CLEAR 77 66 68 S15G21 29.82R TC 25
JACKSONVILLE* CLEAR 77 64 65 S12G18 29.82R TC 25
ILZ028>032-037-038-041>044-048-051>054-059>061-180500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON CLEAR 74 63 68 S22 29.86S TC 23
DECATUR N/A N/A N/A N/A MISG 29.88S
PEORIA CLEAR 77 63 61 S13 29.82R TC 25
SPRINGFIELD CLEAR 75 64 68 S14 29.84R TC 24
TAYLORVILLE CLEAR 73 63 68 S13 29.87R TC 23
ILZ033-039-045-046-055>057-062-063-180500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 71 58 63 S13 29.90S TC 22
DANVILLE* CLEAR 73 58 60 S13 29.93S TC 23
MATTOON CLEAR 73 57 57 S10 29.90F TC 23
PARIS* CLEAR 72 57 60 S12 29.94S TC 22
ILZ079-100>102-180500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 77 64 63 SE10G16 29.87R TC 25
BELLEVILLE CLEAR 76 65 68 S13 29.86S TC 24
CAHOKIA* CLEAR 77 64 64 S8 29.86S TC 25
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 76 58 53 S12 29.93S TC 24
CAIRO* CLEAR 78 60 54 S9 29.96S TC 26
EFFINGHAM* CLEAR 73 58 58 SE9 29.93F TC 23
MARION CLEAR 76 56 50 S9 29.95F TC 24
MT. VERNON CLEAR 77 58 51 S12 29.93F TC 25
CENTRALIA* CLEAR 76 57 52 S12G17 29.91F TC 25
SALEM* CLEAR 77 59 53 S10 29.91F TC 25
ILZ067-068-072-073-078-083-087-091-180500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 70 62 76 S9 29.96S TC 21
FLORA* CLEAR 72 61 68 S9 29.93F TC 22
FAIRFIELD* CLEAR 75 60 58 S9 29.94F TC 24
HARRISBURG* CLEAR 69 61 76 S6 29.96F TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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