761
ASUS43 KLOT 180806
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 AM CDT MON MAY 18 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.
ILZ001-002-007-009-015-016-024-180900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE TSTM 74 66 76 S14G26 29.73F TC 23
STERLING* MOCLDY 74 64 71 SE8 29.79F TC 23
SAVANNA* CLOUDY 73 64 73 S9 29.75F TC 23
ILZ003-004-008-010-011-017-018-180900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 73 63 70 S16G23 29.80F TC 23
FREEPORT* MOCLDY 74 67 77 S15 29.79F TC 23
ROCHELLE* PTCLDY 73 60 64 S18 29.81F TC 23
DE KALB* MOCLDY 70 62 75 S15 29.84F TC 21
PERU* PTCLDY 73 61 64 S13G20 29.83F TC 23
ILZ005-006-012>014-019>023-180900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 76 58 53 S15G22 29.83F TC 24
CHICAGO-MIDWAY PTCLDY 75 56 51 S20G28 29.84F TC 24
AURORA MOCLDY 73 60 63 S13 29.83F TC 23
JOLIET* PTCLDY 75 58 55 S12G18 29.86F TC 24
WAUKEGAN PTCLDY 75 60 59 SW16 29.81F TC 24
DUPAGE AIRPORT PTCLDY 73 59 61 S14G22 29.83F TC 23
KANKAKEE* PTCLDY 72 58 62 S9 29.90F TC 22
WHEELING PTCLDY 76 59 55 S15G26 29.84F TC 24
MORRIS* PTCLDY 72 57 60 S12 29.84F TC 22
ROMEOVILLE* PTCLDY 73 59 60 S16 29.86F TC 23
LANSING* PTCLDY 72 57 59 S12 29.88F TC 22
NORTHERLY ISL* N/A 76 54 46 S20 N/A TC 24
LMZ740>746-180900-
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 49 1010.8R 2/ 4
WAUKEGAN HARBOR 63 51 170/ 8/ 12 1010.6 1/ 3
HARRISON CRIB 76 210/ 22/ 25 N/A
NORTHERLY ISL 76 190/ 14/ 19 N/A
CALUMET HARBOR 76 180/ 9/ 15 1011.6
BURNS HARBOR 74 180/ 8/ 11 1012.9F
MICHIGAN CITY 73 160/ 10/ 13 1010.9F
ST. JOSEPH BUOY 63 180/ 10/ 12 1013.5F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-180900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY PTCLDY 75 67 76 S17G24 29.78F TC 24
GALESBURG* CLOUDY 74 64 73 S9 29.80F TC 23
MACOMB* CLOUDY 76 67 74 S14 29.82S TC 25
JACKSONVILLE* PTCLDY 74 65 72 S15 29.83F TC 23
PITTSFIELD* CLOUDY 76 66 71 S12G23 29.83S TC 25
ILZ028>032-037-038-041>044-048-051>054-059>061-180900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 71 59 65 MISG 29.86F TC 22
BLOOMINGTON CLEAR 71 60 68 S21 29.87F TC 22
DECATUR N/A N/A N/A N/A MISG 29.90F
PEORIA PTCLDY 74 62 66 S20G26 29.82F TC 23
LACON* PTCLDY 75 61 61 SW14G21 29.81S TC 24
LINCOLN* CLEAR 74 62 67 S15 29.86F TC 23
SPRINGFIELD CLEAR 74 62 66 S18G30 29.85F TC 23
TAYLORVILLE CLEAR 72 61 68 S14 29.89F TC 22
ILZ033-039-045-046-055>057-062-063-180900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 69 60 73 S14 29.92F TC 21
DANVILLE* CLEAR 72 59 65 S13G18 29.95S TC 22
RANTOUL* CLEAR 70 59 67 S15 29.91F TC 21
MATTOON CLOUDY 72 60 66 S9 29.94S TC 22
PARIS* CLEAR 68 59 73 S9 29.97S TC 20
ILZ079-100>102-180900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 75 64 69 S13 29.89S TC 24
CAHOKIA* CLEAR 75 65 70 S8 29.88F TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-180900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE MOCLDY 76 62 62 S12 29.94S TC 24
CAIRO* PTCLDY 78 64 61 S12 29.98S HX 80 TC 26
EFFINGHAM* MOCLDY 73 60 63 SE9 29.97R TC 23
MARION CLEAR 74 59 59 S13 29.97S TC 24
MT. VERNON CLEAR 73 60 63 S5 29.96S TC 23
CENTRALIA* PTCLDY 74 61 61 S10 29.94S TC 24
SALEM* CLEAR 74 62 64 S6 29.95R TC 24
METROPOLIS* CLOUDY 76 61 59 S8 29.99S TC 25
ILZ067-068-072-073-078-083-087-091-180900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE PTCLDY 68 63 84 S5 29.98S TC 20
FLORA* MOCLDY 70 61 73 S8 29.97R TC 21
FAIRFIELD* MOCLDY 73 59 61 S7 29.97S TC 23
HARRISBURG* CLEAR 76 60 59 S9 29.98S TC 24
ROBINSON* PTCLDY 70 63 78 S7 29.97S TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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