571
ASUS43 KLOT 181010
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
500 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.
ILZ001-002-007-009-015-016-024-181100-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE TSTM 64 62 93 CALM 29.81R FOG TC 18
STERLING* CLOUDY 74 64 71 VRB7 29.78R TC 23
SAVANNA* LGT RAIN 65 63 92 NE8 29.81R TC 18
ILZ003-004-008-010-011-017-018-181100-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 73 62 68 S13 29.79R TC 23
FREEPORT* CLOUDY 69 67 93 NW12 29.82R TC 21
ROCHELLE* CLOUDY 72 60 66 S17 29.80R TC 22
DE KALB* MOCLDY 70 62 75 S18 29.82R TC 21
PERU* MOCLDY 73 63 68 S15 29.82R TC 23
ILZ005-006-012>014-019>023-181100-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 75 59 57 S16G29 29.81F TC 24
CHICAGO-MIDWAY PTCLDY 74 59 59 S20G29 29.83S TC 23
AURORA MOCLDY 70 59 68 S13 29.82R TC 21
JOLIET* MOCLDY 75 61 60 S17G23 29.84S TC 24
WAUKEGAN MOCLDY 74 60 61 S15G25 29.79S TC 23
DUPAGE AIRPORT CLOUDY 72 59 63 S16G26 29.82S TC 22
KANKAKEE* PTCLDY 72 59 64 S12G17 29.89F TC 22
WHEELING MOCLDY 75 59 57 S15G28 29.82S TC 24
MORRIS* PTCLDY 72 61 68 S13G18 29.83R TC 22
ROMEOVILLE* CLOUDY 73 61 64 S22 29.85S TC 23
LANSING* PTCLDY 72 58 61 S15G23 29.87F TC 22
NORTHERLY ISL* N/A 75 57 53 S22 N/A TC 24
LMZ740>746-181100-
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 1014.7 2/ 4
WAUKEGAN HARBOR 62 51 170/ 10/ 12 1010.3 1/ 4
HARRISON CRIB 75 200/ 27/ 30 N/A
NORTHERLY ISL 75 190/ 15/ 23 N/A
CALUMET HARBOR 74 180/ 10/ 18 1010.9F
BURNS HARBOR 73 190/ 8/ 12 1012.2S
MICHIGAN CITY 73 170/ 14/ 16 1010.2S
ST. JOSEPH BUOY 65 190/ 14/ 17 1012.9R 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181100-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 75 68 78 S9 29.80S TC 24
GALESBURG* CLOUDY 70 66 86 S8 29.81R TC 21
MACOMB* CLOUDY 76 68 78 S15G22 29.82S TC 24
JACKSONVILLE* MOCLDY 73 66 76 S12G17 29.85R TC 23
PITTSFIELD* CLOUDY 75 67 77 S14 29.84S TC 24
ILZ028>032-037-038-041>044-048-051>054-059>061-181100-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC PTCLDY 73 61 67 MISG 29.86S TC 23
BLOOMINGTON CLOUDY 72 63 73 S22 29.87S TC 22
DECATUR N/A N/A N/A N/A MISG 29.90R
PEORIA CLOUDY 73 64 73 S15G26 29.82S TC 23
LACON* MOCLDY 74 62 65 S16 29.80S TC 23
LINCOLN* CLOUDY 74 64 70 S16 29.86S TC 24
SPRINGFIELD CLOUDY 73 63 70 S20 29.86R TC 23
TAYLORVILLE PTCLDY 72 63 73 S15 29.89R TC 22
ILZ033-039-045-046-055>057-062-063-181100-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 70 60 70 S21 29.91S TC 21
DANVILLE* PTCLDY 73 60 62 S17G24 29.93S TC 23
RANTOUL* CLEAR 71 60 67 S17G24 29.91R TC 22
MATTOON CLEAR 72 60 66 S13G23 29.93S TC 22
PARIS* CLOUDY 69 59 70 S13 29.96R TC 21
ILZ079-100>102-181100-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 75 66 73 S13 29.88S TC 24
BELLEVILLE PTCLDY 75 68 80 S14 29.88F TC 24
CAHOKIA* PTCLDY 76 67 73 S9 29.87F TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181100-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 76 65 68 S14 29.95R TC 24
CAIRO* PTCLDY 78 67 68 S10G16 29.98S HX 80 TC 26
EFFINGHAM* CLEAR 70 61 73 SE9 29.96S TC 21
MARION CLEAR 74 62 67 S12 29.97S TC 23
MT. VERNON PTCLDY 74 62 66 S10 29.96R TC 23
CENTRALIA* PTCLDY 73 63 69 S9 29.94R TC 23
SALEM* PTCLDY 72 63 72 SE5 29.94S TC 22
METROPOLIS* PTCLDY 75 63 66 S8 29.99S TC 24
ILZ067-068-072-073-078-083-087-091-181100-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOCLDY 69 63 81 S8 29.98S TC 21
FLORA* CLEAR 70 61 73 S10 29.97R TC 21
FAIRFIELD* PTCLDY 71 60 66 S7 29.97S TC 22
HARRISBURG* PTCLDY 75 64 66 S8 29.98S TC 24
ROBINSON* MOCLDY 72 63 73 S9 29.96F TC 22
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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