486
ASUS43 KLOT 181101
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
600 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.
ILZ001-002-007-009-015-016-024-181200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 64 63 96 CALM 29.81F TC 18
STERLING* CLOUDY 68 65 90 N7 29.82R TC 20
SAVANNA* TSTM 64 62 93 N9 29.80F TC 18
ILZ003-004-008-010-011-017-018-181200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD TSTM 70 65 84 VRB7 29.83R TC 21
FREEPORT* MOCLDY 65 64 95 CALM 29.83S TC 19
DE KALB* MOCLDY 71 63 74 S18G29 29.83S TC 22
PERU* MOCLDY 73 63 68 S15G21 29.82S TC 23
ILZ005-006-012>014-019>023-181200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 75 61 61 S18G28 29.83R TC 24
CHICAGO-MIDWAY MOCLDY 74 60 61 S17G29 29.85R TC 23
AURORA MOCLDY 71 61 70 S9 29.82S TC 22
JOLIET* CLOUDY 75 62 64 S13G18 29.85S TC 24
WAUKEGAN MOCLDY 74 61 63 SW16G29 29.81R TC 23
DUPAGE AIRPORT MOCLDY 72 61 68 S18 29.83R TC 22
KANKAKEE* MOCLDY 72 60 66 S12 29.90R TC 22
WHEELING MOCLDY 76 62 62 SW20G30 29.83R TC 24
MORRIS* MOCLDY 73 61 64 S16G24 29.83S TC 23
ROMEOVILLE* CLOUDY 75 63 64 S18G32 29.85S TC 24
LANSING* PTCLDY 72 59 64 S15G23 29.88S TC 22
NORTHERLY ISL* N/A 74 58 57 S16 N/A TC 23
LMZ740>746-181200-
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 1014.8F 2/ 3
WAUKEGAN HARBOR 65 50 190/ 10/ 14 1010.7R 2/ 3
HARRISON CRIB 73 200/ 24/ 28 N/A
NORTHERLY ISL 74 200/ 20/ 22 N/A
CALUMET HARBOR 73 190/ 10/ 15 1011.0
BURNS HARBOR 73 190/ 9/ 14 1012.5R
MICHIGAN CITY 73 160/ 13/ 18 1010.4R
ST. JOSEPH BUOY 65 180/ 14/ 16 1013.0R 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY RAIN 64 62 93 NE12 29.81F FOG TC 18
GALESBURG* DRIZZLE 65 62 91 N9 29.84S TC 18
MACOMB* LGT RAIN 66 64 93 CALM 29.85R TC 19
JACKSONVILLE* MOCLDY 74 66 77 S10G17 29.83F TC 23
ILZ028>032-037-038-041>044-048-051>054-059>061-181200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON MOCLDY 71 63 75 S18 29.87S TC 22
DECATUR N/A N/A N/A N/A MISG 29.90S
PEORIA CLOUDY 73 64 73 S20G26 29.82S TC 23
SPRINGFIELD MOCLDY 74 64 71 S20G29 29.86S TC 23
TAYLORVILLE MOCLDY 72 64 78 S15G21 29.90R TC 22
ILZ033-039-045-046-055>057-062-063-181200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 70 61 73 S18 29.92R TC 21
DANVILLE* CLEAR 73 60 65 S18 29.94S TC 23
MATTOON CLEAR 72 61 68 S14G31 29.93S TC 22
PARIS* CLEAR 72 59 64 S16 29.96S TC 22
ILZ079-100>102-181200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 75 67 75 S13 29.88S TC 24
BELLEVILLE CLEAR 75 69 80 S13 29.87F TC 24
CAHOKIA* MOCLDY 76 67 73 S9 29.87S TC 24
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 75 66 73 S15 29.94F TC 24
CAIRO* PTCLDY 77 68 72 S12G17 29.99R TC 25
EFFINGHAM* CLEAR 70 62 76 SE9 29.96S TC 21
MARION CLEAR 74 64 70 S10 29.97S TC 23
MT. VERNON PTCLDY 73 63 70 S9 29.95F TC 23
CENTRALIA* PTCLDY 73 63 72 S5 29.93S TC 23
SALEM* PTCLDY 72 64 74 SE6 29.93F TC 22
ILZ067-068-072-073-078-083-087-091-181200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 69 63 81 S10 29.99R TC 21
FLORA* CLEAR 70 61 73 S12 29.96F TC 21
FAIRFIELD* PTCLDY 72 60 67 S7 29.97S TC 22
HARRISBURG* PTCLDY 74 64 70 S8 29.99S TC 24
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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