230
ASUS43 KLOT 181410
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
900 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.
ILZ001-002-007-009-015-016-024-181500-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE LGT RAIN 65 62 90 SE22G31 29.74F TC 18
STERLING* LGT RAIN 68 63 84 W6 29.86R TC 20
SAVANNA* LGT RAIN 65 63 92 SE17 29.77F TC 18
ILZ003-004-008-010-011-017-018-181500-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 71 67 87 S5 29.84R TC 22
FREEPORT* PTSUNNY 67 66 95 S7 29.85R TC 20
ROCHELLE* PTSUNNY 74 64 69 SW15 29.86R TC 23
DE KALB* PTSUNNY 74 66 77 S15 29.85R TC 23
PERU* PTSUNNY 75 66 73 SW9 29.86R TC 24
ILZ005-006-012>014-019>023-181500-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 75 64 68 S13G23 29.84S TC 24
CHICAGO-MIDWAY PTSUNNY 78 65 63 S20G29 29.85S HX 80 TC 26
AURORA PTSUNNY 74 67 78 S14G25 29.85R TC 23
JOLIET* CLOUDY 78 67 68 SW10G16 29.87R HX 80 TC 26
WAUKEGAN PTSUNNY 76 65 68 S17G26 29.82F TC 24
DUPAGE AIRPORT PTSUNNY 74 65 73 S13G22 29.84S TC 23
KANKAKEE* CLOUDY 78 65 63 S17G25 29.89S HX 80 TC 26
WHEELING PTSUNNY 76 64 66 SW21G29 29.85F TC 24
MORRIS* CLOUDY 75 66 73 SW10 29.86R TC 24
ROMEOVILLE* CLOUDY 75 66 73 SW16G28 29.87R TC 24
LANSING* CLOUDY 77 65 65 SW14 29.88S TC 25
NORTHERLY ISL* N/A 77 62 59 SW18 N/A TC 25
LMZ740>746-181500-
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 1019.3 2/ 4
WAUKEGAN HARBOR 65 50 180/ 10/ 16 1011.2 1/ 4
HARRISON CRIB 75 200/ 21/ 25 N/A
NORTHERLY ISL 76 190/ 13/ 20 N/A
CALUMET HARBOR 76 170/ 13/ 19 1011.3
BURNS HARBOR 76 190/ 9/ 12 1012.2F
MICHIGAN CITY 77 180/ 18/ 22 1010.4F
ST. JOSEPH BUOY 63 180/ 10/ 12 1013.0S 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181500-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
GALESBURG* RAIN 63 63 100 E9 29.87F TC 17
MACOMB* RAIN 65 65 100 CALM 29.93S TC 18
JACKSONVILLE* CLOUDY 64 64 100 N13G25 29.93R TC 18
PITTSFIELD* CLOUDY 64 64 99 N7 29.94R TC 18
ILZ028>032-037-038-041>044-048-051>054-059>061-181500-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 78 67 68 MISG 29.87R HX 80 TC 26
BLOOMINGTON LGT RAIN 75 68 78 S25G31 29.87S TC 24
DECATUR CLOUDY 75 66 73 MISG 29.90S TC 24
PEORIA TSTM 70 66 87 W32G49 29.90R FOG TC 21
LACON* TSTM 71 66 83 W5 29.84S TC 22
LINCOLN* CLOUDY 76 69 77 S16G25 29.86S TC 25
SPRINGFIELD HVY RAIN 65 63 93 NW20G33 29.94R FOG TC 18
TAYLORVILLE CLOUDY 73 68 83 S17G23 29.90S TC 23
ILZ033-039-045-046-055>057-062-063-181500-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 76 66 71 S25G36 29.92S TC 24
DANVILLE* PTSUNNY 81 66 60 S26G36 29.94S HX 83 TC 27
RANTOUL* CLOUDY 76 66 70 S18G30 29.92R TC 25
MATTOON PTSUNNY 75 65 70 S14G30 29.96R TC 24
PARIS* PTSUNNY 80 65 60 S24G31 29.97S HX 82 TC 27
ILZ079-100>102-181500-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON PTSUNNY 77 70 78 NW18G24 29.95R THUNDER TC 25
BELLEVILLE LGT RAIN 77 73 86 SW12 29.92R TC 25
CAHOKIA* PTSUNNY 79 70 74 S12G21 29.92R HX 82 TC 26
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181500-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE PTSUNNY 79 69 71 SW14G24 29.98R HX 81 TC 26
CAIRO* CLOUDY 80 71 71 SW15G23 30.02R HX 84 TC 27
EFFINGHAM* PTSUNNY 76 68 78 S10G20 29.98S TC 24
MARION PTSUNNY 81 70 69 SW14G23 29.99R HX 84 TC 27
MT. VERNON PTSUNNY 78 69 73 S14G20 29.98S HX 80 TC 26
CENTRALIA* PTSUNNY 79 69 73 S15G21 29.96F HX 81 TC 26
SALEM* PTSUNNY 78 70 75 S13 29.96F HX 81 TC 26
METROPOLIS* MOSUNNY 81 69 67 S10G18 30.03R HX 84 TC 27
ILZ067-068-072-073-078-083-087-091-181500-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE SUNNY 80 68 66 S13 30.00S HX 83 TC 27
FLORA* MOSUNNY 79 68 69 S16 29.98F HX 81 TC 26
FAIRFIELD* MOSUNNY 80 67 64 S13G20 30.00R HX 82 TC 26
HARRISBURG* SUNNY 80 69 69 SW13G20 30.02R HX 83 TC 27
ROBINSON* MOSUNNY 79 68 69 S13G20 29.99R HX 81 TC 26
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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