852
ASUS43 KLOT 181908
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 PM 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.
ILZ001-002-007-009-015-016-024-182000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 75 63 66 SW14G31 29.83R TC 24
STERLING* CLOUDY 78 64 61 SW22G32 29.83R HX 80 TC 26
SAVANNA* CLOUDY 77 64 63 SW13 29.83R TC 25
ILZ003-004-008-010-011-017-018-182000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 80 62 54 SW17G30 29.83R HX 81 TC 27
FREEPORT* CLOUDY 77 65 67 SW15G24 29.84R TC 25
ROCHELLE* CLOUDY 80 60 49 SW25 29.85R HX 81 TC 27
DE KALB* PTSUNNY 77 64 62 SW22G29 29.87R TC 25
PERU* CLOUDY 75 64 69 SW15G21 29.86R TC 24
ILZ005-006-012>014-019>023-182000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE PTSUNNY 78 66 66 S13 29.83R HX 80 TC 26
CHICAGO-MIDWAY PTSUNNY 78 66 66 SW16 29.85R HX 80 TC 26
AURORA PTSUNNY 77 67 71 S15 29.85R TC 25
JOLIET* CLOUDY 77 67 71 S10 29.88R TC 25
WAUKEGAN PTSUNNY 78 68 71 S16 29.81R HX 80 TC 26
DUPAGE AIRPORT PTSUNNY 76 66 71 S12 29.84R TC 24
KANKAKEE* CLOUDY 72 65 77 S7 29.91R TC 22
WHEELING PTSUNNY 78 67 68 SW13G22 29.84R HX 80 TC 26
MORRIS* CLOUDY 73 64 73 SW15 29.88R TC 23
ROMEOVILLE* MOSUNNY 77 66 69 SW17 29.87R TC 25
LANSING* PTSUNNY 74 66 75 S14 29.88R TC 23
NORTHERLY ISL* N/A 70 68 93 S12 N/A TC 21
LMZ740>746-182000-
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 50 1016.7 1/ 3
WAUKEGAN HARBOR 57 53 140/ 10/ 14 1010.9 1/ 3
WILMETTE BUOY 59 170/ 12/ 16 1011.8R 1/ 3
CHICAGO BUOY 60 55 1009.7 1
HARRISON CRIB 67 170/ 15/ 16 N/A
NORTHERLY ISL 66 140/ 2/ 9 N/A
CALUMET HARBOR 71 150/ 11/ 15 1010.6
BURNS HARBOR 72 180/ 9/ 11 1011.9F
MICHIGAN CITY 72 170/ 12/ 15 1009.5F
ST. JOSEPH BUOY 59 160/ 8/ 8 1011.5F 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-182000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLOUDY 67 63 87 S21G30 29.82F TC 19
GALESBURG* PTSUNNY 72 64 75 SW8 29.88F TC 22
MACOMB* PTSUNNY 71 65 81 W14 29.88F TC 22
JACKSONVILLE* CLOUDY N/A N/A N/A SW14 29.93F
PITTSFIELD* CLOUDY 66 65 99 S10 29.94F TC 19
ILZ028>032-037-038-041>044-048-051>054-059>061-182000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 73 65 76 MISG 29.90R TC 23
BLOOMINGTON CLOUDY 70 65 84 SW15G22 29.89R TC 21
DECATUR LGT RAIN 68 65 90 S15 29.96S TC 20
PEORIA NOT AVBL
LACON* CLOUDY 74 62 67 SW9 29.86R TC 23
LINCOLN* LGT RAIN 69 69 99 SW13G24 29.89F TC 20
SPRINGFIELD LGT RAIN 68 64 87 S13 29.93S TC 20
TAYLORVILLE CLOUDY 66 64 94 S10 30.00F THUNDER TC 19
ILZ033-039-045-046-055>057-062-063-182000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN LGT RAIN 69 66 90 S16 29.97R TC 21
DANVILLE* CLOUDY 70 66 88 S17 29.96F TC 21
RANTOUL* PTSUNNY 68 66 93 S23G29 29.94R TC 20
MATTOON TSTM 68 67 96 S6 30.00S FOG TC 20
PARIS* RAIN 67 66 97 S9 30.02S TC 19
ILZ079-100>102-182000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON TSTM 66 64 94 N6 30.02F TC 19
BELLEVILLE TSTM 67 67 97 N6 30.00 VSB 3/8 TC 20
CAHOKIA* TSTM 67 65 93 N8 30.04 FOG TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-182000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE LGT RAIN 75 72 88 SW16G22 30.02R TC 24
CAIRO* CLOUDY 80 72 75 S5 30.03S HX 84 TC 27
EFFINGHAM* RAIN 67 67 100 SE5 30.04R TC 20
MARION PTSUNNY 73 70 88 S9G24 30.01S TC 23
MT. VERNON TSTM 75 71 87 SW12G36 29.99S FOG TC 24
CENTRALIA* TSTM 67 66 97 CALM 30.02R TC 20
SALEM* TSTM 68 68 99 E5 30.02R VSB 3/4 TC 20
METROPOLIS* PTSUNNY 85 68 56 S8 30.02F HX 89 TC 30
ILZ067-068-072-073-078-083-087-091-182000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE LGT RAIN 72 70 93 NW13 30.01R TC 22
FLORA* LGT RAIN 68 N/A N/A N12 30.02S TC 20
FAIRFIELD* CLOUDY 81 68 65 SW17G23 29.99S HX 84 TC 27
HARRISBURG* PTSUNNY 85 68 57 SW20G25 30.00S HX 88 TC 29
ROBINSON* RAIN 68 68 100 NW12 30.02S FOG TC 20
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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