904
ASUS43 KLOT 181806
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
100 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.
ILZ001-002-007-009-015-016-024-181900-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 74 64 71 SW10G20 29.81S TC 23
6HR MIN TEMP: 64; 6HR MAX TEMP: 74; 6HR PCP: 0.18;
STERLING* CLOUDY 77 62 59 SW21G32 29.82R TC 25
SAVANNA* PTSUNNY 75 64 68 SW9 29.81F TC 24
ILZ003-004-008-010-011-017-018-181900-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 78 63 59 S18G24 29.81F HX 80 TC 26
6HR MIN TEMP: 68; 6HR MAX TEMP: 78; 6HR PCP: 0.01;
FREEPORT* PTSUNNY 77 67 70 SW14 29.83S TC 25
ROCHELLE* CLOUDY 78 61 56 SW22G28 29.81S HX 80 TC 26
DE KALB* CLOUDY 75 65 72 SW15G22 29.83R TC 24
PERU* CLOUDY 75 66 73 S16 29.83R TC 24
ILZ005-006-012>014-019>023-181900-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 73 69 87 SE6 29.81R TC 23
6HR MIN TEMP: 68; 6HR MAX TEMP: 76; 6HR PCP: 0.39;
CHICAGO-MIDWAY CLOUDY 71 68 90 SW6 29.83R TC 22
6HR MIN TEMP: 68; 6HR MAX TEMP: 78; 6HR PCP: 0.50;
AURORA CLOUDY 76 66 71 SW8G21 29.82S TC 24
6HR MIN TEMP: 67; 6HR MAX TEMP: 76; 6HR PCP: 0.86;
JOLIET* PTSUNNY 76 69 77 S7 29.84R TC 25
WAUKEGAN MOSUNNY 72 69 90 SW5 29.80R TC 22
6HR MIN TEMP: 69; 6HR MAX TEMP: 76; 6HR PCP: 0.07;
DUPAGE AIRPORT PTSUNNY 76 68 76 S6 29.82R TC 24
6HR MIN TEMP: 69; 6HR MAX TEMP: 76; 6HR PCP: 0.33;
KANKAKEE* PTSUNNY 75 62 64 SW13G23 29.87R TC 24
WHEELING PTSUNNY 72 69 90 S6 29.83R TC 22
6HR MIN TEMP: 68; 6HR MAX TEMP: 77; 6HR PCP: 0.47;
MORRIS* CLOUDY 72 66 83 S10 29.82R TC 22
ROMEOVILLE* MOSUNNY 73 70 88 SW6 29.84R TC 23
LANSING* MOSUNNY 71 67 88 SE10 29.86R TC 21
NORTHERLY ISL* N/A 64 62 93 SE1 N/A TC 18
LMZ740>746-181900-
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 1016.0R 2/ 4
WAUKEGAN HARBOR 62 51 210/ 4/ 8 1010.4R 1/ 3
WILMETTE BUOY 59 180/ 10/ 12 1011.1F 1/ 3
CHICAGO BUOY 60 55 1009.2F 1
HARRISON CRIB 65 160/ 14/ 15 N/A
NORTHERLY ISL 61 100/ 6/ 32 N/A
CALUMET HARBOR 69 1010.1F
BURNS HARBOR 69 160/ 6/ 8 1012.2F
MICHIGAN CITY 66 130/ 9/ 11 1010.9R
ST. JOSEPH BUOY 59 180/ 10/ 16 1013.0R 2/ 3
ILZ025>027-034>036-040-047-049-050-058-095>099-181900-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY LGT RAIN 66 63 90 S28G40 29.85F TC 19
GALESBURG* CLOUDY 72 64 75 SW6 29.86R TC 22
MACOMB* CLOUDY 72 64 76 S22G30 29.83R TC 22
JACKSONVILLE* CLOUDY N/A N/A N/A S18G24 29.95F
PITTSFIELD* CLOUDY 65 65 98 S13 29.96F TC 19
ILZ028>032-037-038-041>044-048-051>054-059>061-181900-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 70 68 91 MISG 29.88R TC 21
BLOOMINGTON CLOUDY 69 66 90 S25G32 29.87F TC 21
DECATUR LGT RAIN 68 66 93 S8 29.96F TC 20
PEORIA NOT AVBL
LACON* CLOUDY 73 63 70 SW8 29.83S TC 23
LINCOLN* LGT RAIN 69 69 100 S14G21 29.92S TC 21
SPRINGFIELD RAIN 67 64 90 S16 29.93F TC 19
6HR MIN TEMP: 65; 6HR MAX TEMP: 77; 6HR PCP: 0.53;
TAYLORVILLE NOT AVBL
ILZ033-039-045-046-055>057-062-063-181900-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN LGT RAIN 68 66 93 SE15 29.96F TC 20
DANVILLE* CLOUDY 68 66 93 S9 29.98F TC 20
RANTOUL* PTSUNNY 68 66 93 SE21 29.94S TC 20
MATTOON TSTM 67 66 97 SE5 30.02R FOG TC 19
ILZ079-100>102-181900-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 66 64 94 CALM 30.03R THUNDER TC 19
BELLEVILLE TSTM 68 66 94 NE6 29.98 FOG TC 20
CAHOKIA* TSTM 67 66 97 N12 30.01R TC 19
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181900-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE SUNNY 81 72 74 S14G25 30.00S HX 84 TC 27
CAIRO* CLOUDY 80 72 76 S7 30.03S HX 83 TC 27
EFFINGHAM* RAIN 67 67 100 CALM 30.04R TC 20
MARION CLOUDY 79 72 78 SW12 30.01S HX 82 TC 26
MT. VERNON CLOUDY 77 72 84 S14 30.00R TC 25
CENTRALIA* CLOUDY 68 66 94 N8 30.01S THUNDER TC 20
SALEM* CLOUDY 68 67 97 N8 30.02S TC 20
METROPOLIS* CLOUDY 86 69 55 S13 30.03F HX 90 TC 30
ILZ067-068-072-073-078-083-087-091-181900-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLOUDY 74 69 85 S13 30.01R TC 23
FLORA* LGT RAIN 68 N/A N/A N8 30.02R TC 20
FAIRFIELD* PTSUNNY 79 69 71 SW12G18 30.00R HX 82 TC 26
HARRISBURG* PTSUNNY 86 70 58 S18G24 30.01S HX 90 TC 30
ROBINSON* RAIN 70 68 94 W14 30.02R VSB 1 TC 21
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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