869
ASUS43 KLOT 181513
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1000 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.
ILZ001-002-007-009-015-016-024-181600-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLOUDY 67 63 87 SE14 29.75R TC 19
STERLING* MOSUNNY 66 65 96 SE10 29.78F TC 19
SAVANNA* PTSUNNY 68 62 81 SE9 29.76R TC 20
ILZ003-004-008-010-011-017-018-181600-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD LGT RAIN 70 66 87 SE9 29.82F TC 21
FREEPORT* CLOUDY 68 67 95 SE15 29.77F TC 20
ROCHELLE* RAIN 70 63 79 SW10 29.85S TC 21
DE KALB* CLOUDY 72 67 83 SW15 29.86S TC 22
PERU* RAIN 68 64 88 SE3 29.87R TC 20
ILZ005-006-012>014-019>023-181600-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 76 65 68 S13G28 29.84S TC 24
CHICAGO-MIDWAY CLOUDY 78 66 66 SW16 29.85S HX 80 TC 26
AURORA PTSUNNY 73 67 81 S7 29.83F THUNDER TC 23
JOLIET* CLOUDY 78 68 69 SW8 29.85F HX 80 TC 26
WAUKEGAN CLOUDY 76 66 71 SW20G31 29.82S TC 24
DUPAGE AIRPORT PTSUNNY 75 66 73 S12 29.84S TC 24
KANKAKEE* CLOUDY 80 66 62 SW26G33 29.89S HX 82 TC 27
WHEELING CLOUDY 76 65 68 SW16G26 29.85S TC 24
MORRIS* CLOUDY 75 66 73 SW7 29.83F TC 24
ROMEOVILLE* CLOUDY 79 68 69 S17G25 29.87S HX 81 TC 26
LANSING* CLOUDY 80 66 62 S22G28 29.88S HX 82 TC 27
NORTHERLY ISL* N/A 76 64 66 SW10 N/A TC 24
LMZ740>746-181600-
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 51 200/ 10/ 16 1010.9 2/ 4
WILMETTE BUOY 67 210/ 12/ 16 1012.4 1/ 3
CHICAGO BUOY 69 54 230/ 12/ 21 1010.0 2/ 3
HARRISON CRIB 77 210/ 20/ 24 N/A
NORTHERLY ISL 78 190/ 10/ 20 N/A
CALUMET HARBOR 78 190/ 10/ 19 1011.3
BURNS HARBOR 78 200/ 12/ 14 1012.2S
MICHIGAN CITY 79 180/ 17/ 22 1010.3F
ST. JOSEPH BUOY 65 190/ 12/ 14 1013.0S 2/ 4
ILZ025>027-034>036-040-047-049-050-058-095>099-181600-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY LGT RAIN 64 63 96 SE13 29.91 TC 18
GALESBURG* CLOUDY 64 63 94 SE14G22 29.78F TC 18
MACOMB* CLOUDY 65 64 97 SE22 29.80F TC 18
JACKSONVILLE* PTSUNNY 64 64 100 N3 29.94S TC 18
PITTSFIELD* CLOUDY 64 64 98 CALM 29.96R TC 18
ILZ028>032-037-038-041>044-048-051>054-059>061-181600-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC LGT RAIN 74 68 81 MISG 29.92R TC 23
BLOOMINGTON CLOUDY 66 66 100 NW18G26 29.95R TC 19
DECATUR PTSUNNY 75 68 78 S24G30 29.97R TC 24
PEORIA NOT AVBL
LACON* LGT RAIN 66 63 89 S3 29.88F TC 19
LINCOLN* TSTM 66 66 100 NW6G16 29.94F TC 19
SPRINGFIELD RAIN 65 63 93 NW7 29.94S TC 18
TAYLORVILLE CLOUDY 64 64 100 N13G25 29.96R THUNDER TC 18
ILZ033-039-045-046-055>057-062-063-181600-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 75 68 78 S25G37 29.92F TC 24
DANVILLE* CLOUDY 80 67 65 S18G32 29.94F HX 82 TC 27
RANTOUL* PTSUNNY 76 67 72 S21G29 29.91F TC 24
MATTOON TSTM 72 69 90 S9G21 29.94F FOG TC 22
PARIS* PTSUNNY 79 66 64 S25 29.96F HX 81 TC 26
ILZ079-100>102-181600-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON TSTM 66 64 94 N10 29.98R TC 19
BELLEVILLE PTSUNNY 78 74 85 SW10 29.92R HX 81 TC 26
CAHOKIA* TSTM 71 64 78 N18G32 29.95R TC 22
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181600-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE LGT RAIN 77 71 82 SW13G22 29.99S TC 25
CAIRO* PTSUNNY 83 70 65 SW12G21 30.02S HX 86 TC 28
EFFINGHAM* PTSUNNY 78 72 81 S13G18 29.97F HX 80 TC 25
MARION PTSUNNY 79 70 73 S14G23 30.00R HX 81 TC 26
MT. VERNON CLOUDY 78 69 73 SW13G23 29.99R THUNDER HX 80
CENTRALIA* TSTM 72 66 83 CALM 29.98R TC 22
SALEM* TSTM 78 71 80 SW13G21 29.98R HX 80 TC 26
METROPOLIS* PTSUNNY 82 69 65 S10G17 30.03S HX 85 TC 28
ILZ067-068-072-073-078-083-087-091-181600-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 82 69 64 S17G29 29.99F HX 85 TC 28
FLORA* PTSUNNY 79 70 73 S20 29.97F HX 81 TC 26
FAIRFIELD* PTSUNNY 81 67 63 S18G25 29.99S HX 83 TC 27
HARRISBURG* PTSUNNY 81 70 68 SW14G25 30.01F HX 85 TC 27
ROBINSON* MOSUNNY 82 70 65 S18 29.97F HX 86 TC 28
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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