228
ASUS43 KLOT 181308
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 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.
ILZ001-002-007-009-015-016-024-181400-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE RAIN 65 63 93 SE3 29.86R FOG TC 18
STERLING* PTSUNNY 69 62 78 NE6 29.84R TC 21
SAVANNA* CLOUDY 65 62 87 SE7 29.83R TC 19
ILZ003-004-008-010-011-017-018-181400-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 70 66 87 CALM 29.82F TC 21
FREEPORT* PTSUNNY 66 64 95 CALM 29.84R TC 19
ROCHELLE* PTSUNNY 74 64 69 SW7 29.83R TC 23
DE KALB* PTSUNNY 73 65 76 S16 29.85S TC 23
PERU* CLOUDY 73 66 78 S6 29.84S TC 23
ILZ005-006-012>014-019>023-181400-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE LGT RAIN 76 63 64 SW10G22 29.84R TC 24
CHICAGO-MIDWAY CLOUDY 76 64 66 SW17G28 29.85S TC 24
AURORA CLOUDY 69 67 93 S8 29.85R TC 21
JOLIET* CLOUDY 75 65 69 S15G22 29.85F TC 24
WAUKEGAN CLOUDY 73 64 73 SW14G20 29.83S TC 23
DUPAGE AIRPORT LGT RAIN 72 64 76 S10G23 29.84R TC 22
KANKAKEE* PTSUNNY 76 63 64 S18G26 29.90R TC 24
WHEELING CLOUDY 75 64 68 SW12G18 29.86R TC 24
MORRIS* CLOUDY 75 63 64 S15G21 29.84R TC 24
ROMEOVILLE* PTSUNNY 75 66 73 S17G32 29.86S TC 24
LANSING* PTSUNNY 75 63 66 SW14 29.88S TC 24
NORTHERLY ISL* N/A 75 61 61 SW13 N/A TC 24
LMZ740>746-181400-
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)
ILZ025>027-034>036-040-047-049-050-058-095>099-181400-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY TSTM 64 62 93 N5 29.93R FOG TC 18
GALESBURG* HVY RAIN 64 62 91 SW10 29.94R TC 18
MACOMB* RAIN 65 65 100 CALM 29.92R TC 18
JACKSONVILLE* CLOUDY 75 68 78 S18G26 29.85R TC 24
PITTSFIELD* CLOUDY 64 64 97 N9 29.93R TC 18
ILZ028>032-037-038-041>044-048-051>054-059>061-181400-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLOUDY 76 65 69 MISG 29.86F TC 24
BLOOMINGTON PTSUNNY 75 67 76 S24G32 29.87S TC 24
DECATUR PTSUNNY 73 66 78 S21G29 29.90R TC 23
PEORIA CLOUDY 74 66 76 S12 29.84R TC 23
LACON* CLOUDY 73 65 77 SW5 29.84R TC 23
LINCOLN* CLOUDY 76 67 75 S20G26 29.86S TC 24
SPRINGFIELD CLOUDY 76 67 73 S22G37 29.85S TC 24
TAYLORVILLE CLOUDY 73 66 78 S17G23 29.90S TC 23
ILZ033-039-045-046-055>057-062-063-181400-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN PTSUNNY 77 65 66 S24 29.92S TC 25
DANVILLE* MOSUNNY 77 65 64 S20G25 29.95S TC 25
RANTOUL* PTSUNNY 76 65 67 S22G30 29.91S TC 25
MATTOON MOSUNNY 74 64 71 S16G26 29.94F TC 23
PARIS* MOSUNNY 76 63 65 S16 29.97F TC 24
ILZ079-100>102-181400-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLOUDY 75 68 78 S15G23 29.90R TC 24
CAHOKIA* MOSUNNY 77 69 76 S8 29.90R TC 25
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-181400-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE MOSUNNY 79 69 71 S15G28 29.96S HX 81 TC 26
CAIRO* MOSUNNY 80 71 73 S16 30.00S HX 83 TC 27
EFFINGHAM* MOSUNNY 73 65 77 SE10 29.98S TC 23
MARION SUNNY 79 70 73 S12 29.97F HX 81 TC 26
MT. VERNON SUNNY 77 68 73 S12 29.98R TC 25
CENTRALIA* MOSUNNY 77 67 71 CALM 29.97R TC 25
SALEM* MOSUNNY 76 67 74 S7 29.96S TC 24
METROPOLIS* MOSUNNY 78 68 70 S13 30.00S HX 80 TC 26
ILZ067-068-072-073-078-083-087-091-181400-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE MOSUNNY 76 65 68 S14 30.00R TC 24
FLORA* SUNNY 75 66 73 S14 29.98R TC 24
FAIRFIELD* SUNNY 77 64 64 S16 29.99R TC 25
HARRISBURG* SUNNY 78 67 69 S10G16 29.99S HX 80 TC 25
ROBINSON* PTSUNNY 75 66 73 S12G18 29.99R TC 24
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
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