Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 160903
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
400 AM CDT WED SEP 16 2026
NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.
* THESE STATIONS ARE NOT UNDER NWS QUALITY CONTROL. THEY ALSO MAY NOT
REPORT WEATHER SUCH AS PRECIPITATION OR FOG.
ILZ001-002-007-009-015-016-024-161000-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE MOCLDY 66 63 90 NE8 30.21S TC 19
STERLING* CLOUDY 65 61 87 E6 30.24R TC 18
SAVANNA* CLOUDY 64 57 79 NE7 30.24S TC 18
$$
ILZ003-004-008-010-011-017-018-161000-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD CLOUDY 64 56 75 NE3 30.26R TC 18
FREEPORT* CLOUDY 62 60 95 CALM 30.26S TC 17
DE KALB* CLOUDY 64 63 98 NE7 30.25R TC 18
$$
ILZ005-006-012>014-019>023-161000-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE CLOUDY 67 57 70 N10 30.22S TC 19
CHICAGO-MIDWAY CLOUDY 70 61 73 NE8 30.21F TC 21
AURORA MOCLDY 68 65 90 NE7 30.23R TC 20
JOLIET* MOCLDY 73 69 89 NE6 30.22R TC 23
WAUKEGAN CLOUDY 64 55 72 N9 30.23S TC 18
DUPAGE AIRPORT CLOUDY 67 57 70 NE12 30.23R TC 19
WHEELING CLOUDY 66 56 70 NE7 30.24S TC 19
LANSING* MOCLDY 71 66 87 N6 30.21S TC 21
NORTHERLY ISL* N/A 67 61 81 N9 N/A TC 19
$$
LMZ740>746-161000-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 60 54 330/ 10/ 12 1016.9F 1/ 3
WAUKEGAN HARBOR 63 60 350/ 12/ 16 1022.8R 1/ 3
WILMETTE BUOY 63 360/ 6/ 8 1025.3R 1/ 3
CHICAGO BUOY 67 66 1021.9F 1/ 2
NORTHERLY ISL 68 340/ 9/ 10 N/A
CALUMET HARBOR 68 330/ 7/ 11 1022.8
MICH CITY BUOY 67 65 30/ 6/ 8 N/A 0
ST. JOSEPH BUOY 66 62 360/ 6/ 8 1023.7R 0
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-161000-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY LGT RAIN 70 69 97 N3 30.21R TC 21
MACOMB* RAIN 68 68 100 E3 30.23F TC 20
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-161000-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
BLOOMINGTON TSTM 71 71 100 N13 30.21F TC 22
DECATUR CLOUDY 73 70 90 NE17G30 30.16 THUNDER TC 23
PEORIA RAIN 69 68 96 MISG 30.22R TC 21
SPRINGFIELD CLOUDY 72 71 97 N8 30.20R TC 22
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-161000-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLOUDY 73 71 93 E7 30.19R TC 23
MATTOON MOCLDY 73 69 87 CALM 30.16R TC 23
$$
ILZ079-100>102-161000-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAHOKIA* MOCLDY 76 72 87 CALM 30.13R TC 24
SPARTA* PTCLDY 79 71 77 S6 30.16R HX 81 TC 26
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-161000-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE NOT AVBL
EFFINGHAM* MOCLDY 76 71 83 SE5 30.18R TC 25
MT. VERNON CLEAR 75 70 84 CALM 30.16S TC 24
CENTRALIA* PTCLDY 76 70 80 S5 30.16R TC 25
SALEM* PTCLDY 81 72 74 MISG 30.16R HX 84 TC 27
$$
ILZ067-068-072-073-078-083-087-091-161000-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 75 71 87 CALM 30.17R TC 24
FAIRFIELD* CLEAR 76 70 82 CALM 30.16S TC 24
HARRISBURG* CLEAR 71 71 99 CALM 30.17R TC 22
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$