Regional Weather Roundup
Issued by NWS
Issued by NWS
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ASUS43 KLOT 210110
RWRIL
ILLINOIS REGIONAL WEATHER ROUNDUP
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
800 PM CDT THU AUG 20 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.
ILZ001-002-007-009-015-016-024-210200-
NORTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
MOLINE CLEAR 72 65 78 S5 30.04S TC 22
STERLING* CLEAR 67 61 81 E3 30.06S TC 19
SAVANNA* CLEAR 69 61 74 SE5 30.05S TC 21
$$
ILZ003-004-008-010-011-017-018-210200-
NORTH CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ROCKFORD PTCLDY 67 58 72 CALM 30.07R TC 19
FREEPORT* CLEAR 69 64 85 S5 30.08S TC 21
ROCHELLE* CLEAR 66 59 78 CALM 30.07S TC 19
DE KALB* CLEAR 70 57 63 CALM 30.08R TC 21
PERU* CLEAR 70 63 78 CALM 30.07R TC 21
$$
ILZ005-006-012>014-019>023-210200-
NORTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHICAGO-OHARE MOCLDY 72 56 57 NE8 30.05S TC 22
CHICAGO-MIDWAY PTCLDY 72 58 61 NE7 30.05S TC 22
AURORA PTCLDY 69 61 75 N6 30.06R TC 21
JOLIET* PTCLDY 73 59 62 NE5 30.06R TC 23
WAUKEGAN PTCLDY 64 61 90 N3 30.06R TC 18
DUPAGE AIRPORT NOT AVBL
KANKAKEE* CLEAR 67 60 77 NE5 30.07R TC 20
WHEELING PTCLDY 71 57 61 CALM 30.07S TC 22
LANSING* CLEAR 71 61 71 N5 30.06R TC 21
NORTHERLY ISL* N/A 70 59 68 N6 N/A TC 21
$$
LMZ740>746-210200-
SOUTHERN LAKE MICHIGAN
STATION/POSITION SKY/WX TEMP WIND PRES VSBY WAVE
AIR SEA DIR/SP/G HT/PER
(F) (DEG/KT/KT) (MB) (MI) (FT/S)
WINTHROP HARBOR 74 74 10/ 4/ 8 1017.3 1/ 4
WAUKEGAN HARBOR 74 74 340/ 6/ 8 1018.2 1/ 4
WILMETTE BUOY 74 60/ 6/ 10 1020.8F 2/ 4
CHICAGO BUOY 74 73 1016.8 2/ 3
NORTHERLY ISL 71 350/ 6/ 9 N/A
CALUMET HARBOR 72 350/ 5/ 7 1017.9R
MICH CITY BUOY 73 74 10/ 10/ 14 N/A 2/ 4
ST. JOSEPH BUOY 73 74 20/ 12/ 14 1018.2S 3/ 4
$$
ILZ025>027-034>036-040-047-049-050-058-095>099-210200-
WEST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
QUINCY CLEAR 77 67 71 E3 30.05R TC 25
GALESBURG* CLEAR 70 67 89 CALM 30.07R TC 21
MACOMB* CLEAR 73 71 94 NE5 30.08R TC 23
JACKSONVILLE* CLEAR 73 69 89 E3 30.05R TC 23
$$
ILZ028>032-037-038-041>044-048-051>054-059>061-210200-
CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
PONTIAC CLEAR 69 63 80 NW3 30.06R TC 21
BLOOMINGTON CLEAR 72 58 61 N6 30.08R TC 22
DECATUR CLEAR 71 65 81 NE6 30.05R TC 22
PEORIA CLEAR 73 61 65 CALM 30.06R TC 23
LACON* CLEAR 66 58 73 CALM 30.05S TC 19
LINCOLN* CLEAR 73 64 74 N5 30.06R TC 23
SPRINGFIELD CLEAR 73 67 81 N5 30.04S TC 23
TAYLORVILLE NOT AVBL
$$
ILZ033-039-045-046-055>057-062-063-210200-
EAST-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CHAMPAIGN CLEAR 69 64 84 N5 30.05R TC 21
RANTOUL* CLEAR 72 57 60 N5 30.06R TC 22
MATTOON CLEAR 73 67 81 N5 30.03S TC 23
PARIS* CLEAR 70 68 95 N3 30.04R TC 21
$$
ILZ079-100>102-210200-
SOUTHWEST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
ALTON CLEAR 75 70 83 NE5 30.03S TC 24
BELLEVILLE CLEAR 78 71 77 N6 29.99R HX 81 TC 26
CAHOKIA* CLEAR 78 69 73 NE5 30.01R HX 80 TC 26
$$
ILZ064>066-069>071-074>076-080>082-084>086-088>090-092>094-210200-
SOUTH-CENTRAL ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
CARBONDALE CLEAR 79 70 73 N5 29.99 HX 81 TC 26
CAIRO* CLEAR 80 75 84 CALM 29.99R HX 84 TC 27
EFFINGHAM* CLEAR 73 71 91 CALM 30.04S TC 23
MARION CLEAR 77 70 78 CALM 30.01R TC 25
MT. VERNON CLEAR 77 69 76 N3 30.01R TC 25
CENTRALIA* CLEAR 77 69 75 CALM 30.01S TC 25
SALEM* CLEAR 77 71 82 MISG 30.02R TC 25
METROPOLIS* CLEAR 78 72 81 CALM 29.99R HX 80 TC 26
$$
ILZ067-068-072-073-078-083-087-091-210200-
SOUTHEAST ILLINOIS
CITY SKY/WX TMP DP RH WIND PRES REMARKS
LAWRENCEVILLE CLEAR 75 70 84 N6 30.01R TC 24
FLORA* CLEAR 77 70 78 NE3 30.01S TC 25
FAIRFIELD* PTCLDY 76 68 75 N3 30.00S TC 25
HARRISBURG* PTCLDY 77 75 93 CALM 30.00R TC 25
ROBINSON* CLEAR 75 72 88 N6 30.01R TC 24
$$
ABBREVIATIONS USED IN REMARKS
TC - TEMPERATURE IN CELSIUS
WCI - WIND CHILL INDEX
HX - HEAT INDEX
VSB - VISIBILITY
$$