Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >
| Preliminary data based on the Real-Time Mesoscale Analysis (RTMA)  |
Observed data reported by NWS, FAA and cooperative weather observers
925 AM CDT Wed Sep 16 2026
Automated and Cooperative Observer Reports
Values represent high and low temperatures
for the 24-hour period ending around 7 am.
Location High Low
...NORTHERN ILLINOIS...
Aurora 83 64
Aurora/Sugar Grove Arpt 83 62
Barrington 79 61
Batavia 85 65
Chicago Midway Arpt 85 68
Chicago O'Hare Arpt 84 65
Coal City 4NNW 91 66
DeKalb Municipal Arpt 83 62
DeKalb Northern IL Univ 82 63
Elgin 83 63
Elizabeth 74 60
Freeport 77 60
Freeport/Albertus Arpt 78 61
Gladstone L&D 18 66
Greater Kankakee Arpt 94 65
Illinois City L&D 16 79 60
Joliet Rgl Arpt 89 65
Kankakee 93 68
Kewanee 84 65
Lansing Municipal Arpt 90 64
Lisle Morton Arboretum 84 64
Marseilles 85 63
Moline/Quad Cities Arpt 83 65
Morris 88 66
Mount Carroll 78 63
New Boston L&D 17 66
Ottawa 84 64
Park Forest 89 65
Paw Paw 84 62
Peru/IL Valley Rgl Arpt 84 66
Rochelle Municipal Arpt 82 62
Rockford Arpt 76 65
Romeoville/NWS Chicago 86 65
Savanna/Tri-Township Arpt 78 63
Schaumburg Rgl Arpt 84 65
Sterling/Rock Falls Arpt 83 64
Stockton 73 60
Waukegan Rgl Arpt 79 62
West Chicago/DuPage Arpt 83 63
Wheeling/Chicago Exec Arpt 83 64
...CENTRAL ILLINOIS...
Aledo 83 64
Avon 89 65
Bentley 93 66
Bloomington/Cntrl IL Rgl Arpt 96 66
Champaign 3S 97 69
Champaign/Willard Arpt 97 60
Coles County Arpt 97 66
Decatur Arpt 99 67
Edgar County Arpt 98 62
Galesburg Municipal Arpt 88 65
Galesburg Water Plant 86 56
Jacksonville Municipal Arpt 97 69
Jerseyville 2 SW 99 73
Knoxville 88 66
La Harpe 88 64
Lacon/Marshall Co Arpt 88 66
Lincoln NWS 97 65
Macomb Municipal Arpt 92 67
Monmouth 4NW 87 65
Morrisonville 76
Normal 4NE 99 65
Ogden 98 63
Pana 94 69
Paris 97 66
Peoria Intl Arpt 91 68
Pittsfield/Penstone Arpt 96 70
Pontiac Municipal Arpt 81 67
Quincy L&D 21 88 60
Quincy Rgl Arpt 94 69
Rantoul Aviation Center 97 62
Shelbyville Dam 100 68
Sidell 4N 97 65
Springfield/Capital Arpt 99 71
Tuscola 95 67
Windsor 97 66
...SOUTHERN ILLINOIS...
Anna 94 66
Cahokia/Parks Arpt 100 69
Carbondale 95 71
Casey 103 65
Crawford County Arpt 99 61
Effingham Co Arpt 98 66
Fairfield 98 69
Fairfield Municipal Arpt 98 66
Harrisburg Arpt 95 66
Lawrenceville 2WSW 96 70
Lawrenceville/Vincennes Arpt 97 65
Millstadt 97 69
Mt Carmel Municipal Arpt 100 64
Olney/Noble Arpt 100 66
Salem 99 67
Salem/Leckrone Arpt 101 69
Smithland Dam 96 72
Sparta Community Arpt 98 68
$$
|
|
Preliminary data based on the Real-Time Mesoscale Analysis
|
Observed data from NWS, FAA, and cooperative weather observers
925 AM CDT Wed Sep 16 2026
Automated and Cooperative Observer Reports
Values represent high and low temperatures
for the 24-hour period ending around 7 am.
Location High Low
...NORTHERN ILLINOIS...
Aurora 83 64
Aurora/Sugar Grove Arpt 83 62
Barrington 79 61
Batavia 85 65
Chicago Midway Arpt 85 68
Chicago O'Hare Arpt 84 65
Coal City 4NNW 91 66
DeKalb Municipal Arpt 83 62
DeKalb Northern IL Univ 82 63
Elgin 83 63
Elizabeth 74 60
Freeport 77 60
Freeport/Albertus Arpt 78 61
Gladstone L&D 18 66
Greater Kankakee Arpt 94 65
Illinois City L&D 16 79 60
Joliet Rgl Arpt 89 65
Kankakee 93 68
Kewanee 84 65
Lansing Municipal Arpt 90 64
Lisle Morton Arboretum 84 64
Marseilles 85 63
Moline/Quad Cities Arpt 83 65
Morris 88 66
Mount Carroll 78 63
New Boston L&D 17 66
Ottawa 84 64
Park Forest 89 65
Paw Paw 84 62
Peru/IL Valley Rgl Arpt 84 66
Rochelle Municipal Arpt 82 62
Rockford Arpt 76 65
Romeoville/NWS Chicago 86 65
Savanna/Tri-Township Arpt 78 63
Schaumburg Rgl Arpt 84 65
Sterling/Rock Falls Arpt 83 64
Stockton 73 60
Waukegan Rgl Arpt 79 62
West Chicago/DuPage Arpt 83 63
Wheeling/Chicago Exec Arpt 83 64
...CENTRAL ILLINOIS...
Aledo 83 64
Avon 89 65
Bentley 93 66
Bloomington/Cntrl IL Rgl Arpt 96 66
Champaign 3S 97 69
Champaign/Willard Arpt 97 60
Coles County Arpt 97 66
Decatur Arpt 99 67
Edgar County Arpt 98 62
Galesburg Municipal Arpt 88 65
Galesburg Water Plant 86 56
Jacksonville Municipal Arpt 97 69
Jerseyville 2 SW 99 73
Knoxville 88 66
La Harpe 88 64
Lacon/Marshall Co Arpt 88 66
Lincoln NWS 97 65
Macomb Municipal Arpt 92 67
Monmouth 4NW 87 65
Morrisonville 76
Normal 4NE 99 65
Ogden 98 63
Pana 94 69
Paris 97 66
Peoria Intl Arpt 91 68
Pittsfield/Penstone Arpt 96 70
Pontiac Municipal Arpt 81 67
Quincy L&D 21 88 60
Quincy Rgl Arpt 94 69
Rantoul Aviation Center 97 62
Shelbyville Dam 100 68
Sidell 4N 97 65
Springfield/Capital Arpt 99 71
Tuscola 95 67
Windsor 97 66
...SOUTHERN ILLINOIS...
Anna 94 66
Cahokia/Parks Arpt 100 69
Carbondale 95 71
Casey 103 65
Crawford County Arpt 99 61
Effingham Co Arpt 98 66
Fairfield 98 69
Fairfield Municipal Arpt 98 66
Harrisburg Arpt 95 66
Lawrenceville 2WSW 96 70
Lawrenceville/Vincennes Arpt 97 65
Millstadt 97 69
Mt Carmel Municipal Arpt 100 64
Olney/Noble Arpt 100 66
Salem 99 67
Salem/Leckrone Arpt 101 69
Smithland Dam 96 72
Sparta Community Arpt 98 68
$$
|
|
Preliminary data based on the Real-Time Mesoscale Analysis
CoCoRaHS Observations: |
Observations from NWS, FAA and cooperative weather observers
920 AM CDT Wed Sep 16 2026
Automated and Cooperative Observer Reports
Values represent precipitation and snowfall
for the 24-hour period ending around 7 am.
Location Pcpn Snow Depth
...NORTHERN ILLINOIS...
Aurora 0.08 0.0 0
Aurora/Sugar Grove Arpt 0.11
Barrington 0.40
Batavia 0.11 0.0 0
Bourbonnais 0.69 0.0 0
Chicago Midway Arpt 0.02
Chicago O'Hare Arpt 0.07
Coal City 4NNW 0.27 0.0 0
DeKalb Northern IL Univ 0.56 0.0 0
Earlville 3S 0.18 0.0 0
Elgin 0.40 0.0 0
Elgin 0.22 0.0 0
Elizabeth 0.52 0.0 0
Freeport 0.39
Gladstone L&D 18 0.40 0.0 0
Illinois City L&D 16 1.40
Kankakee 0.54
Kewanee 0.40 0.0 0
Lisle Morton Arboretum 0.04 0.0 0
Marseilles 0.27
Mendota 0.25
Moline/Quad Cities Arpt 0.11
Morris 0.42 0.0 0
Mount Carroll 0.40
New Boston L&D 17 0.38
Ottawa 0.40
Park Forest 0.09 0.0 0
Paw Paw 0.35 0.0 0
Romeoville/NWS Chicago 0.10 0.0 0
Steward 0.59 0.0 0
Stockton 0.36 0.0 0
Streator 0.90
Waukegan Rgl Arpt 0.24
Westmont 0.10
Wheeling/Chicago Exec Arpt 0.24
Woodstock 5NW 0.50
...CENTRAL ILLINOIS...
Aledo 0.49 0.0 0
Athens 4SW 1.87
Augusta 1.73 0.0 0
Avon 0.0 0
Bentley 1.27
Bloomington Waterworks 2.19 0.0 0
Bloomington/Cntrl IL Rgl Arpt 1.61
Buffalo 1.40 0.0 0
Champaign 3S 1.13 0.0 0
Champaign/Willard Arpt 0.90
Cisco 1.37 0.0 0
Coles County Arpt 0.00
Decatur Arpt 0.51
Fisher 0.87
Galesburg Water Plant 0.67
Jerseyville 2 SW T 0.0 0
Knoxville 1.72 0.0 0
La Harpe 1.55
Lake Springfield 1.31
Lincoln NWS 1.50 0
Lovington 0.15
Macomb 2.02 0.0 0
Medora 0.01 0.0 0
Monmouth 4NW 0.50
Morrisonville 0.08 0.0 0
Morton 1.55 0.0 0
Mount Pulaski 1.69 0.0 0
Moweaqua 2S 0.09
Normal 4NE 1.57 0.0 0
Ogden 0.20 0.0 0
Pana 0.00
Paris 0.00 0.0 0
Peoria 5NW 2.62 0.0 0
Peoria Intl Arpt 1.32
Quincy L&D 21 2.09
Quincy Rgl Arpt 1.26
Rantoul 0.54
Roanoke 1.39 0.0 0
Shelbyville Dam 0.00 0.0 0
Sherman 1.28
Sidell 4N 0.50
Springfield/Capital Arpt 1.01
Tuscola 0.21 0.0 0
Windsor 0.00 0.0 0
Yates City 4.41
...SOUTHERN ILLINOIS...
Anna 0.00
Cahokia/Parks Arpt 0.00
Carbondale 0.00 0.0 0
Casey 0.00 0.0 0
Edwardsville 2 W 0.00
Fairfield 0.00 0.0 0
Highland T 0.0 0
Lawrenceville 2WSW T
Lawrenceville/Vincennes Arpt 0.00
Medora 0.01 0.0 0
Millstadt 0.35
Neoga T 0.0 0
Salem 0.00
Smithland Dam 0.00 0.0 0
$$
|
| Preliminary data based on analysis from the NWS National Operational Hydrologic Remote Sensing Center (NOHRSC)
CoCoRaHS Observations: |
Observations from NWS, FAA and cooperative weather observers
920 AM CDT Wed Sep 16 2026
Automated and Cooperative Observer Reports
Values represent precipitation and snowfall
for the 24-hour period ending around 7 am.
Location Pcpn Snow Depth
...NORTHERN ILLINOIS...
Aurora 0.08 0.0 0
Aurora/Sugar Grove Arpt 0.11
Barrington 0.40
Batavia 0.11 0.0 0
Bourbonnais 0.69 0.0 0
Chicago Midway Arpt 0.02
Chicago O'Hare Arpt 0.07
Coal City 4NNW 0.27 0.0 0
DeKalb Northern IL Univ 0.56 0.0 0
Earlville 3S 0.18 0.0 0
Elgin 0.40 0.0 0
Elgin 0.22 0.0 0
Elizabeth 0.52 0.0 0
Freeport 0.39
Gladstone L&D 18 0.40 0.0 0
Illinois City L&D 16 1.40
Kankakee 0.54
Kewanee 0.40 0.0 0
Lisle Morton Arboretum 0.04 0.0 0
Marseilles 0.27
Mendota 0.25
Moline/Quad Cities Arpt 0.11
Morris 0.42 0.0 0
Mount Carroll 0.40
New Boston L&D 17 0.38
Ottawa 0.40
Park Forest 0.09 0.0 0
Paw Paw 0.35 0.0 0
Romeoville/NWS Chicago 0.10 0.0 0
Steward 0.59 0.0 0
Stockton 0.36 0.0 0
Streator 0.90
Waukegan Rgl Arpt 0.24
Westmont 0.10
Wheeling/Chicago Exec Arpt 0.24
Woodstock 5NW 0.50
...CENTRAL ILLINOIS...
Aledo 0.49 0.0 0
Athens 4SW 1.87
Augusta 1.73 0.0 0
Avon 0.0 0
Bentley 1.27
Bloomington Waterworks 2.19 0.0 0
Bloomington/Cntrl IL Rgl Arpt 1.61
Buffalo 1.40 0.0 0
Champaign 3S 1.13 0.0 0
Champaign/Willard Arpt 0.90
Cisco 1.37 0.0 0
Coles County Arpt 0.00
Decatur Arpt 0.51
Fisher 0.87
Galesburg Water Plant 0.67
Jerseyville 2 SW T 0.0 0
Knoxville 1.72 0.0 0
La Harpe 1.55
Lake Springfield 1.31
Lincoln NWS 1.50 0
Lovington 0.15
Macomb 2.02 0.0 0
Medora 0.01 0.0 0
Monmouth 4NW 0.50
Morrisonville 0.08 0.0 0
Morton 1.55 0.0 0
Mount Pulaski 1.69 0.0 0
Moweaqua 2S 0.09
Normal 4NE 1.57 0.0 0
Ogden 0.20 0.0 0
Pana 0.00
Paris 0.00 0.0 0
Peoria 5NW 2.62 0.0 0
Peoria Intl Arpt 1.32
Quincy L&D 21 2.09
Quincy Rgl Arpt 1.26
Rantoul 0.54
Roanoke 1.39 0.0 0
Shelbyville Dam 0.00 0.0 0
Sherman 1.28
Sidell 4N 0.50
Springfield/Capital Arpt 1.01
Tuscola 0.21 0.0 0
Windsor 0.00 0.0 0
Yates City 4.41
...SOUTHERN ILLINOIS...
Anna 0.00
Cahokia/Parks Arpt 0.00
Carbondale 0.00 0.0 0
Casey 0.00 0.0 0
Edwardsville 2 W 0.00
Fairfield 0.00 0.0 0
Highland T 0.0 0
Lawrenceville 2WSW T
Lawrenceville/Vincennes Arpt 0.00
Medora 0.01 0.0 0
Millstadt 0.35
Neoga T 0.0 0
Salem 0.00
Smithland Dam 0.00 0.0 0
$$
|
| Preliminary data based on analysis from the NWS National Operational Hydrologic Remote Sensing Center (NOHRSC)
CoCoRaHS Observations: |
Observations from NWS, FAA and cooperative weather observers
920 AM CDT Wed Sep 16 2026
Automated and Cooperative Observer Reports
Values represent precipitation and snowfall
for the 24-hour period ending around 7 am.
Location Pcpn Snow Depth
...NORTHERN ILLINOIS...
Aurora 0.08 0.0 0
Aurora/Sugar Grove Arpt 0.11
Barrington 0.40
Batavia 0.11 0.0 0
Bourbonnais 0.69 0.0 0
Chicago Midway Arpt 0.02
Chicago O'Hare Arpt 0.07
Coal City 4NNW 0.27 0.0 0
DeKalb Northern IL Univ 0.56 0.0 0
Earlville 3S 0.18 0.0 0
Elgin 0.40 0.0 0
Elgin 0.22 0.0 0
Elizabeth 0.52 0.0 0
Freeport 0.39
Gladstone L&D 18 0.40 0.0 0
Illinois City L&D 16 1.40
Kankakee 0.54
Kewanee 0.40 0.0 0
Lisle Morton Arboretum 0.04 0.0 0
Marseilles 0.27
Mendota 0.25
Moline/Quad Cities Arpt 0.11
Morris 0.42 0.0 0
Mount Carroll 0.40
New Boston L&D 17 0.38
Ottawa 0.40
Park Forest 0.09 0.0 0
Paw Paw 0.35 0.0 0
Romeoville/NWS Chicago 0.10 0.0 0
Steward 0.59 0.0 0
Stockton 0.36 0.0 0
Streator 0.90
Waukegan Rgl Arpt 0.24
Westmont 0.10
Wheeling/Chicago Exec Arpt 0.24
Woodstock 5NW 0.50
...CENTRAL ILLINOIS...
Aledo 0.49 0.0 0
Athens 4SW 1.87
Augusta 1.73 0.0 0
Avon 0.0 0
Bentley 1.27
Bloomington Waterworks 2.19 0.0 0
Bloomington/Cntrl IL Rgl Arpt 1.61
Buffalo 1.40 0.0 0
Champaign 3S 1.13 0.0 0
Champaign/Willard Arpt 0.90
Cisco 1.37 0.0 0
Coles County Arpt 0.00
Decatur Arpt 0.51
Fisher 0.87
Galesburg Water Plant 0.67
Jerseyville 2 SW T 0.0 0
Knoxville 1.72 0.0 0
La Harpe 1.55
Lake Springfield 1.31
Lincoln NWS 1.50 0
Lovington 0.15
Macomb 2.02 0.0 0
Medora 0.01 0.0 0
Monmouth 4NW 0.50
Morrisonville 0.08 0.0 0
Morton 1.55 0.0 0
Mount Pulaski 1.69 0.0 0
Moweaqua 2S 0.09
Normal 4NE 1.57 0.0 0
Ogden 0.20 0.0 0
Pana 0.00
Paris 0.00 0.0 0
Peoria 5NW 2.62 0.0 0
Peoria Intl Arpt 1.32
Quincy L&D 21 2.09
Quincy Rgl Arpt 1.26
Rantoul 0.54
Roanoke 1.39 0.0 0
Shelbyville Dam 0.00 0.0 0
Sherman 1.28
Sidell 4N 0.50
Springfield/Capital Arpt 1.01
Tuscola 0.21 0.0 0
Windsor 0.00 0.0 0
Yates City 4.41
...SOUTHERN ILLINOIS...
Anna 0.00
Cahokia/Parks Arpt 0.00
Carbondale 0.00 0.0 0
Casey 0.00 0.0 0
Edwardsville 2 W 0.00
Fairfield 0.00 0.0 0
Highland T 0.0 0
Lawrenceville 2WSW T
Lawrenceville/Vincennes Arpt 0.00
Medora 0.01 0.0 0
Millstadt 0.35
Neoga T 0.0 0
Salem 0.00
Smithland Dam 0.00 0.0 0
$$
|
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