How to interpret surface observations
Latest Illinois Observations/Forecast:
Plymouth State University Weather Center
URL Address: <a href="https://vortex.plymouth.edu/">https://vortex.plymouth.edu</a><br>
Illinois Observations for Fri Jun 26 at 09:00 AM EDT
T TD RH WIND GUST ALSTG SLP VIS CLOUDS WX PR6 PR24
Station F F % deg kts kts in Hg mb mi 100ftCOV in in ID
ALTON/ST LOUIS R 70 68 94 100 at 4 29.98 7 90 OVC -RA KALN
AURORA MUNICIPAL 63 57 82 90 at 7 30.07 1018.0 10 CLR KARR
BLOOMINGTON/NORM 64 64 100 50 at 8 30.05 1016.6 10 60 OVC KBMI
CAHOKIA/ST. LOUI 70 68 94 110 at 3 29.96 10 85 OVC KCPS
CAIRO 72 72 100 150 at 4 30.01 10 110 BKN KCIR
CARBONDALE/MURPH 70 68 94 140 at 6 29.99 10 85 OVC KMDH
CENTRALIA 72 72 100 0 at 0 29.99 7 60 OVC -RA KENL
CHAMPAIGN/URBANA 68 64 88 90 at 7 30.04 1016.7 10 65 OVC KCMI
CHICAGO NEXRAD 63 59 88 50 at 9 30.08 10 150 BKN KLOT
CHICAGO/LANSING 63 57 82 90 at 3 30.09 10 CLR KIGQ
CHICAGO/MIDWAY 64 55 73 70 at 10 30.08 10 250 BKN KMDW
CHICAGO/O'HARE A 64 55 73 70 at 8 30.08 10 250 BKN KORD
CHICAGO/PALWAUKE 64 57 77 80 at 5 30.11 1019.3 10 110 FEW KPWK
CHICAGO/WAUKEGAN 61 57 88 60 at 5 30.1 1018.9 10 CLR KUGN
DANVILLE/VERMILI 66 64 94 0 at 0 30.06 10 60 OVC KDNV
DE KALB 61 57 88 60 at 7 30.09 10 CLR KDKB
DECATUR AIRPORT 68 64 88 100 at 6 30.02 10 95 OVC KDEC
EFFINGHAM 70 70 100 110 at 4 30.04 3 40 OVC RA K1H2
FAIRFIELD 70 70 100 170 at 6 30.01 7 30 OVC RA KFWC
FLORA 70 140 at 5 30.02 5 75 BKN HZ KFOA
FREEPORT 61 61 100 0 at 0 30.09 10 50 BKN KFEP
GALESBURG MUNICI 68 61 78 140 at 3 30.03 10 65 OVC KGBG
GREATER KANKAKEE 63 59 88 70 at 8 30.07 10 100 OVC KIKK
HARRISBURG 70 70 100 140 at 3 30.02 10 60 OVC -RA KHSB
JACKSONVILLE 66 66 100 100 at 3 29.98 10 65 OVC KIJX
JOLIET PARK DIST 64 57 77 80 at 5 30.07 10 CLR KJOT
LACON/MARSHALL C 64 59 83 100 at 6 30.02 10 120 OVC KC75
LAWRENCEVILLE-VI 70 68 94 180 at 3 30.03 1016.5 10 46 BKN KLWV
LITCHFIELD 68 68 100 110 at 3 30.01 5 3 OVC BR K3LF
MACOMB 66 66 100 0 at 0 30.04 7 50 OVC -RA KMQB
MARION REGIONAL 70 68 94 140 at 7 30.0 10 60 OVC KMWA
MATTOON/CHARLEST 68 66 94 0 at 0 30.02 10 75 OVC KMTO
METROPOLIS_MUNIC 68 68 100 100 at 5 10 90 OVC -RA KM30
MOLINE/QUAD CITY 66 63 88 90 at 7 30.03 10 100 OVC -RA KMLI
MOUNT VERNON (AW 70 70 100 170 at 4 5 60 OVC -RA KMVN
MOUNT_CARMEL 72 70 94 150 at 4 30.03 10 110 OVC KAJG
OLNEY-NOBLE 70 70 100 140 at 4 30.02 7 6 OVC 0.07 KOLY
PARIS 66 64 94 90 at 5 30.03 10 120 BKN KPRG
PEORIA REGIONAL 66 63 88 30 at 4 30.03 9 50 OVC -RA KPIA
PERU 64 61 88 80 at 7 30.05 7 120 BKN KVYS
PITTSFIELD 68 67 98 90 at 3 29.99 7 11 OVC KPPQ
PONTIAC 64 63 96 at 30.04 10 120 BKN -RA KPNT
QUINCY MUNI/BALD 64 64 100 60 at 7 6 48 OVC -RA KUIN
ROBINSON_MUNI_AR 70 70 100 140 at 5 30.01 7 46 OVC KRSV
ROCHELLE MUNI AI 62 53 74 80 at 8 30.06 10 CLR KRPJ
ROCKFORD 63 55 77 60 at 7 30.09 10 120 OVC KRFD
SALEM-LECKRONE 73 73 100 at 29.99 4 14 OVC RA KSLO
SAVANNA/TRI-TOWN 63 59 88 60 at 5 30.05 7 120 OVC -DZ KSFY
SCOTT AFB/BELLEV 70 70 100 0 at 0 2 75 OVC -RA KBLV
SPRINGFIELD/CAPI 70 64 83 90 at 6 30.0 10 44 OVC KSPI
STERLING ROCKFAL 63 61 94 80 at 7 30.06 10 CLR KSQI
TAYLORVILLE 68 66 94 110 at 6 30.0 10 75 OVC KTAZ
W. CHICAGO/DU PA 63 55 77 50 at 9 30.08 1018.1 10 CLR KDPA
069
FPUS63 KILX 260905
SFTIL
ILZ001>013-015>021-023>108-262200-
Tabular State Forecast for Illinois
National Weather Service Lincoln IL
405 AM CDT Fri Jun 26 2026
ROWS INCLUDE...
Daily predominant daytime weather 6AM-6PM
Forecast temperatures...early morning low/daytime high
Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM
- indicates temperatures below zero
MM indicates missing data
FCST FCST FCST FCST FCST FCST FCST
Today Sat Sun Mon Tue Wed Thu
Jun 26 Jun 27 Jun 28 Jun 29 Jun 30 Jul 01 Jul 02
...Northwest IL...
Moline/Rock Island
Mocldy Sunny Shwrs Sunny Sunny Sunny Sunny
/73 58/82 67/90 76/93 77/94 76/95 75/95
/20 10/00 50/50 00/00 00/00 10/10 00/10
Sterling/Rock Falls
Mocldy Sunny Ptcldy Sunny Sunny Sunny Sunny
/73 57/82 65/89 75/94 76/95 75/96 74/96
/20 10/00 40/40 00/00 00/00 10/10 00/10
...North central IL...
DeKalb
Ptcldy Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/72 56/79 62/85 74/91 76/93 75/94 74/94
/10 00/00 30/30 00/00 00/00 10/10 10/10
Rockford
Ptcldy Sunny Ptcldy Sunny Sunny Sunny Sunny
/73 55/81 62/87 74/92 77/94 76/95 74/95
/00 00/00 30/30 00/00 00/10 10/10 10/10
...Northeast IL...
Aurora
Mocldy Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/73 58/79 63/85 74/92 77/94 76/94 75/95
/20 10/00 20/20 00/00 00/00 10/10 10/10
Chicago Downtown
Mocldy Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/69 61/70 64/81 74/91 77/92 77/94 77/94
/20 10/00 10/10 10/00 00/00 10/10 10/10
Chicago O'Hare
Mocldy Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/71 59/77 63/85 75/92 79/96 78/98 78/97
/10 10/00 10/10 00/00 00/00 10/10 10/10
Joliet
Mocldy Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/73 59/80 64/86 74/92 77/94 76/95 75/95
/30 20/10 10/10 00/00 00/00 10/10 10/10
Kankakee
Shwrs Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/69 59/79 63/86 72/92 75/94 74/95 74/95
/60 40/10 10/10 00/00 00/00 00/00 00/10
Waukegan
Ptcldy Sunny Ptcldy Sunny Sunny Sunny Sunny
/67 57/71 60/76 70/91 76/92 75/93 74/92
/00 00/00 10/10 10/10 00/00 10/10 10/20
...West central IL...
Jerseyville
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/78 64/82 69/93 73/95 75/97 74/96 74/96
/100 50/20 40/40 00/00 00/00 00/00 00/00
Macomb
Shwrs Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/71 62/80 68/90 74/92 75/93 75/94 74/94
/50 20/00 60/60 00/00 00/00 00/00 00/10
Quincy
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/75 64/81 71/91 76/93 77/94 76/95 76/95
/90 20/10 50/50 00/00 00/00 00/00 00/00
...Central IL...
Decatur
Tstrms Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/73 63/80 67/89 73/92 75/93 74/94 73/94
/90 60/10 60/60 00/00 00/00 00/00 00/10
LaSalle/Peru
Mocldy Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/71 59/80 66/88 75/92 77/94 76/95 75/95
/40 20/10 40/40 00/00 00/00 00/10 10/10
Peoria
Tstrms Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/72 62/82 67/90 75/93 76/95 75/96 75/96
/70 30/10 60/60 00/00 00/00 00/10 10/10
Pontiac
Shwrs Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/69 59/80 65/88 74/92 76/94 75/95 74/95
/80 40/10 40/40 00/00 00/00 00/10 10/10
Springfield
Tstrms Mocldy Sunny Sunny Sunny Sunny Sunny
/74 63/82 69/91 75/94 76/96 76/96 75/96
/100 50/10 60/60 00/00 00/00 00/00 00/10
...East central IL...
Champaign/Urbana
Tstrms Ptcldy Shwrs Sunny Sunny Sunny Sunny
/71 63/80 66/88 73/93 74/94 74/95 73/95
/100 60/10 50/50 00/00 00/00 00/00 00/10
Charleston/Mattoon
Tstrms Ptcldy Ptcldy Sunny Sunny Sunny Sunny
/73 64/80 67/88 73/92 74/93 74/94 73/94
/100 70/10 60/60 00/00 00/00 00/00 00/10
...Southwest IL...
Belleville
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/81 68/85 72/94 75/96 76/97 77/97 77/97
/90 70/30 30/30 00/00 00/00 00/00 00/00
Chester
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/81 68/85 71/92 73/94 74/96 74/96 75/96
/90 80/40 40/10 00/00 00/00 00/00 00/10
...South central IL...
Carbondale
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/83 71/86 73/93 76/96 76/98 77/98 77/98
/80 80/40 40/10 00/00 00/00 00/00 00/00
Centralia
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/79 68/84 71/92 74/94 75/95 75/96 76/96
/90 70/30 40/40 00/00 00/00 00/00 00/10
Mount Vernon
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/80 69/85 71/93 74/95 76/96 76/97 76/97
/90 70/30 40/40 00/00 00/00 00/00 00/10
...Southeast IL...
Lawrenceville
Tstrms Ptcldy Sunny Sunny Sunny Sunny Sunny
/78 69/83 69/91 74/94 75/95 75/96 75/96
/90 80/20 60/60 00/00 00/00 00/00 00/10
$$