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 Wed May 13 at 01:00 PM 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 41 35 310 at 20 30.06 10 CLR KALN
AURORA MUNICIPAL 61 37 42 340 at 17 30 30.0 10 CLR KARR
BLOOMINGTON/NORM 64 45 49 330 at 12 30.03 1016.3 10 48 SCT KBMI
CAHOKIA/ST. LOUI 73 39 29 340 at 15 23 30.05 1017.3 10 CLR KCPS
CAIRO 77 39 26 340 at 12 18 30.05 10 CLR KCIR
CARBONDALE/MURPH 73 39 29 330 at 10 18 30.03 1016.5 10 CLR KMDH
CENTRALIA 70 41 35 310 at 13 20 30.03 10 CLR KENL
CHAMPAIGN/URBANA 63 45 52 340 at 14 30.0 1015.7 10 38 OVC KCMI
CHICAGO NEXRAD 61 39 45 330 at 9 21 30.01 10 48 SCT KLOT
CHICAGO/MIDWAY 54 39 58 30 at 12 16 30.02 1016.3 10 41 FEW KMDW
CHICAGO/O'HARE A 54 39 58 70 at 12 30.0 10 49 BKN KORD
CHICAGO/PALWAUKE 52 37 58 60 at 9 30.03 1016.8 10 60 BKN KPWK
CHICAGO/WAUKEGAN 50 37 62 70 at 11 18 30.01 1016.4 10 35 SCT KUGN
DANVILLE/VERMILI 63 45 52 330 at 10 21 29.99 4 50 OVC KDNV
DE KALB 59 37 44 330 at 17 23 30.02 10 CLR KDKB
DECATUR AIRPORT 64 45 49 320 at 14 21 30.02 1016.3 10 50 SCT KDEC
EFFINGHAM 68 45 43 310 at 16 20 30.02 10 CLR K1H2
FAIRFIELD 72 39 31 300 at 8 30.0 10 CLR KFWC
FLORA 70 41 35 290 at 19 23 30.01 10 CLR KFOA
FREEPORT 59 43 55 340 at 16 20 30.07 10 45 OVC KFEP
GALESBURG MUNICI 63 41 45 350 at 14 22 30.08 10 CLR KGBG
GREATER KANKAKEE 57 45 63 60 at 9 14 30.01 10 50 OVC KIKK
HARRISBURG 73 43 33 300 at 10 16 30.02 10 CLR KHSB
JACKSONVILLE 66 43 43 340 at 14 21 30.06 10 CLR KIJX
JOLIET PARK DIST 61 41 48 340 at 10 17 30.0 10 44 SCT KJOT
LACON/MARSHALL C 63 39 42 350 at 14 22 30.03 10 48 SCT KC75
LAWRENCEVILLE-VI 72 39 31 300 at 19 27 29.97 10 CLR KLWV
LINCOLN/LOGAN CO 66 46 49 330 at 7 14 30.03 10 44 SCT KAAA
LITCHFIELD 64 43 45 320 at 16 20 30.07 10 CLR K3LF
MACOMB 64 43 45 330 at 17 27 30.1 10 CLR KMQB
MARION REGIONAL 73 39 29 330 at 12 20 30.02 10 CLR KMWA
MATTOON/CHARLEST 66 45 46 320 at 13 26 29.99 10 55 BKN KMTO
METROPOLIS_MUNIC 73 39 29 320 at 10 17 30.04 10 CLR KM30
MOLINE/QUAD CITY 64 43 45 340 at 13 20 30.06 1017.7 10 50 FEW KMLI
MORRIS 61 39 45 340 at 7 29.99 10 CLR KC09
MOUNT VERNON (AW 70 43 38 290 at 8 14 30.02 10 CLR KMVN
MOUNT_CARMEL 73 37 27 260 at 15 20 29.98 10 CLR KAJG
OLNEY-NOBLE 70 43 38 300 at 14 19 30.0 10 CLR KOLY
PARIS 68 45 43 330 at 11 17 29.98 10 55 SCT KPRG
PEORIA REGIONAL 64 45 49 360 at 7 17 30.04 10 50 FEW KPIA
PERU 64 39 39 330 at 13 20 30.03 10 50 SCT KVYS
PITTSFIELD 66 41 40 320 at 16 20 30.09 10 CLR KPPQ
PONTIAC 63 42 46 at 30.01 10 46 SCT KPNT
QUINCY MUNI/BALD 66 39 37 340 at 16 26 30.1 10 CLR KUIN
RANTOUL/FRANK EL 63 45 52 350 at 12 19 29.99 10 50 OVC KTIP
ROBINSON_MUNI_AR 70 43 38 300 at 14 19 29.97 10 CLR KRSV
ROCHELLE MUNI AI 61 36 39 350 at 17 24 30.03 10 CLR KRPJ
ROCKFORD 61 37 42 340 at 15 25 30.05 10 50 BKN KRFD
SALEM-LECKRONE 72 45 38 300 at 12 17 30.03 10 CLR KSLO
SAVANNA/TRI-TOWN 59 39 48 340 at 11 15 30.08 10 43 BKN KSFY
SCOTT AFB/BELLEV 72 43 35 320 at 13 21 30.03 1017.0 10 CLR KBLV
SPRINGFIELD/CAPI 68 43 40 320 at 14 30.04 1017.1 10 CLR KSPI
STERLING ROCKFAL 64 41 42 340 at 12 30.06 1017.6 10 48 FEW KSQI
TAYLORVILLE 66 43 43 310 at 13 20 30.04 10 CLR KTAZ
W. CHICAGO/DU PA 61 37 42 340 at 13 23 30.0 10 85 BKN KDPA
205
FPUS63 KILX 131605
SFTIL
ILZ001>013-015>021-023>108-132200-
Tabular State Forecast for Illinois
National Weather Service Lincoln IL
1105 AM CDT Wed May 13 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 Thu Fri Sat Sun Mon Tue
May 13 May 14 May 15 May 16 May 17 May 18 May 19
...Northwest IL...
Moline/Rock Island
Sunny Sunny Ptcldy Tstrms Tstrms Tstrms Shwrs
/71 44/75 56/83 61/86 61/87 68/90 64/80
/00 00/00 50/10 40/50 60/50 20/60 60/60
Sterling/Rock Falls
Sunny Sunny Ptcldy Tstrms Tstrms Tstrms Shwrs
/68 42/73 53/80 58/85 58/86 65/90 62/80
/00 00/00 40/10 40/50 50/50 30/60 70/60
...North central IL...
DeKalb
Ptcldy Sunny Ptcldy Shwrs Ptcldy Tstrms Shwrs
/61 39/69 49/76 57/84 57/83 63/89 62/80
/00 00/00 30/30 30/60 60/40 40/50 70/70
Rockford
Ptcldy Sunny Ptcldy Shwrs Tstrms Tstrms Shwrs
/62 40/71 50/78 57/85 56/84 63/90 62/79
/00 00/00 40/40 30/50 50/50 50/50 70/70
...Northeast IL...
Aurora
Ptcldy Sunny Ptcldy Shwrs Ptcldy Tstrms Shwrs
/60 38/70 48/76 58/85 58/84 64/91 64/81
/00 00/00 20/20 30/60 70/40 40/50 70/70
Chicago Downtown
Ptcldy Sunny Ptcldy Shwrs Shwrs Ptcldy Shwrs
/54 40/64 49/76 59/84 57/82 63/93 66/83
/00 00/00 20/20 30/60 70/50 40/40 60/60
Chicago O'Hare
Ptcldy Sunny Ptcldy Shwrs Tstrms Ptcldy Shwrs
/57 38/67 49/76 59/85 59/82 64/91 67/82
/00 00/00 20/20 30/60 70/50 40/40 60/70
Joliet
Ptcldy Sunny Ptcldy Shwrs Ptcldy Tstrms Shwrs
/60 39/70 49/76 59/85 59/85 65/91 66/82
/00 00/00 20/30 30/60 70/40 30/50 60/70
Kankakee
Ptcldy Sunny Shwrs Tstrms Ptcldy Ptcldy Shwrs
/61 39/69 47/75 58/85 59/86 65/92 66/83
/00 00/00 20/50 20/70 70/30 20/40 60/70
Waukegan
Ptcldy Sunny Ptcldy Shwrs Shwrs Ptcldy Shwrs
/54 39/62 46/75 57/81 53/77 59/89 62/79
/00 00/00 20/20 30/60 60/50 50/40 60/60
...West central IL...
Jerseyville
Sunny Sunny Tstrms Tstrms Ptcldy Ptcldy Tstrms
/72 44/73 54/82 63/83 63/88 68/90 67/82
/00 00/00 60/60 40/70 60/10 10/40 70/70
Macomb
Sunny Sunny Shwrs Tstrms Ptcldy Tstrms Shwrs
/72 44/75 55/83 62/86 61/88 69/91 64/81
/00 00/00 60/50 40/70 70/30 20/60 60/70
Quincy
Sunny Sunny Tstrms Tstrms Ptcldy Tstrms Shwrs
/74 43/76 57/84 65/86 64/90 71/91 66/81
/00 00/00 60/60 30/60 60/20 10/50 60/70
...Central IL...
Decatur
Sunny Sunny Shwrs Tstrms Ptcldy Ptcldy Tstrms
/69 44/71 52/77 62/84 63/86 68/90 69/83
/00 00/00 30/70 40/70 70/20 10/30 60/70
LaSalle/Peru
Sunny Sunny Ptcldy Tstrms Tstrms Tstrms Shwrs
/67 41/72 53/79 60/85 60/86 67/91 66/82
/00 00/00 40/40 40/60 70/50 30/50 70/70
Peoria
Sunny Sunny Shwrs Tstrms Ptcldy Tstrms Shwrs
/69 44/74 54/81 62/86 62/88 69/92 67/82
/00 00/00 50/50 30/70 70/40 30/50 70/70
Pontiac
Sunny Sunny Shwrs Tstrms Ptcldy Ptcldy Shwrs
/66 40/71 50/78 60/87 61/88 67/93 67/84
/00 00/00 40/60 40/60 70/30 20/40 60/70
Springfield
Sunny Sunny Tstrms Tstrms Ptcldy Ptcldy Tstrms
/71 44/74 54/81 64/86 63/89 69/92 69/84
/00 00/00 50/60 30/70 70/20 10/40 60/70
...East central IL...
Champaign/Urbana
Ptcldy Sunny Shwrs Tstrms Ptcldy Ptcldy Tstrms
/68 42/70 50/76 61/84 62/86 67/91 69/84
/00 00/00 20/60 40/70 70/30 10/30 60/70
Charleston/Mattoon
Sunny Sunny Shwrs Tstrms Ptcldy Ptcldy Tstrms
/68 43/70 51/75 63/82 64/86 68/89 70/83
/00 00/00 20/60 40/70 70/20 10/30 60/70
...Southwest IL...
Belleville
Sunny Sunny Ptcldy Tstrms Sunny Ptcldy Tstrms
/75 46/74 55/83 66/86 65/90 70/92 71/86
/00 00/00 40/40 40/60 50/10 00/30 60/70
Chester
Sunny Sunny Ptcldy Tstrms Sunny Ptcldy Tstrms
/75 43/73 54/81 65/86 64/88 68/90 69/85
/00 00/00 10/30 30/50 30/10 00/30 50/70
...South central IL...
Carbondale
Sunny Sunny Ptcldy Ptcldy Sunny Ptcldy Tstrms
/76 46/75 54/84 68/87 66/90 70/91 71/87
/00 00/00 10/20 30/30 20/00 00/30 40/70
Centralia
Sunny Sunny Ptcldy Tstrms Sunny Sunny Tstrms
/73 45/72 53/79 66/85 66/88 69/91 72/85
/00 00/00 10/40 40/50 50/10 00/30 50/70
Mount Vernon
Sunny Sunny Ptcldy Tstrms Sunny Sunny Tstrms
/74 46/73 53/82 66/86 66/89 69/91 72/86
/00 00/00 00/40 30/50 50/10 00/20 50/70
...Southeast IL...
Lawrenceville
Sunny Sunny Ptcldy Tstrms Sunny Sunny Tstrms
/73 45/71 50/79 65/86 66/90 69/93 72/88
/00 00/00 00/30 40/50 50/10 10/20 50/80
$$