Plymouth State Surface Observation Data for IL

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 Sun Mar 15 at 05:00 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 54 45 71 130 at 10 29.64 10 CLR KALN AURORA MUNICIPAL 37 27 65 100 at 10 29.69 10 110 OVC KARR BLOOMINGTON/NORM 46 32 57 150 at 19 24 29.64 10 CLR KBMI CAHOKIA/ST. LOUI 59 46 63 180 at 8 29.59 1001.7 10 CLR KCPS CAIRO 63 46 55 180 at 10 29.74 10 CLR KCIR CARBONDALE/MURPH 59 45 59 180 at 9 29.68 1004.9 10 CLR KMDH CENTRALIA 57 43 59 160 at 9 29.69 10 CLR KENL CHAMPAIGN/URBANA 41 32 70 90 at 8 29.69 1005.6 10 CLR KCMI CHICAGO NEXRAD 41 27 56 80 at 10 16 10 120 OVC KLOT CHICAGO/MIDWAY 39 27 60 100 at 10 29.73 10 110 OVC KMDW CHICAGO/O'HARE A 37 27 65 70 at 8 29.73 10 110 BKN KORD CHICAGO/PALWAUKE 37 28 70 80 at 9 29.76 10 110 BKN KPWK CHICAGO/WAUKEGAN 36 30 81 70 at 12 29.77 10 95 OVC -RA KUGN DANVILLE/VERMILI 45 30 57 120 at 11 29.74 10 CLR KDNV DECATUR AIRPORT 46 36 66 140 at 11 29.64 1003.8 10 CLR KDEC EFFINGHAM 52 39 62 120 at 7 29.73 10 CLR K1H2 FAIRFIELD 57 41 55 170 at 4 29.73 10 CLR KFWC FLORA 46 41 81 140 at 7 29.72 10 CLR KFOA FREEPORT 37 28 70 90 at 13 29.73 10 60 OVC KFEP GALESBURG MUNICI 46 39 76 110 at 9 29.61 10 CLR KGBG GREATER KANKAKEE 43 27 52 120 at 15 29.76 10 CLR KIKK HARRISBURG 61 41 48 180 at 9 29.73 10 CLR KHSB JACKSONVILLE 54 41 62 130 at 8 29.59 10 CLR KIJX JOLIET PARK DIST 43 28 56 110 at 8 29.74 10 120 SCT KJOT LACON/MARSHALL C 43 30 61 110 at 5 29.65 10 CLR KC75 LAWRENCEVILLE-VI 48 39 71 160 at 7 29.73 1006.7 10 CLR KLWV LINCOLN/LOGAN CO 46 32 57 130 at 7 29.65 10 CLR KAAA LITCHFIELD 54 43 67 140 at 13 17 29.65 10 CLR K3LF MACOMB 48 36 62 140 at 12 18 29.59 10 120 SCT KMQB MARION REGIONAL 59 43 55 170 at 12 29.72 10 CLR KMWA MATTOON/CHARLEST 52 36 54 150 at 11 29.67 1004.7 10 CLR KMTO MOLINE/QUAD CITY 43 30 61 100 at 12 29.55 1000.9 10 120 FEW KMLI MORRIS 41 28 61 90 at 8 29.72 10 120 SCT KC09 MOUNT VERNON (AW 55 43 62 170 at 6 29.69 1005.7 10 CLR KMVN MOUNT_CARMEL 54 41 62 130 at 10 29.74 10 CLR KAJG OLNEY-NOBLE 55 39 54 140 at 9 29.73 10 CLR KOLY PARIS 45 30 57 0 at 0 29.73 10 CLR KPRG PEORIA REGIONAL 50 34 54 150 at 9 29.59 1002.1 10 CLR KPIA PERU 39 28 65 90 at 11 29.71 10 110 SCT KVYS PITTSFIELD 55 46 72 150 at 11 29.57 10 CLR KPPQ PONTIAC 43 28 56 120 at 13 29.7 10 CLR KPNT QUINCY MUNI/BALD 54 46 77 150 at 8 29.5 998.7 10 CLR KUIN RANTOUL/FRANK EL 45 28 53 130 at 11 29.71 10 CLR KTIP ROBINSON_MUNI_AR 48 36 62 130 at 9 29.75 10 CLR KRSV ROCHELLE MUNI AI 37 25 60 100 at 13 29.71 4 120 OVC HZ KRPJ ROCKFORD 39 25 56 70 at 11 20 29.7 10 100 OVC KRFD SALEM-LECKRONE 55 41 58 130 at 5 29.69 10 CLR KSLO SAVANNA/TRI-TOWN 39 27 60 90 at 8 20 29.68 10 75 OVC KSFY SCOTT AFB/BELLEV 54 46 77 170 at 6 29.64 1003.9 10 CLR KBLV SPARTA 59 48 67 180 at 12 19 29.68 10 CLR KSAR SPRINGFIELD/CAPI 54 39 58 150 at 14 22 29.6 1002.3 10 CLR KSPI STERLING ROCKFAL 39 28 65 100 at 16 25 29.62 1003.4 10 CLR KSQI TAYLORVILLE 50 37 62 140 at 9 29.66 10 CLR KTAZ W. CHICAGO/DU PA 37 27 65 90 at 9 29.71 10 90 BKN VC TS KDPA 066 FPUS63 KILX 150905 SFTIL ILZ001>013-015>021-023>108-152200- Tabular State Forecast for Illinois National Weather Service Lincoln IL 405 AM CDT Sun Mar 15 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 Mon Tue Wed Thu Fri Sat Mar 15 Mar 16 Mar 17 Mar 18 Mar 19 Mar 20 Mar 21 ...Northwest IL... Moline/Rock Island Tstrms Snow Sunny Ptcldy Ptcldy Ptcldy Ptcldy /58 16/22 5/28 21/47 33/58 38/65 39/57 /90 90/50 10/00 70/70 00/00 00/00 00/00 Sterling/Rock Falls Tstrms Snow Ptcldy Ptcldy Ptcldy Mocldy Ptcldy /57 17/23 6/26 19/45 32/54 36/62 37/56 /90 90/70 20/00 80/80 10/10 00/00 00/00 ...North central IL... DeKalb Tstrms Snoshwr Sunny Ptcldy Ptcldy Mocldy Ptcldy /58 20/21 7/24 18/43 32/53 36/60 36/53 /100 100/70 30/00 70/70 10/10 00/00 10/10 Rockford Tstrms Snoshwr Ptcldy Ptcldy Ptcldy Mocldy Ptcldy /56 19/20 6/24 17/43 32/51 35/58 35/52 /100 100/70 30/00 80/80 10/10 00/10 10/10 ...Northeast IL... Aurora Tstrms Snoshwr Sunny Snoshwr Ptcldy Mocldy Ptcldy /60 22/23 10/26 20/45 33/56 37/61 38/53 /90 100/70 40/00 70/70 10/10 00/10 10/10 Chicago Downtown Tstrms Snoshwr Ptcldy Snoshwr Ptcldy Mocldy Ptcldy /58 24/25 15/28 24/43 36/51 38/56 38/49 /70 100/70 50/00 60/60 10/10 00/10 10/10 Chicago O'Hare Tstrms Snoshwr Sunny Snoshwr Ptcldy Mocldy Ptcldy /60 23/24 12/27 22/44 34/54 38/58 38/51 /80 100/70 50/00 60/60 10/10 00/10 10/10 Joliet Tstrms Snoshwr Sunny Snoshwr Ptcldy Mocldy Ptcldy /61 24/24 11/27 21/45 33/57 37/62 38/54 /80 100/70 40/00 60/60 10/10 00/10 10/10 Kankakee Tstrms Snoshwr Ptcldy Snoshwr Ptcldy Ptcldy Ptcldy /66 24/25 11/26 21/46 32/58 37/63 38/55 /70 100/60 50/00 60/60 10/00 00/00 10/00 Waukegan Tstrms Snoshwr Sunny Snoshwr Ptcldy Mocldy Ptcldy /58 22/23 11/26 20/43 34/49 36/54 35/47 /90 100/70 50/00 60/60 10/10 10/10 10/10 ...West central IL... Jerseyville Tstrms Windy Sunny Ptcldy Sunny Ptcldy Ptcldy /66 19/28 12/35 28/61 40/70 43/74 47/67 /90 70/20 00/00 30/30 00/00 00/00 00/00 Macomb Tstrms Snow Sunny Ptcldy Sunny Ptcldy Ptcldy /61 15/22 6/30 25/55 35/64 40/71 43/62 /90 80/50 10/00 50/40 00/00 00/00 00/00 Quincy Tstrms Mocldy Ptcldy Ptcldy Sunny Ptcldy Ptcldy /65 15/25 9/35 30/60 40/70 44/75 47/66 /80 70/30 10/00 40/20 00/00 00/00 00/00 ...Central IL... Decatur Tstrms Blgsno Ptcldy Ptcldy Sunny Ptcldy Ptcldy /65 21/25 10/29 24/53 37/64 40/69 43/61 /80 100/40 20/00 60/60 00/00 00/00 00/00 LaSalle/Peru Tstrms Snoshwr Ptcldy Ptcldy Ptcldy Mocldy Ptcldy /60 20/22 9/27 21/47 33/59 38/65 39/56 /100 90/60 20/00 70/70 00/00 00/00 00/00 Peoria Tstrms Snow Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy /63 18/24 9/30 24/53 35/62 39/69 42/60 /90 70/70 20/00 60/60 00/00 00/00 00/00 Pontiac Tstrms Snoshwr Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy /63 22/23 9/27 21/49 33/60 38/66 39/57 /90 100/60 30/00 60/60 00/00 00/00 00/00 Springfield Tstrms Blgsno Ptcldy Ptcldy Sunny Ptcldy Ptcldy /65 19/25 10/31 26/57 38/66 41/71 45/64 /80 80/40 10/00 50/50 00/00 00/00 00/00 ...East central IL... Champaign/Urbana Tstrms Snow Ptcldy Ptcldy Sunny Ptcldy Ptcldy /66 23/25 11/28 22/51 35/62 38/67 41/59 /70 100/50 30/00 60/60 00/00 00/00 10/10 Charleston/Mattoon Tstrms Windy Ptcldy Ptcldy Sunny Ptcldy Ptcldy /67 23/26 11/29 24/53 37/63 40/68 44/60 /70 90/30 20/00 50/50 00/00 00/00 10/10 ...Southwest IL... Belleville Rain Mocldy Sunny Ptcldy Sunny Ptcldy Ptcldy /67 22/30 15/37 32/63 43/70 45/75 49/68 /90 80/20 00/00 20/20 00/00 00/00 00/00 Chester Tstrms Ptcldy Sunny Ptcldy Sunny Sunny Ptcldy /67 23/32 15/39 30/62 43/71 45/75 49/69 /90 80/10 00/00 10/10 00/00 00/00 00/00 ...South central IL... Carbondale Tstrms Mocldy Sunny Mocldy Sunny Ptcldy Ptcldy /70 25/34 17/40 30/60 43/70 46/75 50/69 /80 90/10 00/00 20/20 00/00 00/00 00/00 Centralia Tstrms Mocldy Sunny Ptcldy Sunny Ptcldy Ptcldy /67 23/30 14/35 28/59 41/67 44/71 48/65 /80 100/20 00/00 30/30 00/00 00/00 00/00 Mount Vernon Tstrms Mocldy Sunny Ptcldy Sunny Ptcldy Ptcldy /69 24/32 14/36 27/59 41/68 44/73 48/67 /80 90/10 00/00 30/30 00/00 00/00 00/00 ...Southeast IL... Lawrenceville Rain Mocldy Ptcldy Ptcldy Ptcldy Ptcldy Ptcldy /70 25/31 15/33 25/54 38/64 42/69 46/62 /50 100/20 20/00 30/30 10/00 00/00 00/00 $$