CXUS53 KLOT 150800 CF6ORD PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: CHICAGO-OHARE MONTH: DECEMBER YEAR: 2025 LATITUDE: 41 58 N LONGITUDE: 87 54 W TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND ================================================================================ 1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18 12Z AVG MX 2MIN DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR ================================================================================ 1 30 17 24 -11 41 0 0.13 1.4 6 4.4 12 160 M M 9 1 17 140 2 24 17 21 -13 44 0 T 0.1 7 9.2 18 200 M M 8 18 26 190 3 30 16 23 -11 42 0 0.03 0.4 6 11.7 22 340 M M 9 1 31 200 4 21 7 14 -20 51 0 0.00 0.0 5 5.4 17 340 M M 1 22 340 5 30 9 20 -13 45 0 0.00 0.0 5 11.5 21 210 M M 7 33 230 6 32 26 29 -4 36 0 0.01 0.2 4 4.3 12 180 M M 10 1 18 200 7 30 16 23 -10 42 0 0.35 4.6 8 11.5 21 360 M M 9 128 27 360 8 26 17 22 -10 43 0 T T 8 7.4 15 180 M M 8 22 180 9 38 21 30 -2 35 0 0.13 0.1 8 13.7 25 210 M M 9 18 38 200 10 40 27 34 2 31 0 0.07 0.1 3 15.4 25 330 M M 10 1 37 330 11 27 23 25 -7 40 0 0.00 0.0 1 6.2 14 320 M M 10 20 320 12 31 20 26 -5 39 0 T T 1 7.3 17 260 M M 8 18 27 250 13 26 2 14 -17 51 0 0.00 0.0 0 11.8 21 300 M M 8 1 33 260 14 10 -2 4 -27 61 0 0.00 0.0 0 10.9 18 310 M M 3 25 310 ================================================================================ SM 395 216 601 0 0.72 6.9 130.7 M 109 ================================================================================ AV 28.2 15.4 9.3 FASTST M M 8 MAX(MPH) MISC ----> # 25 210 38 200 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: CHICAGO-OHARE MONTH: DECEMBER YEAR: 2025 LATITUDE: 41 58 N LONGITUDE: 87 54 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 21.8 TOTAL FOR MONTH: 0.72 1 = FOG OR MIST DPTR FM NORMAL: -10.8 DPTR FM NORMAL: -0.31 2 = FOG REDUCING VISIBILITY HIGHEST: 40 ON 10 GRTST 24HR 0.36 ON 6- 7 TO 1/4 MILE OR LESS LOWEST: -2 ON 14 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 7.2 INCHES 5 = HAIL GRTST 24HR 4.6 ON 7- 7 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: 8 ON 9, 8 7 = DUSTSTORM OR SANDSTORM: VSBY 1/2 MILE OR LESS 8 = SMOKE OR HAZE [NO. OF DAYS WITH] [WEATHER - DAYS WITH] 9 = BLOWING SNOW X = TORNADO MAX 32 OR BELOW: 12 0.01 INCH OR MORE: 6 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 3 MIN 32 OR BELOW: 14 0.50 INCH OR MORE: 0 MIN 0 OR BELOW: 1 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 601 CLEAR (SCALE 0-3) 1 DPTR FM NORMAL 150 PTCLDY (SCALE 4-7) 6 TOTAL FM JUL 1 1570 CLOUDY (SCALE 8-10) 7 DPTR FM NORMAL -32 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL 0 [PRESSURE DATA] TOTAL FM JAN 1 1215 HIGHEST SLP M ON M DPTR FM NORMAL 212 LOWEST SLP 29.26 ON 10 [REMARKS]