


WFO Monthly/Daily Climate Data
Issued by NWS
Issued by NWS
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842 CXUS53 KLOT 090800 CF6ORD PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: CHICAGO-OHARE MONTH: MAY 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 68 51 60 5 5 0 0.20 0.0 0 9.8 26 230 M M 10 13 40 240 2 57 46 52 -4 13 0 T 0.0 0 7.5 14 60 M M 10 18 19 70 3 54 44 49 -7 16 0 0.00 0.0 0 15.2 23 30 M M 7 29 30 4 59 45 52 -4 13 0 0.13 0.0 0 15.2 26 30 M M 9 33 40 5 61 47 54 -3 11 0 T 0.0 0 9.0 21 40 M M 8 1 29 40 6 77 47 62 5 3 0 0.00 0.0 0 6.8 17 310 M M 4 1 26 270 7 75 48 62 4 3 0 0.00 0.0 0 13.0 29 20 M M 7 8 35 20 8 58 41 50 -8 15 0 0.00 0.0 0 17.1 25 40 M M 5 38 50 ================================================================================ SM 509 369 79 0 0.33 0.0 93.6 M 60 ================================================================================ AV 63.6 46.1 11.7 FASTST M M 8 MAX(MPH) MISC ----> 29 20 40 240 ================================================================================ 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: MAY YEAR: 2025 LATITUDE: 41 58 N LONGITUDE: 87 54 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 54.9 TOTAL FOR MONTH: 0.33 1 = FOG OR MIST DPTR FM NORMAL: -1.7 DPTR FM NORMAL: -0.84 2 = FOG REDUCING VISIBILITY HIGHEST: 77 ON 6 GRTST 24HR 0.20 ON 30- 1 TO 1/4 MILE OR LESS LOWEST: 41 ON 8 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 0.0 INCH 5 = HAIL GRTST 24HR 0.0 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: 0 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: 0 0.01 INCH OR MORE: 2 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 2 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 0 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 79 CLEAR (SCALE 0-3) 0 DPTR FM NORMAL 6 PTCLDY (SCALE 4-7) 5 TOTAL FM JUL 1 5272 CLOUDY (SCALE 8-10) 3 DPTR FM NORMAL -546 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL -8 [PRESSURE DATA] TOTAL FM JAN 1 8 HIGHEST SLP M ON M DPTR FM NORMAL -10 LOWEST SLP 29.59 ON 1 [REMARKS]