PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: CHICAGO-OHARE MONTH: JULY YEAR: 2002 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 AVG MX 2MIN DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR ================================================================================ 1 93 75 84 12 0 19 0.00 0.0 0 8.4 17 260 M M 1 21 260 2 93 75 84 12 0 19 0.00 0.0 0 10.2 20 300 M M 1 26 270 3 94 73 84 12 0 19 0.00 0.0 0 7.6 18 240 M M 2 24 260 4 90 69 80 8 0 15 0.19 0.0 0 8.4 18 20 M M 3 26 50 5 81 68 75 3 0 10 0.00 0.0 0 10.0 16 80 M M 4 25 70 6 84 66 75 3 0 10 0.04 0.0 0 5.4 14 90 M M 6 24 70 7 89 64 77 4 0 12 0.00 0.0 0 4.5 13 90 M M 2 22 70 8 93 69 81 8 0 16 0.00 0.0 0 9.2 22 270 M M 4 3 28 260 9 80 68 74 1 0 9 2.08 0.0 0 9.4 24 70 M M 8 138 30 40 10 78 69 74 1 0 9 0.00 0.0 0 13.5 20 90 M M 7 31 70 11 74 63 69 -4 0 4 0.00 0.0 0 12.2 20 100 M M 6 25 80 12 79 57 68 -5 0 3 0.00 0.0 0 5.9 15 50 M M 6 26 70 13 82 57 70 -3 0 5 0.00 0.0 0 5.7 14 60 M M 0 26 60 14 88 56 72 -1 0 7 0.00 0.0 0 4.8 17 50 M M 1 24 70 15 91 60 76 3 0 11 0.00 0.0 0 4.0 13 80 M M 2 20 100 16 89 69 79 5 0 14 0.00 0.0 0 5.0 12 240 M M 2 22 200 17 89 66 78 4 0 13 0.00 0.0 0 5.2 13 260 M M 5 8 18 270 18 92 72 82 8 0 17 0.00 0.0 0 7.2 16 100 M M 4 18 25 70 19 81 67 74 0 0 9 0.00 0.0 0 8.4 15 40 M M 8 18 25 60 20 90 62 76 2 0 11 T 0.0 0 5.2 13 180 M M 4 16 180 21 96 78 87 13 0 22 0.00 0.0 0 9.4 18 240 M M 6 23 240 22 90 76 83 9 0 18 T 0.0 0 9.2 18 310 M M 7 22 310 23 76 63 70 -4 0 5 0.00 0.0 0 13.6 23 20 M M 4 30 50 24 79 63 71 -3 0 6 0.00 0.0 0 8.7 16 60 M M 5 25 50 25 80 65 73 -1 0 8 0.01 0.0 0 7.5 14 170 M M 7 17 180 26 88 69 79 5 0 14 0.00 0.0 0 6.3 14 230 M M 7 18 17 230 27 89 71 80 6 0 15 0.29 0.0 0 9.5 18 210 M M 8 1 29 240 28 88 74 81 7 0 16 0.01 0.0 0 9.9 17 240 M M 6 3 22 250 29 83 71 77 3 0 12 0.06 0.0 0 8.0 17 280 M M 7 13 21 280 30 91 69 80 6 0 15 0.00 0.0 0 6.8 14 240 M M 2 18 240 31 94 69 82 8 0 17 0.00 0.0 0 6.0 10 180 M M 2 14 240 ================================================================================ SM 2684 2093 0 380 2.68 0.0 245.1 M 137 ================================================================================ AV 86.6 67.5 7.9 FASTST PSBL % 4 MAX(MPH) MISC ----> 24 70 31 70 ================================================================================ 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: JULY YEAR: 2002 LATITUDE: 41 58 N LONGITUDE: 87 54 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 77.1 TOTAL FOR MONTH: 2.68 1 = FOG DPTR FM NORMAL: 3.8 DPTR FM NORMAL: -0.83 2 = FOG REDUCING VISIBILITY HIGHEST: 96 ON 21 GRTST 24HR 2.08 ON 9 TO 1/4 MILE OR LESS LOWEST: 56 ON 14 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 0.0 INCH 5 = HAIL 6 = GLAZE OR RIME 7 = BLOWING DUST OR SAND: 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: 7 MAX 90 OR ABOVE: 12 0.10 INCH OR MORE: 3 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 1 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1 [HDD (BASE 65) ] TOTAL THIS MO. 0 CLEAR (SCALE 0-3) 11 DPTR FM NORMAL -6 PTCLDY (SCALE 4-7) 17 SEASONAL TOTAL 0 CLOUDY (SCALE 8-10) 3 DPTR FM NORMAL -6 [CDD (BASE 65) ] TOTAL THIS MO. 380 DPTR FM NORMAL 101 [PRESSURE DATA] SEASONAL TOTAL 681 HIGHEST SLP M ON M DPTR FM NORMAL 185 LOWEST SLP M ON M [REMARKS]