PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: CHICAGO-OHARE MONTH: MAY YEAR: 2005 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 49 35 42 -11 23 0 T 0.0 0 11.9 24 270 M M 7 31 280 2 44 35 40 -14 25 0 T T 0 11.6 18 270 M M 8 4 22 280 3 52 33 43 -11 22 0 0.00 0.0 0 8.5 18 320 M M 6 23 300 4 62 33 48 -6 17 0 0.00 0.0 0 6.9 14 100 M M 0 18 100 5 70 38 54 -1 11 0 0.00 0.0 0 8.7 16 130 M M 1 20 120 6 76 50 63 8 2 0 0.03 0.0 0 9.1 20 230 M M 5 24 260 7 60 45 53 -3 12 0 0.00 0.0 0 7.6 13 60 M M 6 8 23 60 8 85 43 64 8 1 0 0.00 0.0 0 8.0 15 170 M M 7 20 160 9 77 62 70 14 0 5 0.15 0.0 0 11.3 25 180 M M 8 1 32 180 10 82 60 71 14 0 6 0.00 0.0 0 10.7 23 280 M M 2 29 250 11 64 43 54 -3 11 0 0.30 0.0 0 15.9 28 20 M M 9 135 35 20 12 55 42 49 -8 16 0 0.07 0.0 0 15.6 24 130 M M 10 31 140 13 73 49 61 3 4 0 T 0.0 0 8.5 20 140 M M 9 138 23 130 14 64 47 56 -2 9 0 0.06 0.0 0 13.7 30 280 M M 7 1 39 290 15 54 41 48 -10 17 0 0.00 0.0 0 9.9 17 310 M M 7 21 320 16 60 44 52 -7 13 0 0.00 0.0 0 8.1 15 110 M M 7 23 80 17 71 49 60 1 5 0 T 0.0 0 9.5 15 100 M M 7 23 80 18 75 57 66 7 0 1 T 0.0 0 11.5 24 130 M M 8 29 130 19 72 51 62 2 3 0 1.27 0.0 0 8.7 15 20 M M 10 1238 20 70 20 68 47 58 -2 7 0 0.00 0.0 0 11.3 20 30 M M 5 18 28 40 21 73 43 58 -2 7 0 T 0.0 0 3.8 12 110 M M 7 14 90 22 80 57 69 8 0 4 T 0.0 0 11.7 26 300 M M 6 33 310 23 70 52 61 0 4 0 T 0.0 0 12.3 21 340 M M 6 29 30 24 67 47 57 -5 8 0 0.00 0.0 0 9.6 20 40 M M 2 1 28 50 25 69 47 58 -4 7 0 0.00 0.0 0 7.4 14 90 M M 6 23 60 26 75 56 66 4 0 1 T 0.0 0 8.3 20 320 M M 6 26 290 27 70 48 59 -4 6 0 0.10 0.0 0 10.2 32 290 M M 5 38 290 28 68 48 58 -5 7 0 0.01 0.0 0 8.6 21 290 M M 6 26 300 29 70 43 57 -6 8 0 0.00 0.0 0 4.4 15 260 M M 6 21 240 30 74 46 60 -4 5 0 0.00 0.0 0 5.2 17 40 M M 2 23 60 31 72 46 59 -5 6 0 0.00 0.0 0 7.0 15 60 M M 3 28 70 ================================================================================ SM 2101 1437 256 17 1.99 T 295.5 M 184 ================================================================================ AV 67.8 46.4 9.5 FASTST PSBL % 6 MAX(MPH) MISC ----> 32 290 39 290 ================================================================================ 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: 2005 LATITUDE: 41 58 N LONGITUDE: 87 54 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 57.1 TOTAL FOR MONTH: 1.99 1 = FOG DPTR FM NORMAL: -1.6 DPTR FM NORMAL: -1.39 2 = FOG REDUCING VISIBILITY HIGHEST: 85 ON 8 GRTST 24HR 1.27 ON 19-19 TO 1/4 MILE OR LESS LOWEST: 33 ON 4, 3 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: T 5 = HAIL GRTST 24HR T ON 2- 2 6 = GLAZE OR RIME GRTST DEPTH: 0 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: 8 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 4 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. 256 CLEAR (SCALE 0-3) 6 DPTR FM NORMAL 24 PTCLDY (SCALE 4-7) 18 SEASONAL TOTAL 5908 CLOUDY (SCALE 8-10) 7 DPTR FM NORMAL -541 [CDD (BASE 65) ] TOTAL THIS MO. 17 DPTR FM NORMAL -31 [PRESSURE DATA] SEASONAL TOTAL 24 HIGHEST SLP M ON M DPTR FM NORMAL -34 LOWEST SLP M ON M [REMARKS]