000
CXUS55 KLOT 010700
CF6ORD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CHICAGO-OHARE IL
                                          MONTH:     OCTOBER
                                          YEAR:      2009
                                          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  59  41  50  -8  15   0 0.89  0.0    0  9.5 23 110   M    M   7 13     28 120
 2  56  47  52  -6  13   0 0.21  0.0    0 12.0 18 130   M    M   9 18     24 250
 3  57  47  52  -5  13   0 0.11  0.0    0  7.4 15 280   M    M   9 1      20 280
 4  60  45  53  -4  12   0    T  0.0    0  9.2 18 280   M    M   6        23 290
 5  62  43  53  -4  12   0 0.00  0.0    0  5.4 13 100   M    M   3        22  70
 6  61  49  55  -1  10   0 0.03  0.0    0 14.9 33 270   M    M   8 1      47 260
 7  60  45  53  -3  12   0 0.00  0.0    0 10.8 22 290   M    M   5        33 300
 8  53  45  49  -6  16   0 0.12  0.0    0  4.8 15 160   M    M   8 1      18 230
 9  52  39  46  -9  19   0 0.46  0.0    0 10.0 17 340   M    M  10 1      26 320
10  48  31  40 -15  25   0 0.00  0.0    0  7.7 18 270   M    M   4        24 280
11  44  29  37 -17  28   0 0.00  0.0    0  5.0 12 330   M    M   7        23  70
12  48  41  45  -9  20   0 0.02  0.0    0  3.8  9 300   M    M  10 1      21 210
13  47  34  41 -12  24   0 0.00  0.0    0 10.0 17  50   M    M   7        28  40
14  48  42  45  -8  20   0 0.03  0.0    0 11.5 20 100   M    M  10 1      28 120
15  44  41  43 -10  22   0 0.29  0.0    0  9.1 16 100   M    M  10 1      28  60
16  45  39  42 -10  23   0 0.04    T    0  8.2 20  10   M    M   8 14      M  M
17  52  36  44  -8  21   0    T  0.0    0  8.2 16 360   M    M   8        24  30
18  53  31  42  -9  23   0 0.00  0.0    0  6.9 16 210   M    M   3        21 210
19  65  44  55   4  10   0 0.00  0.0    0 11.5 22 220   M    M   4        28 220
20  62  48  55   5  10   0 0.03  0.0    0  5.3 12 190   M    M   9        21 160
21  69  55  62  12   3   0    T  0.0    0 11.5 21 210   M    M   8        28 220
22  58  48  53   3  12   0 1.03  0.0    0 13.0 23  70   M    M  10 1      29  60
23  61  42  52   3  13   0 0.89  0.0    0 16.2 26 220   M    M  10 1      33 210
24  50  38  44  -5  21   0 0.04  0.0    0  8.9 21 250   M    M   7 1      25 290
25  62  44  53   5  12   0 0.27  0.0    0  6.9 16 200   M    M   9 1      20 190
26  55  49  52   4  13   0 0.11  0.0    0  7.5 14 300   M    M  10 1      18 300
27  51  45  48   0  17   0 0.06  0.0    0  6.5 12  60   M    M  10 1      23  60
28  57  50  54   7  11   0 0.00  0.0    0  4.3 13 120   M    M  10 18     15 120
29  60  47  54   7  11   0 0.60  0.0    0 12.7 30 130   M    M  10 18     38 130
30  67  46  57  11   8   0 0.81  0.0    0 17.4 29 230   M    M  10 1      41 240
31  46  35  41  -5  24   0    T  0.0    0 11.5 30 240   0    M   8        39 250
================================================================================
SM 1712 1316       493   0  6.04    T    287.6            0    247
================================================================================
AV 55.2 42.5                               9.3 FASTST    0   M   8    MAX(MPH)
                                 MISC ---->  # 33 270               # 47  260
================================================================================
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 IL
                                          MONTH:    OCTOBER
                                          YEAR:     2009
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 48.8   TOTAL FOR MONTH:   6.04    1 = FOG OR MIST
DPTR FM NORMAL:  -3.3   DPTR FM NORMAL:    3.33    2 = FOG REDUCING VISIBILITY
HIGHEST:    69 ON 21    GRTST 24HR  1.78 ON 22-23      TO 1/4 MILE OR LESS
LOWEST:     29 ON 11                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:    T          5 = HAIL
                        GRTST 24HR    T  ON 16-16  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:  19
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  12
MIN 32 OR BELOW:   3    0.50 INCH OR MORE:   5
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.   493    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL    92    PTCLDY (SCALE 4-7)  13
TOTAL FM JUL 1   570    CLOUDY (SCALE 8-10) 17
DPTR FM NORMAL    42

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL   -10    [PRESSURE DATA]
TOTAL FM JAN 1   589    HIGHEST SLP M ON M
DPTR FM NORMAL  -241    LOWEST  SLP 29.34 ON 23

[REMARKS]
#FINAL-10-09#