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000
CXUS55 KLOT 011229
CF6ORD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CHICAGO-OHARE IL
                                          MONTH:     SEPTEMBER
                                          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  72  47  60  -8   5   0 0.00  0.0    0  3.4 13  60   M    M   1        24  60
 2  73  50  62  -6   3   0 0.00  0.0    0  5.1 12  40   M    M   1        21  60
 3  75  56  66  -2   0   1 0.00  0.0    0  6.0 13  50   M    M   1 1      24  70
 4  75  54  65  -3   0   0 0.00  0.0    0  4.1 12  50   M    M   1 18     24  60
 5  78  54  66  -1   0   1 0.00  0.0    0  5.3 14  70   M    M   7 18     26  60
 6  77  61  69   2   0   4 0.03  0.0    0  5.3 13  50   M    M   8 18     26  70
 7  77  59  68   1   0   3 0.00  0.0    0  4.0 13  40   M    M   3 18     23  50
 8  78  60  69   3   0   4 0.00  0.0    0  7.3 15  50   M    M   6 1      30  50
 9  78  65  72   6   0   7 0.00  0.0    0  6.9 14  60   M    M   6 18     33 210
10  81  64  73   7   0   8 0.00  0.0    0  6.8 15  60   M    M   3 18      M  M
11  80  61  71   6   0   6 0.00  0.0    0  5.6 14  90   M    M   1 1       M  M
12  79  58  69   4   0   4 0.00  0.0    0  4.8 13  30   M    M   5 128     M  M
13  80  58  69   4   0   4 0.00  0.0    0  3.0 10  70   M    M   3 12      M  M
14  84  58  71   6   0   6 0.00  0.0    0  2.1  9  90   M    M   4        20  80
15  82  64  73   9   0   8 0.00  0.0    0  7.8 18  50   M    M   6        36  50
16  71  59  65   1   0   0 0.00  0.0    0 11.4 21  30   M    M   3        33  50
17  72  50  61  -2   4   0 0.00  0.0    0  4.2 12  40   M    M   3 8      25  50
18  79  50  65   2   0   0 0.00  0.0    0  6.4 15  50   M    M   3 18     28  40
19  76  55  66   3   0   1 0.00  0.0    0  5.9 14 100   M    M   6        23  80
20  73  54  64   2   1   0 0.75  0.0    0  7.9 16  60   M    M   8 1      31  40
21  67  60  64   2   1   0    T  0.0    0  4.6 10 200   M    M   7 18     15 280
22  77  59  68   6   0   3    T  0.0    0  7.7 20 170   M    M   8 18     24 170
23  76  62  69   8   0   4 0.00  0.0    0  4.0 10  50   M    M   9 18     20  40
24  73  64  69   8   0   4 0.00  0.0    0  4.7 10  60   M    M  10 1      25  60
25  70  60  65   4   0   0 0.16  0.0    0  7.3 18 120   M    M   9 18     24 120
26  69  55  62   2   3   0 0.00  0.0    0  4.6 12 310   M    M   8 1      15  10
27  74  50  62   2   3   0 0.08  0.0    0 10.2 26 320   M    M   5 123    36 230
28  62  49  56  -3   9   0 0.01  0.0    0 20.7 30 280   M    M   8        40 310
29  60  48  54  -5  11   0 0.00  0.0    0 10.3 23 310   M    M   9        30 320
30  62  47  55  -4  10   0 0.00  0.0    0  6.8 13  80   M    M   3        30  60
================================================================================
SM 2230 1691        50  68  1.03     0.0 194.2          M      155
================================================================================
AV 74.3 56.4                               6.5 FASTST   M    M   5    MAX(MPH)
                                 MISC ---->  # 30 280               # 40  310
================================================================================
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:    SEPTEMBER
                                          YEAR:     2009
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

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

AVERAGE MONTHLY: 65.3   TOTAL FOR MONTH:   1.03    1 = FOG OR MIST
DPTR FM NORMAL:   1.5   DPTR FM NORMAL:   -2.24    2 = FOG REDUCING VISIBILITY
HIGHEST:    84 ON 14    GRTST 24HR  0.75 ON 20-20      TO 1/4 MILE OR LESS
LOWEST:     47 ON 30, 1                            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:   5
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    50    CLEAR  (SCALE 0-3)   9
DPTR FM NORMAL   -62    PTCLDY (SCALE 4-7)  15
TOTAL FM JUL 1    77    CLOUDY (SCALE 8-10)  6
DPTR FM NORMAL   -50

[CDD (BASE 65) ]
TOTAL THIS MO.    68
DPTR FM NORMAL   -23    [PRESSURE DATA]
TOTAL FM JAN 1   589    HIGHEST SLP 30.36 ON  1
DPTR FM NORMAL  -231    LOWEST  SLP 29.35 ON 27

[REMARKS]
#FINAL-09-09#