000
CXUS55 KLOT 310700
CF6ORD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CHICAGO-OHARE
                                          MONTH:     DECEMBER
                                          YEAR:      2012
                                          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  29  44  11  21   0    T  0.0    0  9.4 25 200   M    M   6 128    31 200
 2  63  44  54  22  11   0 0.06  0.0    0  7.5 20 210   M    M   8 128    27 210
 3  70  46  58  26   7   0    T  0.0    0 13.0 30 200   M    M   9 128    39 200
 4  59  38  49  18  16   0 0.00  0.0    0 10.7 20 330   M    M   6        25  20
 5  40  27  34   3  31   0 0.00  0.0    0  8.4 15 330   M    M   5        23  50
 6  46  32  39   8  26   0    T  0.0    0  8.4 15 180   M    M  10        18 170
 7  46  41  44  14  21   0 0.08  0.0    0  7.2 13 330   M    M  10 1      22  20
 8  42  36  39   9  26   0 0.15  0.0    0 12.1 18  10   M    M  10 1      28  40
 9  41  35  38   9  27   0 0.21    T    0  9.1 20 280   M    M  10 1      24 280
10  38  31  35   6  30   0    T    T    0 11.3 20 250   M    M   9 1      25  10
11  34  24  29   0  36   0    T    T    0 10.2 22 230   M    M   4        29 210
12  46  28  37   9  28   0 0.00  0.0    0 11.1 20 200   M    M   2        24 200
13  49  32  41  13  24   0 0.00  0.0    0 13.5 25 210   M    M   5        32 220
14  50  26  38  10  27   0 0.00  0.0    0  6.2 12 160   M    M   5        12 150
15  50  37  44  16  21   0 0.34  0.0    0 11.3 21 160   M    M  10 1      26 180
16  49  38  44  17  21   0    T  0.0    0 10.3 18 260   M    M  10 1      22 260
17  40  30  35   8  30   0 0.00  0.0    0  5.2 10 350   M    M  10 8      21  30
18  41  31  36   9  29   0    T    T    0  7.5 20 320   M    M  10 18     25 320
19  43  32  38  12  27   0 0.08  0.0    0  8.4 22  90   M    M  10 18     30 100
20  49  33  41  15  24   0 1.26  0.2    0 17.7 33 320   M    M  10 1      45 320
21  33  20  27   1  38   0 0.01  0.1    T 20.5 36 310   M    M   6 1      44 310
22  32  17  25  -1  40   0 0.00  0.0    0  6.5 12 320   M    M   4        15 310
23  34  21  28   2  37   0 0.00  0.0    0  6.7 13  60   M    M   6        30  50
24  34  28  31   5  34   0    T    T    0  9.9 17 340   M    M  10        23  20
25  33  25  29   4  36   0 0.01  0.1    0  9.4 20  60   M    M  10 18     32  50
26  33  28  31   6  34   0    T    T    0 17.2 28  40   M    M  10        35  30
27  33  28  31   6  34   0    T    T    0  7.7 16 340   M    M  10        22  30
28  32  29  31   6  34   0 0.01  0.3    0  4.2 13 160   M    M  10 18     15 160
29  32  20  26   1  39   0    T  0.2    0 12.4 20 290   M    M  10 18     24 280
30  33  14  24  -1  41   0 0.00  0.0    0 12.5 21 210   M    M   4 18     29 210
================================================================================
SM 1284  900       850   0  2.21     0.9 305.5          M      239
================================================================================
AV 42.8 30.0                              10.2 FASTST   M    M   8    MAX(MPH)
                                 MISC ---->  # 36 310               # 45  320
================================================================================
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:    DECEMBER
                                          YEAR:     2012
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

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

AVERAGE MONTHLY: 36.4   TOTAL FOR MONTH:   2.21    1 = FOG OR MIST
DPTR FM NORMAL:   8.5   DPTR FM NORMAL:    0.02    2 = FOG REDUCING VISIBILITY
HIGHEST:    70 ON  3    GRTST 24HR  1.32 ON 19-20      TO 1/4 MILE OR LESS
LOWEST:     14 ON 30                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   0.9 INCH    5 = HAIL
                        GRTST 24HR   0.3 ON   M    6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   T           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:   3    0.01 INCH OR MORE:  10
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   4
MIN 32 OR BELOW:  21    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.   850    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL  -263    PTCLDY (SCALE 4-7)  11
TOTAL FM JUL 1  2100    CLOUDY (SCALE 8-10) 18
DPTR FM NORMAL  -269

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1324    HIGHEST SLP M ON M
DPTR FM NORMAL   481    LOWEST  SLP 29.12 ON 20

[REMARKS]