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

                                          STATION:   CHICAGO-OHARE IL
                                          MONTH:     JANUARY
                                          YEAR:      2011
                                          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  41  14  28   5  37   0    T    T    0 18.5 29 260   M    M   7        40 260
 2  24  12  18  -5  47   0 0.00  0.0    0 11.0 20 230   M    M   2        25 230
 3  36  22  29   6  36   0 0.00  0.0    0  8.1 15 220   M    M   6        20 210
 4  30  13  22   0  43   0 0.00  0.0    0 10.0 20 280   M    M   3        25 280
 5  31   8  20  -2  45   0    T    T    0  6.0 16 290   M    M   7        20 280
 6  28  18  23   1  42   0    T    T    0 11.4 21 300   M    M   7 18     26 320
 7  22  12  17  -5  48   0 0.02  0.6    0 11.0 21 340   M    M  10 1      24 320
 8  24   9  17  -5  48   0    T    T    0 14.0 22 320   M    M   3        28 340
 9  31   9  20  -2  45   0 0.00  0.0    0  3.1 10 270   M    M   4 8      15  60
10  33  18  26   4  39   0 0.00  0.0    0  7.8 18 110   M    M   9        26  80
11  27  22  25   3  40   0 0.31  5.9    0 10.7 20 330   M    M  10 12     25 320
12  26  20  23   1  42   0    T    T    0 12.5 21 330   M    M   9        25 340
13  24  15  20  -1  45   0    T    T    3  6.6 13 200   M    M   9 1      16 200
14  24  16  20  -1  45   0 0.01  0.1    2  5.7 15 230   M    M  10 1      20 240
15  24  13  19  -2  46   0    T    T    2 11.6 20 310   M    M   8 18     24 320
16  22   6  14  -7  51   0    T    T    2  4.6 14 340   M    M   8 1      26 360
17  32  18  25   4  40   0 0.31  0.9    2 12.1 24 190   M    M  10 1468   31 170
18  32  19  26   5  39   0 0.10  0.3    2 11.0 20 340   M    M  10 18     26 360
19  23  15  19  -3  46   0    T    T    2  8.6 16 340   M    M   9 18     18 340
20  19   5  12 -10  53   0    T    T    2 10.7 23 310   M    M   9 8      31 330
21   8  -4   2 -20  63   0 0.00  0.0    1  8.0 18 330   M    M   4        23 320
22  17   5  11 -11  54   0 0.01  0.7    2 10.5 17 320   M    M   9 1      22  20
23  20   4  12 -10  53   0 0.01  0.3    0  9.1 17 150   M    M   8 18     20 160
24  27  15  21  -1  44   0 0.03  0.5    2  9.6 16 250   M    M  10 1      22 240
25  29  21  25   3  40   0    T  0.0    2  5.0 10 260   M    M  10 18     14 260
26  28  18  23   1  42   0    T  0.2    2  7.1 13 330   M    M  10 18     18 310
27  25  17  21  -1  44   0 0.03  0.6    2  9.9 16 230   M    M  10 18     21 200
28  31  19  25   3  40   0    T    T    2  8.4 21 200   M    M   9 18     25 190
29  33  26  30   7  35   0    T    T    2  6.9 20 320   M    M  10 18     24 330
30  30  26  28   5  37   0    T    T    2 10.6 17  60   M    M  10 16      M  M
31  26  20  23   0  42   0 0.09  1.0    2 15.4 22  60   M    M  10 1      30  50
================================================================================
SM  827  451      1371   0  0.92    11.1 295.5          M      250
================================================================================
AV 26.7 14.5                               9.5 FASTST   M    M   8    MAX(MPH)
                                 MISC ---->  # 29 260               # 40  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:    JANUARY
                                          YEAR:     2011
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

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

AVERAGE MONTHLY: 20.6   TOTAL FOR MONTH:   0.92    1 = FOG OR MIST
DPTR FM NORMAL:  -1.4   DPTR FM NORMAL:   -0.83    2 = FOG REDUCING VISIBILITY
HIGHEST:    41 ON  1    GRTST 24HR  0.68 ON 31- 1      TO 1/4 MILE OR LESS
LOWEST:     -4 ON 21                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  11.1 INCHES  5 = HAIL
                        GRTST 24HR   5.9 ON   M    6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   3 ON 13     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:  27    0.01 INCH OR MORE:  10
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   3
MIN 32 OR BELOW:  31    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   1    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.  1371    CLEAR  (SCALE 0-3)   3
DPTR FM NORMAL    38    PTCLDY (SCALE 4-7)   8
TOTAL FM JUL 1  3733    CLOUDY (SCALE 8-10) 20
DPTR FM NORMAL   -38

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1     0    HIGHEST SLP M ON M
DPTR FM NORMAL     0    LOWEST  SLP 29.45 ON  7

[REMARKS]
#FINAL-01-11#