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

                                          STATION:   CHICAGO-OHARE IL
                                          MONTH:     MAY
                                          YEAR:      2010
                                          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  70  58  64  11   1   0 0.11  0.0    0  9.4 20 240   M    M   8 1      25 230
 2  69  53  61   7   4   0 0.93  0.0    0  6.1 16 280   M    M   7 1      22 280
 3  72  50  61   7   4   0 0.00  0.0    0  9.4 21 230   M    M   3        30 290
 4  79  50  65  11   0   0 0.00  0.0    0 14.2 28 220   M    M   4        36 230
 5  72  56  64   9   1   0    T  0.0    0 12.8 25 290   M    M   5        33 250
 6  63  46  55   0  10   0 0.01  0.0    0  9.1 17  50   M    M   5 3      24  60
 7  59  45  52  -4  13   0 0.72  0.0    0 13.2 32 120   M    M   8 138    38 130
 8  50  42  46 -10  19   0 0.02  0.0    0 15.2 30 280   M    M   9 1      39 270
 9  58  38  48  -8  17   0 0.00  0.0    0  6.4 14 100   M    M   4        22  70
10  58  41  50  -7  15   0    T  0.0    0 14.2 30 120   M    M   8        36 130
11  52  44  48  -9  17   0 0.97  0.0    0  9.9 29 120   M    M   9 1      37 110
12  51  44  48  -9  17   0 0.12  0.0    0 10.4 21 100   M    M  10 1238   25  60
13  73  48  61   3   4   0 1.49  0.0    0 12.3 26 260   M    M   7 13     38 270
14  66  47  57  -1   8   0 0.00  0.0    0 11.2 23 280   M    M   5        30 260
15  61  43  52  -6  13   0 0.00  0.0    0  5.8 13  40   M    M   8         M  M
16  66  41  54  -5  11   0 0.00  0.0    0 10.1 18  50   M    M   7        35  60
17  58  50  54  -5  11   0 0.01  0.0    0  9.8 17  20   M    M  10        26  50
18  65  46  56  -3   9   0 0.00  0.0    0  9.8 30  40   M    M   8        39  40
19  74  44  59  -1   6   0 0.00  0.0    0  6.4 16  40   M    M   3        30  50
20  74  47  61   1   4   0 0.05  0.0    0  7.8 22 110   M    M   9        26 110
21  73  56  65   5   0   0 0.21  0.0    0  6.3 18 150   M    M   9 18     22 150
22  74  58  66   5   0   1 0.00  0.0    0  5.4 15 130   M    M   9 128    20 100
23  89  62  76  15   0  11 0.00  0.0    0 10.0 21 190   M    M   5        25 190
24  91  70  81  19   0  16 0.00  0.0    0  8.2 16 100   M    M   2 1      22  80
25  88  69  79  17   0  14 0.00  0.0    0  7.8 18 120   M    M   5 8      23 130
26  87  66  77  15   0  12    T  0.0    0  4.5 21 280   M    M   7 3      30 280
27  77  61  69   6   0   4 0.00  0.0    0 10.7 20  40   M    M   5        28  50
28  79  57  68   5   0   3 0.00  0.0    0  8.4 17  40   M    M   2        38  50
29  86  59  73  10   0   8 0.00  0.0    0  5.8 13  60   M    M   2        23  50
30  91  61  76  12   0  11 0.00  0.0    0  5.9 15 200   M    M   3        18 160
31  81  66  74  10   0   9 0.26  0.0    0  4.7 31 340   M    M   7 13     45 330
================================================================================
SM 2206 1618       184  89  4.90     0.0 281.2          M      193
================================================================================
AV 71.2 52.2                               9.1 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 32 120               # 45  330
================================================================================
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:    MAY
                                          YEAR:     2010
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

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

AVERAGE MONTHLY: 61.7   TOTAL FOR MONTH:   4.90    1 = FOG OR MIST
DPTR FM NORMAL:   3.0   DPTR FM NORMAL:    1.52    2 = FOG REDUCING VISIBILITY
HIGHEST:    91 ON 30,24 GRTST 24HR  1.61 ON 12-13      TO 1/4 MILE OR LESS
LOWEST:     38 ON  9                               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:  12
MAX 90 OR ABOVE:   2    0.10 INCH OR MORE:   8
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   4
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.   184    CLEAR  (SCALE 0-3)   5
DPTR FM NORMAL   -48    PTCLDY (SCALE 4-7)  18
TOTAL FM JUL 1  5964    CLOUDY (SCALE 8-10)  8
DPTR FM NORMAL  -485

[CDD (BASE 65) ]
TOTAL THIS MO.    89
DPTR FM NORMAL    41    [PRESSURE DATA]
TOTAL FM JAN 1   112    HIGHEST SLP M ON M
DPTR FM NORMAL    54    LOWEST  SLP 29.49 ON  1

[REMARKS]
#FINAL-05-10#