WFO Monthly/Daily Climate Data
Issued by NWS

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000
CXUS55 KLOT 250700
CF6ORD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CHICAGO-OHARE
                                          MONTH:     SEPTEMBER
                                          YEAR:      2017
                                          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  69  50  60 -10   5   0 0.00  0.0    0 11.8 22  70   M    M   6        27  80
 2  75  50  63  -7   2   0 0.25  0.0    0  4.7 20 330   M    M   5 18     23 330
 3  84  57  71   2   0   6 0.00  0.0    0  7.3 17 310   M    M   3        23 310
 4  82  62  72   3   0   7    T  0.0    0 12.7 24 250   M    M   7 18     31 230
 5  70  54  62  -7   3   0    T  0.0    0 12.5 26 320   M    M   5        31 340
 6  67  49  58 -10   7   0    T  0.0    0 10.2 21 350   M    M   6        24 340
 7  71  52  62  -6   3   0 0.00  0.0    0  8.4 21 270   M    M   8 8      28 290
 8  69  58  64  -4   1   0    T  0.0    0  7.3 16  50   M    M   8        20  40
 9  72  54  63  -4   2   0 0.00  0.0    0  8.2 17  70   M    M   2 8      25  60
10  70  50  60  -7   5   0 0.00  0.0    0  6.2 15  80   M    M   0        20 100
11  75  52  64  -3   1   0 0.00  0.0    0  4.6 13 100   M    M   4 8      16 100
12  77  54  66   0   0   1 0.00  0.0    0  6.9 16  40   M    M   8 1      22  40
13  77  58  68   2   0   3    T  0.0    0  6.4 13 100   M    M   9 18     15 100
14  81  59  70   5   0   5 0.00  0.0    0  5.1 12 170   M    M   5 18     14 180
15  87  62  75  10   0  10 0.00  0.0    0  9.3 16 160   M    M   1 8      20 150
16  88  65  77  12   0  12 0.00  0.0    0  8.4 18 200   M    M   2 18     36 210
17  86  63  75  11   0  10 0.00  0.0    0  7.7 17 320   M    M   6 8      21 270
18  77  58  68   4   0   3 0.00  0.0    0  7.5 14  50   M    M   5        17  40
19  79  64  72   9   0   7 0.07  0.0    0  6.4 15  50   M    M   6 18     17  50
20  92  62  77  14   0  12 0.00  0.0    0 10.7 24 180   M    M   3 1      30 170
21  94  72  83  21   0  18 0.00  0.0    0  5.9 14 190   M    M   8 8      17 210
22  94  71  83  21   0  18 0.00  0.0    0  6.9 15 190   M    M   3 8      22 210
23  95  72  84  23   0  19 0.00  0.0    0  6.0 15  90   M    M   1 8      18 100
24  93  70  82  21   0  17 0.00  0.0    0  6.2 15 110   M    M   1 8      20 200
================================================================================
SM 1924 1418        29 148  0.32     0.0 187.3          M      112
================================================================================
AV 80.2 59.1                               7.8 FASTST   M    M   5    MAX(MPH)
                                 MISC ---->  # 26 320               # 36  210
================================================================================
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:    SEPTEMBER
                                          YEAR:     2017
                                          LATITUDE:   41 58 N
                                          LONGITUDE:  87 54 W

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

AVERAGE MONTHLY: 69.6   TOTAL FOR MONTH:   0.32    1 = FOG OR MIST
DPTR FM NORMAL:   3.8   DPTR FM NORMAL:   -2.29    2 = FOG REDUCING VISIBILITY
HIGHEST:    95 ON 23    GRTST 24HR  0.25 ON  2- 2      TO 1/4 MILE OR LESS
LOWEST:     49 ON  6                               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:   2
MAX 90 OR ABOVE:   5    0.10 INCH OR MORE:   1
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    29    CLEAR  (SCALE 0-3)   8
DPTR FM NORMAL   -36    PTCLDY (SCALE 4-7)  13
TOTAL FM JUL 1    34    CLOUDY (SCALE 8-10)  3
DPTR FM NORMAL   -44

[CDD (BASE 65) ]
TOTAL THIS MO.   148
DPTR FM NORMAL    62    [PRESSURE DATA]
TOTAL FM JAN 1   931    HIGHEST SLP M ON M
DPTR FM NORMAL   105    LOWEST  SLP 29.71 ON  4

[REMARKS]



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