WFO Monthly/Daily Climate Data
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CXUS53 KLSX 151600
CF6CPS
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   CAHOKIA/ST. LOUIS
                                          MONTH:     DECEMBER
                                          YEAR:      2017
                                          LATITUDE:   38 34 N
                                          LONGITUDE:  90  9 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  57  23  40   2  25   0 0.00  0.0    0  3.1  9 150   M    M   0        13 160
 2  63  32  48  10  17   0 0.00  0.0    0  1.8  7 260   M    M   2 8       9 260
 3  67  31  49  11  16   0 0.00  0.0    0  7.1 16 150   M    M   0        20 140
 4  69  51  60  23   5   0 0.26  0.0    0 13.8 26 300   M    M   5 13     33 290
 5  51  34  43   6  22   0 0.00  0.0    0 10.9 26 300   M    M   0        33 300
 6  48  33  41   4  24   0 0.00  0.0    0  9.7 22 330   M    M   3        27 330
 7  37  22  30  -6  35   0 0.00  0.0    0 12.6 28 320   M    M   5        33 320
 8  39  14  27  -9  38   0 0.00  0.0    0  4.3 10 240   M    M   0        16 260
 9  37  25  31  -5  34   0 0.00  0.0    0 12.5 25 330   M    M   6        35 300
10  52  20  36   1  29   0 0.00  0.0    0  6.3 17 300   M    M   0        27 250
11  62  24  43   8  22   0 0.00  0.0    0 12.8 32 310   M    M   3        44 290
12  42  20  31  -4  34   0 0.00  0.0    0 12.3 29 310   M    M   4        39 310
13  58  21  40   5  25   0 0.00  0.0    0 13.0 33 310   M    M   1        46 300
14  40  27  34   0  31   0 0.00  0.0    0  8.7 26 330   M    M  10        33 330
================================================================================
SM  722  377       357   0  0.26     0.0 128.9          M       39
================================================================================
AV 51.6 26.9                               9.2 FASTST   M    M   3    MAX(MPH)
                                 MISC ---->  # 33 310               # 46  300
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES

COLUMN 17 PEAK WIND IN M.P.H.

PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2

                                          STATION:  CAHOKIA/ST. LOUIS
                                          MONTH:    DECEMBER
                                          YEAR:     2017
                                          LATITUDE:   38 34 N
                                          LONGITUDE:  90  9 W

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

AVERAGE MONTHLY: 39.3   TOTAL FOR MONTH:   0.26    1 = FOG OR MIST
DPTR FM NORMAL:   3.0   DPTR FM NORMAL:   -1.29    2 = FOG REDUCING VISIBILITY
HIGHEST:    69 ON  4    GRTST 24HR  0.26 ON  4- 4      TO 1/4 MILE OR LESS
LOWEST:     14 ON  8                               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:   1
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   1
MIN 32 OR BELOW:  11    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   357    CLEAR  (SCALE 0-3)   9
DPTR FM NORMAL   -46    PTCLDY (SCALE 4-7)   4
TOTAL FM JUL 1  1055    CLOUDY (SCALE 8-10)  1
DPTR FM NORMAL  -278

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1695    HIGHEST SLP M ON M
DPTR FM NORMAL   374    LOWEST  SLP 29.56 ON 13

[REMARKS]



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