WFO Monthly/Daily Climate Data
Issued by NWS

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CXUS53 KDMX 170920
CF6MIW
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   MARSHALLTOWN IA
                                          MONTH:     DECEMBER
                                          YEAR:      2017
                                          LATITUDE:   42  6 N
                                          LONGITUDE:  92 55 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  55  22  39  11  26   0 0.00  0.0    0  7.9 23 200   M    M   0        29 200
 2  56  23  40  12  25   0 0.00  0.0    0  3.3 13 320   M    M   0 18     15 310
 3  60  22  41  14  24   0 0.00  0.0    0 11.5 25 160   M    M   2        31 160
 4  68  31  50  24  15   0    T  0.0    0 23.4 41 290   M    M   9 8      51 290
 5  32  23  28   2  37   0    T    M    0 19.1 37 290   M    M   4 1      46 290
 6  33  18  26   0  39   0    T    M    0 16.2 32 310   M    M   6 1      41 310
 7  25  12  19  -6  46   0    T    M    0 12.6 21 290   M    M   1 1      27 330
 8  39  14  27   2  38   0 0.00  0.0    0 11.7 23 260   M    M   5        31 270
 9  29  16  23  -1  42   0 0.00  0.0    0 13.5 24 340   M    M   5        30 320
10  41  21  31   7  34   0 0.00  0.0    0 10.6 24 320   M    M   2        29 320
11  43  23  33   9  32   0 0.01  0.0    0 17.4 33 330   M    M   6 1      42 330
12  30   9  20  -3  45   0 0.00  0.0    0 11.7 23 330   M    M   2        29 330
13  44  25  35  12  30   0 0.01    M    0 23.5 44 310   M    M   6 1      52 320
14  29  22  26   4  39   0 0.00  0.0    0  6.0 13 310   M    M  10        17 310
15  45  19  32  10  33   0 0.00  0.0    0 12.5 23 260   M    M   7        29 250
16  52  27  40  18  25   0 0.00  0.0    0  7.4 15 210   M    M   0        21 210
================================================================================
SM  681  327       530   0  0.02     0.0 208.3          M       65
================================================================================
AV 42.6 20.4                              13.0 FASTST   M    M   4    MAX(MPH)
                                 MISC ---->  # 44 310               # 52  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:  MARSHALLTOWN IA
                                          MONTH:    DECEMBER
                                          YEAR:     2017
                                          LATITUDE:   42  6 N
                                          LONGITUDE:  92 55 W

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

AVERAGE MONTHLY: 31.5   TOTAL FOR MONTH:   0.02    1 = FOG OR MIST
DPTR FM NORMAL:   6.8   DPTR FM NORMAL:   -0.60    2 = FOG REDUCING VISIBILITY
HIGHEST:    68 ON  4    GRTST 24HR  0.01 ON 13-13      TO 1/4 MILE OR LESS
LOWEST:      9 ON 12                               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:   5    0.01 INCH OR MORE:   2
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   0
MIN 32 OR BELOW:  16    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   530    CLEAR  (SCALE 0-3)   7
DPTR FM NORMAL  -113    PTCLDY (SCALE 4-7)   7
TOTAL FM JUL 1  1821    CLOUDY (SCALE 8-10)  2
DPTR FM NORMAL  -318

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1   794    HIGHEST SLP  0.00 ON  6
DPTR FM NORMAL    66    LOWEST  SLP 29.36 ON  4

[REMARKS]


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