WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA

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000
CXUS51 KLWX 100620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     DECEMBER
                                          YEAR:      2016
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 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  58  44  51  10  14   0 0.07  0.0    0 10.8 25 300   M    M   4 1      31 300
 2  51  41  46   5  19   0 0.00  0.0    0 12.2 25 290   M    M   7        32 300
 3  48  38  43   3  22   0 0.00  0.0    0 14.7 30 290   M    M   6        36 300
 4  45  30  38  -2  27   0 0.10    T    0  4.2 13 290   M    M   7 1      16 160
 5  55  38  47   7  18   0 0.16  0.0    0  6.0 15 320   M    M   9 1      18 340
 6  41  38  40   1  25   0 1.03    T    0  5.9 16 320   M    M  10 14     18 320
 7  50  29  40   1  25   0    T  0.0    0  5.0 16 300   M    M   6 1      21 290
 8  48  29  39   1  26   0 0.00  0.0    0  9.0 26 300   M    M   7        33 310
 9  37  26  32  -6  33   0 0.00  0.0    0 14.3 29 290   M    M   1        35 290
================================================================================
SM  433  313       209   0  1.36    T     82.1          M       57
================================================================================
AV 48.1 34.8                               9.1 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 30 290               # 36  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:  WASHINGTON DULLES DC
                                          MONTH:    DECEMBER
                                          YEAR:     2016
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 41.4   TOTAL FOR MONTH:   1.36    1 = FOG OR MIST
DPTR FM NORMAL:   1.9   DPTR FM NORMAL:    0.38    2 = FOG REDUCING VISIBILITY
HIGHEST:    58 ON  1    GRTST 24HR  1.38 ON 30- 1      TO 1/4 MILE OR LESS
LOWEST:     26 ON  9                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:    T          5 = HAIL
                        GRTST 24HR    T  ON  6- 6  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:   4
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   3
MIN 32 OR BELOW:   4    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.   209    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL   -21    PTCLDY (SCALE 4-7)   6
TOTAL FM JUL 1   936    CLOUDY (SCALE 8-10)  2
DPTR FM NORMAL  -210

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1559    HIGHEST SLP M ON M
DPTR FM NORMAL   381    LOWEST  SLP 29.55 ON  1

[REMARKS]



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