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

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439
CXUS51 KLWX 040915
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     DECEMBER
                                          YEAR:      2024
                                          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  43  20  32  -9  33   0    T    T    0  4.1 15 330   M    M   8        22 340
 2  41  19  30 -11  35   0 0.00  0.0    0  8.0 20 310   M    M   1        24 320
 3  42  21  32  -9  33   0 0.00  0.0    0 10.1 22 300   M    M   1        29 310
================================================================================
SM  126   60       101   0     T    T     22.2          M       10
================================================================================
AV 42.0 20.0                               7.4 FASTST   M    M   3    MAX(MPH)
                                 MISC ---->    22 300                 29 310
================================================================================
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:      2024
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 31.0   TOTAL FOR MONTH:      T    1 = FOG OR MIST
DPTR FM NORMAL: -10.0   DPTR FM NORMAL:   -0.34    2 = FOG REDUCING VISIBILITY
HIGHEST:    43 ON  1    GRTST 24HR     T ON  1- 1      TO 1/4 MILE OR LESS
LOWEST:     19 ON  2                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  T            5 = HAIL
                        GRTST 24HR   T   ON  1- 1  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:   0
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   0
MIN 32 OR BELOW:   3    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   101    CLEAR  (SCALE 0-3)   2
DPTR FM NORMAL    29    PTCLDY (SCALE 4-7)   1
TOTAL FM JUL 1   769    CLOUDY (SCALE 8-10)  0
DPTR FM NORMAL  -203

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1586    HIGHEST SLP M ON M
DPTR FM NORMAL   355    LOWEST  SLP 30.08 ON  1

[REMARKS]