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

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000
CXUS51 KLWX 220620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     JANUARY
                                          YEAR:      2019
                                          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  62  40  51  18  14   0 0.00  0.0    0 12.2 30 310   M    M   8 12     37 320
 2  45  37  41   8  24   0 0.00  0.0    0  4.6 12 150   M    M  10        16 140
 3  49  30  40   7  25   0 0.00  0.0    M  5.0 21 320   M    M   8        27 320
 4  46  28  37   4  28   0 0.03  0.0    0  3.7 13 190   M    M  10 18     15 180
 5  53  40  47  14  18   0 0.11  0.0    0  8.9 25 310   M    M   6 1      31 310
 6  54  29  42   9  23   0 0.00  0.0    0  8.7 26 320   M    M   2        37 310
 7  39  30  35   2  30   0    T  0.0    0  6.7 16 160   M    M   9        23 160
 8  59  36  48  15  17   0 0.11  0.0    0  7.8 32 310   M    M   8 1      39 310
 9  51  30  41   8  24   0    T    T    0 19.9 33 300   M    M   8        44 280
10  35  27  31  -2  34   0 0.00  0.0    0 20.9 35 310   M    M   5        48 300
11  36  24  30  -3  35   0 0.00  0.0    0 10.7 24 330   M    M   3        30 330
12  34  23  29  -4  36   0 0.22  2.9    0  2.9  9 200   M    M  10 1      12 140
13  30  27  29  -4  36   0 0.66  7.7    5  8.2 15 360   M    M  10 1      18 360
14  34  15  25  -8  40   0    T    T    8  5.0 14  10   M    M   6 1      17  10
15  37   9  23 -10  42   0 0.00  0.0    6  3.6 15 300   M    M   2 1      19 320
16  41  12  27  -6  38   0 0.00  0.0    5  4.9 21 300   M    M   5 1      29 300
17  36  28  32  -1  33   0 0.12  1.5    4  4.6 12 130   M    M  10 1      14 130
18  43  30  37   4  28   0 0.02  0.3    5  1.7 10 190   M    M   9 12     11 190
19  37  30  34   1  31   0 0.84  0.0    2  5.2 13 100   M    M  10 1      18 100
20  40  16  28  -5  37   0 0.24  0.0    0 19.0 37 310   M    M   8 1      49 320
21  21  12  17 -16  48   0 0.00  0.0    T 18.9 36 310   M    M   3        46 310
================================================================================
SM  882  553       641   0  2.35    12.4 183.1          M      150
================================================================================
AV 42.0 26.3                               8.7 FASTST   M    M   7    MAX(MPH)
                                 MISC ---->  # 37 310               # 49  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:  WASHINGTON DULLES DC
                                          MONTH:    JANUARY
                                          YEAR:     2019
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 34.2   TOTAL FOR MONTH:   2.35    1 = FOG OR MIST
DPTR FM NORMAL:   1.2   DPTR FM NORMAL:    0.58    2 = FOG REDUCING VISIBILITY
HIGHEST:    62 ON  1    GRTST 24HR  0.84 ON 19-19      TO 1/4 MILE OR LESS
LOWEST:      9 ON 15                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:  12.4 INCHES  5 = HAIL
                        GRTST 24HR   7.7 ON 13-13  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   8 ON 14     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:   2    0.01 INCH OR MORE:   9
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   7
MIN 32 OR BELOW:  17    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   641    CLEAR  (SCALE 0-3)   4
DPTR FM NORMAL   -31    PTCLDY (SCALE 4-7)   7
TOTAL FM JUL 1  2403    CLOUDY (SCALE 8-10) 10
DPTR FM NORMAL   -67

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1     0    HIGHEST SLP M ON M
DPTR FM NORMAL     0    LOWEST  SLP 29.30 ON 20

[REMARKS]


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