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

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000
CXUS51 KLWX 270620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     APRIL
                                          YEAR:      2015
                                          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  31  45  -5  20   0 0.00  0.0    0  6.5 16 300   M    M   1        22 300
 2  72  33  53   3  12   0 0.00  0.0    0 14.3 26 210   M    M   4        37 210
 3  70  59  65  15   0   0 0.22  0.0    0 12.4 32 220   M    M   8 1      43 200
 4  64  34  49  -2  16   0    T  0.0    0 18.1 38 300   M    M   3        49 290
 5  65  34  50  -1  15   0 0.00  0.0    0  9.9 23 210   M    M   4        30 220
 6  76  40  58   7   7   0 0.00  0.0    0  9.6 22 190   M    M   4        28 190
 7  73  55  64  12   1   0 0.13  0.0    0  4.7 16  90   M    M   9 1      20  80
 8  58  43  51  -1  14   0 0.05  0.0    0  7.3 26 110   M    M  10 18     33  90
 9  48  42  45  -7  20   0 0.04  0.0    0  5.7 13 130   M    M  10 18     17 140
10  67  43  55   2  10   0 0.02  0.0    0  5.8 24 310   M    M   9 18     30 310
11  64  39  52  -1  13   0 0.00  0.0    0 11.1 28 300   M    M   3        36 310
12  69  32  51  -2  14   0 0.00  0.0    0  4.1 14 210   M    M   2        21 210
13  78  44  61   7   4   0 0.00  0.0    0  9.7 22 180   M    M   5        30 200
14  66  51  59   5   6   0 0.50  0.0    0  7.0 18 360   M    M   9 1      23  10
15  65  43  54   0  11   0    T  0.0    0  4.7 13 350   M    M   7        15 340
16  71  43  57   2   8   0 0.08  0.0    0  7.1 17 150   M    M   7 1      22 170
17  79  54  67  12   0   2 0.02  0.0    0  3.6 12 200   M    M   7 18     15 210
18  80  50  65  10   0   0 0.00  0.0    0  3.3 13 300   M    M   5        24 220
19  67  51  59   3   6   0 0.29  0.0    0 12.0 22  90   M    M   8 1      30 100
20  78  53  66  10   0   1 0.74  0.0    0  9.2 25 100   M    M   8 13     32 100
21  67  45  56   0   9   0    T  0.0    0  9.9 26 290   M    M   4 3      35 310
22  70  43  57   1   8   0    T  0.0    0 11.5 30 300   M    M   5        37 310
23  55  35  45 -12  20   0 0.00  0.0    0 11.7 29 300   M    M   6        36 310
24  60  38  49  -8  16   0 0.00  0.0    0 12.9 29 310   M    M   4        36 310
25  50  35  43 -14  22   0 0.30    M    0  4.6 12 330   M    M   9 1      15 210
26  63  40  52  -6  13   0 0.00  0.0    0  5.9 16 360   M    M   6 1      20 360
================================================================================
SM 1733 1110       265   3  2.39     0.0 222.6          M      157
================================================================================
AV 66.7 42.7                               8.6 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 38 300               # 49  290
================================================================================
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:    APRIL
                                          YEAR:     2015
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 54.7   TOTAL FOR MONTH:   2.39    1 = FOG OR MIST
DPTR FM NORMAL:   0.9   DPTR FM NORMAL:   -0.61    2 = FOG REDUCING VISIBILITY
HIGHEST:    80 ON 18    GRTST 24HR  0.89 ON 19-20      TO 1/4 MILE OR LESS
LOWEST:     31 ON  1                               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:  11
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   6
MIN 32 OR BELOW:   2    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.   265    CLEAR  (SCALE 0-3)   3
DPTR FM NORMAL   -42    PTCLDY (SCALE 4-7)  16
TOTAL FM JUL 1  5027    CLOUDY (SCALE 8-10)  7
DPTR FM NORMAL   483

[CDD (BASE 65) ]
TOTAL THIS MO.     3
DPTR FM NORMAL   -11    [PRESSURE DATA]
TOTAL FM JAN 1     3    HIGHEST SLP M ON M
DPTR FM NORMAL   -14    LOWEST  SLP 29.50 ON 20

[REMARKS]



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