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

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000
CXUS51 KLWX 290620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     MAY
                                          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  64  50  57  -2   8   0    T  0.0    0  5.9 12  10   M    M   9        25 200
 2  75  49  62   3   3   0 0.00  0.0    0  4.8 18  30   M    M   6        23  30
 3  80  43  62   2   3   0 0.00  0.0    0  3.6 13 300   M    M   3        21 270
 4  84  52  68   8   0   3 0.00  0.0    0  7.6 20 210   M    M   3        25 230
 5  85  58  72  12   0   7 0.02  0.0    0  4.0  8 190   M    M   5 3       9 210
 6  83  56  70  10   0   5 0.04  0.0    0  4.4 24 100   M    M   5 123    28 100
 7  80  57  69   8   0   4 0.00  0.0    0  4.2  9 180   M    M   5        15 190
 8  83  55  69   8   0   4 0.00  0.0    0  3.4 10 150   M    M   5 1      15 150
 9  79  58  69   8   0   4 0.00  0.0    0  5.6 13 150   M    M   6 1      17 150
10  82  64  73  12   0   8 0.00  0.0    0  5.5 12 190   M    M   6 1      16 160
11  83  64  74  12   0   9 0.01  0.0    0  4.1 12  50   M    M   7 18     15 150
12  87  66  77  15   0  12    T  0.0    0  9.3 24 310   M    M   7        32 320
13  70  51  61  -1   4   0 0.00  0.0    0 14.4 24 300   M    M   7        32 290
14  70  46  58  -4   7   0 0.00  0.0    0  5.2 13 360   M    M   4        16 360
15  77  52  65   2   0   0 0.00  0.0    0  7.2 15 180   M    M   7        21 190
16  87  63  75  12   0  10 0.70  0.0    0  5.0 35 310   M    M   8 13     40 310
17  83  61  72   9   0   7    T  0.0    0  3.0 10 270   M    M   8 1      14 250
18  89  68  79  15   0  14 0.38  0.0    0  3.3 20 290   M    M   7 13     31 280
19  87  66  77  13   0  12 0.00  0.0    0  6.6 16 310   M    M   5 128    22 330
20  71  57  64   0   1   0 0.00  0.0    0 12.2 24 320   M    M   5        31 310
21  58  50  54 -10  11   0 0.26  0.0    0  3.9 15 310   M    M  10 1      20 300
22  75  46  61  -4   4   0 0.00  0.0    0 10.4 23 290   M    M   2        28 300
23  73  42  58  -7   7   0 0.00  0.0    0  4.2 14 320   M    M   2        17 320
24  81  48  65   0   0   0 0.00  0.0    0  4.3 12 210   M    M   3        16 200
25  83  61  72   6   0   7 0.00  0.0    0  9.9 23 210   M    M   3        36 190
26  87  62  75   9   0  10    T  0.0    0  7.5 15 190   M    M   5        21 190
27  86  67  77  11   0  12 1.05  0.0    0  6.4 18 330   M    M   7 13     24 330
28  89  66  78  11   0  13 0.00  0.0    0  3.2 16 220   M    M   7 1      20 220
================================================================================
SM 2231 1578        48 141  2.46     0.0 169.1          M      157
================================================================================
AV 79.7 56.4                               6.0 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 35 310               # 40  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:    MAY
                                          YEAR:     2015
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 68.0   TOTAL FOR MONTH:   2.46    1 = FOG OR MIST
DPTR FM NORMAL:   5.3   DPTR FM NORMAL:   -1.63    2 = FOG REDUCING VISIBILITY
HIGHEST:    89 ON 28,18 GRTST 24HR  1.05 ON 27-27      TO 1/4 MILE OR LESS
LOWEST:     42 ON 23                               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:   7
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   4
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.    48    CLEAR  (SCALE 0-3)   5
DPTR FM NORMAL   -77    PTCLDY (SCALE 4-7)  21
TOTAL FM JUL 1  5115    CLOUDY (SCALE 8-10)  2
DPTR FM NORMAL   418

[CDD (BASE 65) ]
TOTAL THIS MO.   141
DPTR FM NORMAL    81    [PRESSURE DATA]
TOTAL FM JAN 1   144    HIGHEST SLP M ON M
DPTR FM NORMAL    64    LOWEST  SLP 29.83 ON M

[REMARKS]


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