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

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000
CXUS51 KLWX 160620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     OCTOBER
                                          YEAR:      2018
                                          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  84  61  73  12   0   8 0.00  0.0    0  5.5 10 150   M    M   3        14 200
 2  84  65  75  14   0  10 0.00  0.0    0  7.2 15 190   M    M   7        19 220
 3  86  65  76  15   0  11 0.00  0.0    0  3.9 15 290   M    M   6 1      20 270
 4  89  63  76  16   0  11 0.00  0.0    0  3.6 13 190   M    M   6 12     17 190
 5  76  62  69   9   0   4    T  0.0    0  6.8 15  10   M    M   8 1      19 360
 6  72  63  68   9   0   3 0.00  0.0    0  4.2 12 200   M    M   9 1      13 210
 7  84  68  76  17   0  11 0.00  0.0    0  3.8  9 210   M    M   5 12     12 220
 8  84  66  75  16   0  10 0.00  0.0    0  4.2 14 160   M    M   5 12     19 140
 9  82  69  76  18   0  11 0.00  0.0    0  4.7 13 160   M    M   7 1      17 170
10  83  69  76  18   0  11 0.01  0.0    0  6.5 15 200   M    M   9 1      18 210
11  80  64  72  14   0   7 0.95  0.0    0  9.8 28 330   M    M  10 13     37 340
12  64  49  57   0   8   0 0.00  0.0    0 12.9 28 320   M    M   4 18     38 320
13  58  41  50  -7  15   0 0.06  0.0    0  6.5 22 320   M    M   7 18     29 300
14  57  40  49  -7  16   0 0.04  0.0    0  3.4  9 200   M    M   9 1      12 200
15  70  54  62   6   3   0 0.15  0.0    0 10.4 23 310   M    M   9 1      32 310
================================================================================
SM 1153  899        42  97  1.21     0.0  93.4          M      104
================================================================================
AV 76.9 59.9                               6.2 FASTST   M    M   7    MAX(MPH)
                                 MISC ---->  # 28 330               # 38  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:    OCTOBER
                                          YEAR:     2018
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 68.4   TOTAL FOR MONTH:   1.21    1 = FOG OR MIST
DPTR FM NORMAL:   9.7   DPTR FM NORMAL:   -0.37    2 = FOG REDUCING VISIBILITY
HIGHEST:    89 ON  4    GRTST 24HR  0.95 ON 11-11      TO 1/4 MILE OR LESS
LOWEST:     40 ON 14                               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:   5
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    42    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL   -68    PTCLDY (SCALE 4-7)   9
TOTAL FM JUL 1    55    CLOUDY (SCALE 8-10)  5
DPTR FM NORMAL  -113

[CDD (BASE 65) ]
TOTAL THIS MO.    97
DPTR FM NORMAL    81    [PRESSURE DATA]
TOTAL FM JAN 1  1522    HIGHEST SLP M ON M
DPTR FM NORMAL   349    LOWEST  SLP 29.49 ON 11

[REMARKS]


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