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

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
997
CXUS51 KLWX 170620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     OCTOBER
                                          YEAR:      2017
                                          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  69  44  57  -4   8   0 0.00  0.0    0  3.5  9 360   M    M   1        13  40
 2  74  40  57  -4   8   0 0.00  0.0    0  1.4  9 170   M    M   2        13 200
 3  74  44  59  -2   6   0 0.00  0.0    0  2.8 10  80   M    M   2        15 100
 4  79  44  62   2   3   0 0.00  0.0    0  4.6 14 190   M    M   1 1      19 170
 5  85  51  68   8   0   3 0.00  0.0    0  3.7 13 180   M    M   6 3      16 180
 6  85  57  71  12   0   6 0.00  0.0    0  2.7 12 180   M    M   7        14 180
 7  85  56  71  12   0   6 0.00  0.0    0  9.0 21 180   M    M   6 8      26 190
 8  83  73  78  19   0  13 0.09  0.0    0  8.4 15 200   M    M   9 1      21 200
 9  87  69  78  20   0  13 0.52  0.0    0 10.4 21 200   M    M   8 1      31 160
10  87  64  76  18   0  11 0.00  0.0    0  2.6  9  80   M    M   7 1      12  90
11  75  65  70  12   0   5 0.79  0.0    0  6.8 15 110   M    M  10 1      20 100
12  66  58  62   5   3   0    T  0.0    0  9.3 16  70   M    M   9 1      24  70
13  64  58  61   4   4   0    T  0.0    0  5.7  9  70   M    M  10 1      12  60
14  73  61  67  11   0   2 0.00  0.0    0  4.0  8 160   M    M   7 1      10 170
15  79  61  70  14   0   5    T  0.0    0  9.6 21 330   M    M   7 1      27 210
16  70  48  59   3   6   0 0.08  0.0    0 12.9 24 310   M    M   6 1      32 320
================================================================================
SM 1235  893        38  64  1.48     0.0  97.4          M       98
================================================================================
AV 77.2 55.8                               6.1 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 24 310               # 32  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:     2017
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 66.5   TOTAL FOR MONTH:   1.48    1 = FOG OR MIST
DPTR FM NORMAL:   8.0   DPTR FM NORMAL:   -0.20    2 = FOG REDUCING VISIBILITY
HIGHEST:    87 ON 10, 9 GRTST 24HR  0.79 ON 11-11      TO 1/4 MILE OR LESS
LOWEST:     40 ON  2                               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:   4
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   2
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   2
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    38    CLEAR  (SCALE 0-3)   4
DPTR FM NORMAL   -82    PTCLDY (SCALE 4-7)   8
TOTAL FM JUL 1    79    CLOUDY (SCALE 8-10)  4
DPTR FM NORMAL   -99

[CDD (BASE 65) ]
TOTAL THIS MO.    64
DPTR FM NORMAL    48    [PRESSURE DATA]
TOTAL FM JAN 1  1280    HIGHEST SLP M ON M
DPTR FM NORMAL   107    LOWEST  SLP 29.85 ON M

[REMARKS]



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.