National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS51 KLWX 010620
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     JULY
                                          YEAR:      2012
                                          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  96  71  84   8   0  19 0.00  0.0    0  5.6 16 320   M    M   3 1      22 290
 2  92  73  83   7   0  18    T  0.0    0  6.8 20  20   M    M   4 3      26  20
 3  95  68  82   6   0  17 0.23  0.0    0  4.7 30 330   M    M   6 13     40 290
 4  96  70  83   7   0  18 0.00  0.0    0  5.8 31 290   M    M   7 13     39 290
 5  98  71  85   9   0  20 0.00  0.0    0  8.0 20 310   M    M   5        25 320
 6  98  76  87  11   0  22 0.00  0.0    0  4.3 12 290   M    M   4        17 280
 7 101  75  88  11   0  23 0.00  0.0    0  5.1 17 290   M    M   7 18     21 310
 8 101  76  89  12   0  24    T  0.0    0  4.6 24 350   M    M   8 3      30 360
 9  85  71  78   1   0  13 0.24  0.0    0  4.5 14  40   M    M   7 13     17  30
10  89  67  78   1   0  13 0.00  0.0    0  3.9 14 110   M    M   7 8      17 120
11  89  67  78   1   0  13 0.00  0.0    0  4.4 13 150   M    M   7        18 120
12  87  63  75  -2   0  10 0.00  0.0    0  4.3 13 100   M    M   7        17 130
13  86  69  78   1   0  13    T  0.0    0  2.5 12 300   M    M   9        14 290
14  87  68  78   1   0  13 0.10  0.0    0  3.5 15 200   M    M   9 13     21 200
15  95  73  84   7   0  19 0.06  0.0    0  5.2 24 280   M    M   8        30 280
16  96  69  83   6   0  18 0.01  0.0    0  4.6 17 280   M    M   4        23 260
17  99  69  84   7   0  19 0.00  0.0    0  5.2 13 310   M    M   6        18 300
18 101  73  87  10   0  22 0.06  0.0    0  4.0 30 350   M    M   6 3      37 350
19  94  73  84   7   0  19 1.02  0.0    0  6.0 35 310   M    M   8 13     45 310
20  83  67  75  -2   0  10 0.57  0.0    0  6.8 15  80   M    M   9 138    21 100
21  69  65  67 -10   0   2 0.13  0.0    0  6.1 12  40   M    M  10 1      14  30
22  84  67  76  -1   0  11    T  0.0    0  2.3  9 140   M    M   9 1      12 140
23  89  69  79   2   0  14    T  0.0    0  4.0 12 200   M    M   6 1      16 280
24  90  71  81   4   0  16    T  0.0    0  7.7 17 290   M    M   5        22 280
25  86  69  78   1   0  13 0.00  0.0    0  4.7 12 310   M    M   1        18 300
26  98  68  83   6   0  18    T  0.0    0  8.0 25 340   M    M   4        33 340
27  90  72  81   4   0  16    T  0.0    0  4.5 14 310   M    M   7        18 280
28  92  70  81   4   0  16 0.00  0.0    0  5.4 18 320   M    M   4        22 330
29  89  69  79   2   0  14 0.00  0.0    0  5.8 15 350   M    M   4        20 360
30  89  65  77   0   0  12 0.00  0.0    0  4.8 16 140   M    M   5 8      22 130
31  90  70  80   3   0  15 0.01  0.0    0  6.2 21 170   M    M   7 3      35 160
================================================================================
SM 2834 2164         0 490  2.43     0.0 159.3          M      193
================================================================================
AV 91.4 69.8                               5.1 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 35 310               # 45  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:    JULY
                                          YEAR:     2012
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 80.6   TOTAL FOR MONTH:   2.43    1 = FOG OR MIST
DPTR FM NORMAL:   3.9   DPTR FM NORMAL:   -1.24    2 = FOG REDUCING VISIBILITY
HIGHEST:   101 ON 18, 8 GRTST 24HR  1.44 ON 19-20      TO 1/4 MILE OR LESS
LOWEST:     63 ON 12                               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:  10
MAX 90 OR ABOVE:  18    0.10 INCH OR MORE:   6
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.     0    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL     0    PTCLDY (SCALE 4-7)  25
TOTAL FM JUL 1     0    CLOUDY (SCALE 8-10)  5
DPTR FM NORMAL     0

[CDD (BASE 65) ]
TOTAL THIS MO.   490
DPTR FM NORMAL   127    [PRESSURE DATA]
TOTAL FM JAN 1   887    HIGHEST SLP M ON M
DPTR FM NORMAL   195    LOWEST  SLP 29.66 ON 26

[REMARKS]
#FINAL-07-12#