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

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709
CXUS51 KLWX 190620
CF6DCA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON NATIONAL DC
                                          MONTH:     SEPTEMBER
                                          YEAR:      2018
                                          LATITUDE:   38 50 N
                                          LONGITUDE:  77  2 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  89  74  82   6   0  17 0.81  0.0    0  8.4 25 200   M    M   8 13     34 190
 2  89  74  82   6   0  17 0.00  0.0    0  4.0  9 190   M    M   6        10 190
 3  93  78  86  11   0  21 0.00  0.0    0  6.5 15 170   M    M   4        18 170
 4  95  79  87  12   0  22    T  0.0    0  3.5 20  30   M    M   5 3      22  20
 5  93  78  86  11   0  21 0.00  0.0    0  5.1 12 170   M    M   2 8      13 180
 6  93  78  86  12   0  21 0.00  0.0    0  7.5 15 350   M    M   2        17 350
 7  91  72  82   8   0  17 2.89  0.0    0  5.6 24 320   M    M   7 13     30 320
 8  77  63  70  -4   0   5 0.45  0.0    0 11.7 24  40   M    M  10 1      29  40
 9  67  62  65  -9   0   0 1.59  0.0    0 15.1 25  50   M    M  10 1      30  50
10  76  65  71  -2   0   6 0.02  0.0    0  7.5 16  70   M    M  10 13     20  60
11  77  71  74   1   0   9    T  0.0    0  6.9 13 350   M    M  10 123    14 320
12  86  71  79   7   0  14 0.01  0.0    0  4.1 12 350   M    M   8 18     14 360
13  82  73  78   6   0  13    T  0.0    0 10.3 15  60   M    M   9 1      19  40
14  78  72  75   3   0  10    T  0.0    0 13.3 21  50   M    M  10 18     24  50
15  83  70  77   6   0  12    T  0.0    0  9.5 16  60   M    M   9 1      19  40
16  83  69  76   5   0  11 0.00  0.0    0  9.3 17  80   M    M   8 1      20  40
17  80  72  76   5   0  11 1.26  0.0    0  8.7 23 130   M    M  10 13     31 120
18  84  73  79   9   0  14 0.22  0.0    0  8.9 20 350   M    M   6 13     25 330
================================================================================
SM 1516 1294         0 241  7.25     0.0 145.9          M      134
================================================================================
AV 84.2 71.9                               8.1 FASTST   M    M   7    MAX(MPH)
                                 MISC ---->  # 25 200               # 34  190
================================================================================
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 NATIONAL DC
                                          MONTH:    SEPTEMBER
                                          YEAR:     2018
                                          LATITUDE:   38 50 N
                                          LONGITUDE:  77  2 W

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

AVERAGE MONTHLY: 78.1   TOTAL FOR MONTH:   7.25    1 = FOG OR MIST
DPTR FM NORMAL:   4.8   DPTR FM NORMAL:    5.10    2 = FOG REDUCING VISIBILITY
HIGHEST:    95 ON  4    GRTST 24HR  2.89 ON  7- 7      TO 1/4 MILE OR LESS
LOWEST:     62 ON  9                               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:   8
MAX 90 OR ABOVE:   5    0.10 INCH OR MORE:   6
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   4
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   3

[HDD (BASE 65) ]
TOTAL THIS MO.     0    CLEAR  (SCALE 0-3)   2
DPTR FM NORMAL    -3    PTCLDY (SCALE 4-7)   6
TOTAL FM JUL 1     0    CLOUDY (SCALE 8-10) 10
DPTR FM NORMAL    -3

[CDD (BASE 65) ]
TOTAL THIS MO.   241
DPTR FM NORMAL    88    [PRESSURE DATA]
TOTAL FM JAN 1  1844    HIGHEST SLP M ON M
DPTR FM NORMAL   380    LOWEST  SLP 29.76 ON 18

[REMARKS]



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