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029
CXUS51 KLWX 012210
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     SEPTEMBER
                                          YEAR:      2020
                                          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  79  66  73   0   0   8 0.18  0.0    0  3.5 10 130   M    M  10 1      14 130
 2  87  72  80   7   0  15    T  0.0    0  7.9 20 200   M    M   8 13     29 200
 3  91  69  80   8   0  15 0.09  0.0    0  4.3 20 340   M    M   6 13     28 320
 4  88  65  77   5   0  12 0.01  0.0    0  4.9 20 290   M    M   3 1      26 290
 5  80  56  68  -4   0   3 0.00  0.0    0  3.7 10 300   M    M   2        15 290
 6  83  55  69  -3   0   4 0.00  0.0    0  4.0 12 180   M    M   1        19 190
 7  83  57  70  -1   0   5 0.00  0.0    0  3.5 13 170   M    M   1        19 150
 8  85  58  72   1   0   7 0.00  0.0    0  3.4  9 180   M    M   4        12 180
 9  80  66  73   2   0   8 0.77  0.0    0  4.8 12 350   M    M   8 18     17 350
10  83  74  79   9   0  14 0.11  0.0    0  5.1 12 360   M    M   8 1      17  50
11  82  71  77   7   0  12    T  0.0    0  7.6 16 350   M    M   7        21 350
12  73  62  68  -2   0   3    T  0.0    0  7.2 15 110   M    M  10        23 110
13  82  57  70   1   0   5 0.00  0.0    0  2.7 14 210   M    M   3        19 160
14  78  62  70   1   0   5 0.00  0.0    0 10.0 18 320   M    M   7        27 330
15  69  49  59  -9   6   0 0.00  0.0    0  4.5 13  30   M    M   7        19 360
16  73  46  60  -8   5   0 0.00  0.0    0  3.2 14 210   M    M   7        20 190
17  72  54  63  -5   2   0 0.18  0.0    0  1.4  8 210   M    M   9 1      11 210
18  75  57  66  -1   0   1 0.14  0.0    0 10.2 20 350   M    M   7 1      26 340
19  66  43  55 -12  10   0 0.00  0.0    0  6.7 17 360   M    M   2        27 360
20  68  41  55 -11  10   0 0.00  0.0    0  6.4 14  70   M    M   1 8      19  60
21  68  41  55 -11  10   0 0.00  0.0    0  3.5 13  40   M    M   1        20  50
22  72  38  55 -10  10   0 0.00  0.0    0  3.4 15 310   M    M   0        19 300
23  81  45  63  -2   2   0 0.00  0.0    0  4.4 16 320   M    M   2        23 320
24  73  54  64   0   1   0 0.00  0.0    0  1.1  7 210   M    M   8         9 210
25  68  57  63  -1   2   0 0.31  0.0    0  3.9 12 200   M    M   9 12     15 200
26  74  61  68   4   0   3 0.01  0.0    0  4.7 12 320   M    M  10 18     14 320
27  78  64  71   8   0   6    T  0.0    0  3.7  8 150   M    M   8 1      11 140
28  80  65  73  10   0   8 0.00  0.0    0  7.7 15 200   M    M   7        22 180
29  77  55  66   4   0   1 0.37  0.0    0 10.0 23 330   M    M   9 1      33 330
30  71  52  62   0   3   0 0.11  0.0    0  8.9 17 200   M    M   3 1      27 200
================================================================================
SM 2319 1712        61 135  2.28  0.0    156.3          M      168
================================================================================
AV 77.3 57.1                               5.2 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->    23 330                 33 330
================================================================================
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:     SEPTEMBER
                                          YEAR:      2020
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 67.2   TOTAL FOR MONTH:   2.28    1 = FOG OR MIST
DPTR FM NORMAL:  -0.7   DPTR FM NORMAL:   -1.64    2 = FOG REDUCING VISIBILITY
HIGHEST:    91 ON  3    GRTST 24HR  0.88 ON  9-10      TO 1/4 MILE OR LESS
LOWEST:     38 ON 22                               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:  11
MAX 90 OR ABOVE:   1    0.10 INCH OR MORE:   8
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.    61    CLEAR  (SCALE 0-3)   9
DPTR FM NORMAL     5    PTCLDY (SCALE 4-7)  13
TOTAL FM JUL 1    61    CLOUDY (SCALE 8-10)  8
DPTR FM NORMAL     4

[CDD (BASE 65) ]
TOTAL THIS MO.   135
DPTR FM NORMAL    -6    [PRESSURE DATA]
TOTAL FM JAN 1  1387    HIGHEST SLP 30.57 ON 21
DPTR FM NORMAL   230    LOWEST  SLP 29.59 ON 30

[REMARKS]
#FINAL-09-20#