Text Products for CF6 Issued by IAD

WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA
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CXUS51 KLWX 011631
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     DECEMBER
                                          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  47  38  43   2  22   0 0.01  0.0    0  8.8 23 290   M    M   9        33 280
 2  48  34  41   0  24   0 0.00  0.0    0 11.4 29 300   M    M   5        38 300
 3  53  25  39  -1  26   0 0.00  0.0    0  2.6 12 180   M    M   5        15 190
 4  50  44  47   7  18   0 0.39  0.0    0  5.4 13 190   M    M   9 1      17 180
 5  48  41  45   5  20   0 0.59  0.0    0 14.9 25 310   M    M   9 1      36 330
 6  45  31  38  -1  27   0 0.00  0.0    0 11.4 20 310   M    M   5        26 320
 7  40  28  34  -5  31   0 0.00  0.0    0  8.7 18 320   M    M   6        30 340
 8  45  31  38   0  27   0 0.00  0.0    0 14.1 25 310   M    M   1        33 320
 9  44  26  35  -3  30   0 0.00  0.0    0  3.2 13 310   M    M   4        18 300
10  54  24  39   1  26   0 0.00  0.0    0  2.9  9 180   M    M   1 1      13 310
11  62  32  47   9  18   0 0.00  0.0    0  6.3 13 190   M    M   2 1      18 200
12  65  36  51  14  14   0    T  0.0    0  6.9 21 220   M    M   6 18     31 220
13  65  39  52  15  13   0 0.00  0.0    0  8.1 15 350   M    M   4        21 340
14  44  34  39   2  26   0 1.24  0.0    0  9.0 25 320   M    M   8 1      34 320
15  41  27  34  -2  31   0 0.00  0.0    0  6.3 14 320   M    M   5        19 310
16  34  27  31  -5  34   0 1.30  2.3    0 10.4 24 300   M    M   9 14568   33  10
17  36  28  32  -4  33   0 0.01    T    1  6.5 18 350   M    M   7 1      25  10
18  37  27  32  -4  33   0    T  0.1    1  4.3 12 340   M    M  10 1      16 360
19  36  23  30  -5  35   0 0.00  0.0    1  2.3  8 150   M    M   8        12 170
20  46  32  39   4  26   0 0.00  0.0    T  4.9 14 190   M    M   8        19 180
21  45  35  40   5  25   0 0.02  0.0    0  3.0  9 330   M    M   9 12     12 330
22  49  34  42   7  23   0    T  0.0    0 12.4 33 300   M    M   6 1      44 310
23  49  25  37   2  28   0 0.00  0.0    0  6.0 17 200   M    M   6        25 210
24  61  43  52  18  13   0 1.94  0.0    0  7.6 24 220   M    M  10 1      37 240
25  55  22  39   5  26   0 0.31    T    0 13.2 24 300   M    M   9 1      33 320
26  35  20  28  -6  37   0 0.00  0.0    0  6.7 15 300   M    M   5        20 310
27  41  19  30  -4  35   0 0.00  0.0    0  4.1 10 150   M    M   6        17 150
28  56  32  44  10  21   0 0.00  0.0    0  9.6 16 200   M    M   6        24 190
29  42  24  33  -1  32   0 0.00  0.0    0 10.3 22 310   M    M   3        32 320
30  47  26  37   3  28   0 0.00  0.0    0 10.8 21 200   M    M   8        32 180
31  51  39  45  11  20   0    T  0.0    0  9.8 24 200   M    M  10        33 190
================================================================================
SM 1471  946       802   0  5.81  2.4    241.9          M      199
================================================================================
AV 47.5 30.5                               7.8 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->    33 300                 44 310
================================================================================
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:     DECEMBER
                                          YEAR:      2020
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 39.0   TOTAL FOR MONTH:   5.81    1 = FOG OR MIST
DPTR FM NORMAL:   2.4   DPTR FM NORMAL:    2.85    2 = FOG REDUCING VISIBILITY
HIGHEST:    65 ON 13,12  GRTST 24HR  2.25 ON 24-25      TO 1/4 MILE OR LESS
LOWEST:     19 ON 27                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   2.4 INCHES  5 = HAIL
                        GRTST 24HR   2.3 ON 16-16  6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:   1 ON 19,18  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:   9
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   6
MIN 32 OR BELOW:  20    0.50 INCH OR MORE:   4
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   3

[HDD (BASE 65) ]
TOTAL THIS MO.   802    CLEAR  (SCALE 0-3)   3
DPTR FM NORMAL   -80    PTCLDY (SCALE 4-7)  18
TOTAL FM JUL 1  1469    CLOUDY (SCALE 8-10) 10
DPTR FM NORMAL  -329

[CDD (BASE 65) ]
TOTAL THIS MO.     0
DPTR FM NORMAL     0    [PRESSURE DATA]
TOTAL FM JAN 1  1406    HIGHEST SLP 30.58 ON 30
DPTR FM NORMAL   228    LOWEST  SLP 29.39 ON 25

[REMARKS]
#FINAL-12-20#
National Weather Service National Headquarters
