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

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CXUS51 KLWX 011905
CF6DCA
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON NATIONAL DC
                                          MONTH:     MAY
                                          YEAR:      2021
                                          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  69  47  58  -5   7   0 0.00  0.0    0 12.9 30 310   M    M   2        42 320
 2  84  54  69   5   0   4 0.00  0.0    0 10.9 21 200   M    M   6        29 190
 3  76  65  71   7   0   6 0.06  0.0    0  9.5 18 210   M    M  10 8      26 220
 4  84  66  75  11   0  10 0.48  0.0    0  8.0 31 250   M    M   7 13     46 270
 5  81  56  69   5   0   4 0.06  0.0    0 10.6 29 320   M    M   7 1      42 310
 6  66  49  58  -7   7   0 0.00  0.0    0  8.8 24 320   M    M   4        32 340
 7  65  48  57  -8   8   0 0.05  0.0    0  5.8 21 260   M    M   9 3      31 260
 8  62  44  53 -12  12   0 0.04  0.0    0  9.6 31 340   M    M   6 1      41 320
 9  69  47  58  -7   7   0 0.00  0.0    0  8.9 20 170   M    M   9        26 160
10  71  52  62  -4   3   0    T  0.0    0 12.9 24 320   M    M   5        32 320
11  70  52  61  -5   4   0 0.00  0.0    0  9.0 21 330   M    M   7 8      28 250
12  69  50  60  -6   5   0 0.00  0.0    0  9.2 20 340   M    M   7 8      28 320
13  72  49  61  -5   4   0 0.00  0.0    0  6.9 16  10   M    M   4 8      22  20
14  74  52  63  -4   2   0 0.00  0.0    0  4.4 12 170   M    M   5        16 330
15  79  51  65  -2   0   0 0.00  0.0    0  3.9 14 170   M    M   5        20  30
16  73  54  64  -3   1   0    T  0.0    0  6.4 22 280   M    M   9 8      28 280
17  75  54  65  -2   0   0 0.00  0.0    0  4.5 10 160   M    M   6        14 160
18  79  55  67  -1   0   2 0.00  0.0    0  6.5 13 200   M    M   4 8      16 200
19  85  58  72   4   0   7 0.00  0.0    0  7.1 14 170   M    M   2 8      16 170
20  93  62  78  10   0  13 0.00  0.0    0  6.5 18 130   M    M   4        25 150
21  83  59  71   3   0   6 0.00  0.0    0  5.5 13 180   M    M   5        16 180
22  91  62  77   8   0  12 0.00  0.0    0  8.1 18 340   M    M   8        26 330
23  94  74  84  15   0  19 0.00  0.0    0 10.6 21 320   M    M   6        32 320
24  80  59  70   1   0   5 0.34  0.0    0  9.6 18 100   M    M  10        23  90
25  79  58  69  -1   0   4 0.00  0.0    0  7.6 14 160   M    M   8        17 160
26  91  70  81  11   0  16 0.90  0.0    0  8.6 40 270   M    M   7 13     53 270
27  86  69  78   8   0  13 0.00  0.0    0  7.3 17 340   M    M   5        23 320
28  77  59  68  -3   0   3 1.16  0.0    0 11.3 18  30   M    M   9 13     23  50
29  59  51  55 -16  10   0 0.53  0.0    0 13.9 22  50   M    M  10 1      28  20
30  58  50  54 -17  11   0 0.15  0.0    0 11.8 20  20   M    M   9        26  20
31  76  50  63  -9   2   0 0.00  0.0    0  5.5 18 320   M    M   4        24 350
================================================================================
SM 2370 1726        83 124  3.77  0.0    262.1          M      199
================================================================================
AV 76.5 55.7                               8.5 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->    40 270                 53 270
================================================================================
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:     MAY
                                          YEAR:      2021
                                          LATITUDE:   38 50 N
                                          LONGITUDE:  77  2 W

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

AVERAGE MONTHLY: 66.1   TOTAL FOR MONTH:   3.77    1 = FOG OR MIST
DPTR FM NORMAL:  -1.1   DPTR FM NORMAL:   -0.17    2 = FOG REDUCING VISIBILITY
HIGHEST:    94 ON 23    GRTST 24HR  1.68 ON 28-29      TO 1/4 MILE OR LESS
LOWEST:     44 ON  8                               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:   4    0.10 INCH OR MORE:   6
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   3
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.    83    CLEAR  (SCALE 0-3)   2
DPTR FM NORMAL    20    PTCLDY (SCALE 4-7)  19
TOTAL FM JUL 1  3498    CLOUDY (SCALE 8-10) 10
DPTR FM NORMAL  -267

[CDD (BASE 65) ]
TOTAL THIS MO.   124
DPTR FM NORMAL    -8    [PRESSURE DATA]
TOTAL FM JAN 1   164    HIGHEST SLP 30.55 ON 21
DPTR FM NORMAL    -3    LOWEST  SLP 29.67 ON  5

[REMARKS]
#FINAL-05-21#


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