National Weather Service Text Product Display

WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA
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CXUS51 KLWX 150600
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   WASHINGTON DULLES DC
                                          MONTH:     MAY
                                          YEAR:      2021
                                          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  69  46  58  -2   7   0 0.00  0.0    M 12.4 31 310   M    M   1        43 330
 2  85  50  68   8   0   3 0.00  0.0    0 10.6 20 210   M    M   6        29 210
 3  74  61  68   7   0   3 0.08  0.0    0  8.4 16 180   M    M   9        24 180
 4  83  64  74  13   0   9 0.49  0.0    0  5.7 26 270   M    M   8 13     39 280
 5  79  54  67   6   0   2 0.22  0.0    0  8.4 30 310   M    M   7 12     43 320
 6  65  45  55  -6  10   0 0.00  0.0    0  7.0 22 320   M    M   5        33 340
 7  62  41  52 -10  13   0 0.19  0.0    0  4.1 13 220   M    M   7 1      18 220
 8  62  39  51 -11  14   0 0.04  0.0    0  8.2 31 290   M    M   5 1      42 280
 9  68  40  54  -8  11   0 0.00  0.0    0  7.1 20 180   M    M   9        31 210
10  69  45  57  -5   8   0    T  0.0    0 11.7 22 340   M    M   5        33 330
11  69  44  57  -6   8   0 0.00  0.0    0  6.9 18 250   M    M   6        29 270
12  67  44  56  -7   9   0 0.00  0.0    0  5.8 20 330   M    M   6        29 330
13  70  41  56  -7   9   0 0.00  0.0    0  4.9 15 290   M    M   3        20  30
14  74  39  57  -7   8   0 0.00  0.0    0  3.2 15 330   M    M   5        26 350
================================================================================
SM  996  653        97  17  1.02  0.0    104.4          M       82
================================================================================
AV 71.1 46.6                               7.5 FASTST   M    M   6    MAX(MPH)
                                 MISC ---->  # 31 310               # 43 330
================================================================================
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:     MAY
                                          YEAR:      2021
                                          LATITUDE:   38 57 N
                                          LONGITUDE:  77 27 W

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

AVERAGE MONTHLY: 58.9   TOTAL FOR MONTH:   1.02    1 = FOG OR MIST
DPTR FM NORMAL:  -2.9   DPTR FM NORMAL:   -1.04    2 = FOG REDUCING VISIBILITY
HIGHEST:    85 ON  2    GRTST 24HR  0.68 ON  4- 5      TO 1/4 MILE OR LESS
LOWEST:     39 ON 14, 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:   5
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   3
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   0
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0

[HDD (BASE 65) ]
TOTAL THIS MO.    97    CLEAR  (SCALE 0-3)   1
DPTR FM NORMAL    28    PTCLDY (SCALE 4-7)  11
TOTAL FM JUL 1  4105    CLOUDY (SCALE 8-10)  2
DPTR FM NORMAL  -441

[CDD (BASE 65) ]
TOTAL THIS MO.    17
DPTR FM NORMAL    -7    [PRESSURE DATA]
TOTAL FM JAN 1    43    HIGHEST SLP M ON M
DPTR FM NORMAL    -3    LOWEST  SLP 29.65 ON  3

[REMARKS]
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