WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CXUS51 KLWX 030119
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: WASHINGTON DULLES DC
MONTH: JULY
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 89 70 80 4 0 15 0.75 0.0 0 3.2 28 330 M M 7 13 39 320
2 81 63 72 -4 0 7 0.04 0.0 0 8.2 22 290 M M 6 1 28 310
3 80 61 71 -6 0 6 T 0.0 0 9.5 21 320 M M 5 30 310
4 84 58 71 -6 0 6 0.00 0.0 0 3.0 12 220 M M 4 18 16 210
5 89 64 77 0 0 12 0.00 0.0 0 3.8 12 220 M M 5 18 16 220
6 94 68 81 4 0 16 0.00 0.0 0 6.1 15 210 M M 1 20 200
7 95 70 83 6 0 18 0.02 0.0 0 2.3 15 330 M M 4 3 22 320
8 87 70 79 2 0 14 0.79 0.0 0 5.5 18 220 M M 9 13 27 180
9 90 68 79 2 0 14 0.63 0.0 0 4.7 22 20 M M 5 13 29 30
10 84 69 77 0 0 12 0.00 0.0 0 6.2 14 310 M M 5 20 310
11 90 72 81 4 0 16 0.01 0.0 0 8.1 17 190 M M 7 24 180
12 92 74 83 6 0 18 0.00 0.0 0 6.4 15 200 M M 5 20 200
13 95 75 85 8 0 20 0.00 0.0 0 8.6 21 190 M M 5 30 180
14 90 71 81 4 0 16 T 0.0 0 4.4 16 180 M M 5 3 23 200
15 92 67 80 2 0 15 0.01 0.0 0 2.8 14 240 M M 6 13 21 250
16 95 68 82 4 0 17 0.00 0.0 0 3.8 14 190 M M 3 20 200
17 95 71 83 5 0 18 0.15 0.0 0 4.9 17 250 M M 5 38 25 250
18 83 70 77 -1 0 12 0.00 0.0 0 9.7 23 290 M M 7 34 310
19 89 65 77 -1 0 12 0.00 0.0 0 2.8 12 300 M M 7 17 0
20 91 66 79 1 0 14 0.00 0.0 0 4.4 10 290 M M 1 15 350
21 90 69 80 2 0 15 T 0.0 0 7.5 23 350 M M 4 18 31 340
22 83 62 73 -5 0 8 0.00 0.0 0 5.6 15 350 M M 5 22 360
23 85 61 73 -4 0 8 0.00 0.0 0 3.4 12 310 M M 5 15 300
24 87 61 74 -3 0 9 T 0.0 0 6.9 18 180 M M 7 25 180
25 92 72 82 5 0 17 0.00 0.0 0 8.7 15 190 M M 7 21 210
26 94 68 81 4 0 16 0.00 0.0 0 4.6 25 20 M M 6 13 32 20
27 95 67 81 4 0 16 0.00 0.0 0 3.1 15 320 M M 2 1 22 330
28 93 66 80 3 0 15 0.03 0.0 0 4.9 15 350 M M 3 3 20 330
29 90 67 79 2 0 14 T 0.0 0 4.9 20 240 M M 7 18 25 220
30 91 69 80 3 0 15 0.00 0.0 0 8.6 18 360 M M 5 28 320
31 83 64 74 -3 0 9 T 0.0 0 4.1 10 220 M M 6 16 220
================================================================================
SM 2768 2086 0 420 2.43 0.0 170.7 M 159
================================================================================
AV 89.3 67.3 5.5 FASTST M M 5 MAX(MPH)
MISC ----> 28 330 39 320
================================================================================
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: JULY
YEAR: 2021
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 78.3 TOTAL FOR MONTH: 2.43 1 = FOG OR MIST
DPTR FM NORMAL: 1.1 DPTR FM NORMAL: -1.72 2 = FOG REDUCING VISIBILITY
HIGHEST: 95 ON 27,17 GRTST 24HR 0.83 ON 30- 1 TO 1/4 MILE OR LESS
LOWEST: 58 ON 4 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: 9
MAX 90 OR ABOVE: 18 0.10 INCH OR MORE: 4
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 3
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0
[HDD (BASE 65) ]
TOTAL THIS MO. 0 CLEAR (SCALE 0-3) 4
DPTR FM NORMAL 0 PTCLDY (SCALE 4-7) 26
TOTAL FM JUL 1 0 CLOUDY (SCALE 8-10) 1
DPTR FM NORMAL 0
[CDD (BASE 65) ]
TOTAL THIS MO. 420
DPTR FM NORMAL 42 [PRESSURE DATA]
TOTAL FM JAN 1 823 HIGHEST SLP 30.20 ON 23
DPTR FM NORMAL 101 LOWEST SLP 29.76 ON 30
[REMARKS]
#FINAL-07-21#