WFO Monthly/Daily Climate Data
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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CXUS51 KLWX 190815
CF6IAD
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: WASHINGTON DULLES DC
MONTH: AUGUST
YEAR: 2025
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 74 66 70 -7 0 5 0.12 0.0 0 8.2 17 20 M M 10 1 24 360
2 81 60 71 -6 0 6 0.00 0.0 0 M 13 20 M M 5 20 30
3 82 57 70 -7 0 5 0.00 0.0 0 3.8 13 50 M M 4 17 50
4 85 56 71 -6 0 6 0.00 0.0 0 3.5 10 150 M M 4 1 16 150
5 82 63 73 -4 0 8 0.00 0.0 0 3.2 9 160 M M 9 13 140
6 78 67 73 -4 0 8 0.00 0.0 0 5.4 14 110 M M 9 18 110
7 82 65 74 -3 0 9 T 0.0 0 6.0 14 80 M M 5 20 40
8 82 61 72 -5 0 7 0.00 0.0 0 3.3 12 90 M M 2 1 16 50
9 84 58 71 -6 0 6 0.00 0.0 0 1.8 10 90 M M 1 1 16 70
10 86 54 70 -6 0 5 0.00 0.0 0 3.2 12 150 M M 1 17 130
11 86 61 74 -2 0 9 0.00 0.0 0 4.7 12 220 M M 5 1 16 220
12 90 68 79 3 0 14 0.00 0.0 0 4.0 13 190 M M 6 1 17 180
13 86 72 79 3 0 14 0.20 0.0 0 2.1 9 230 M M 7 13 13 230
14 94 68 81 5 0 16 T 0.0 0 4.6 22 10 M M 5 13 30 10
15 89 69 79 3 0 14 0.27 0.0 0 4.6 16 110 M M 5 13 22 130
16 89 74 82 6 0 17 0.08 0.0 0 4.7 12 140 M M 6 18 17 180
17 95 72 84 8 0 19 0.15 0.0 0 6.5 31 330 M M 6 13 43 330
18 76 68 72 -4 0 7 0.00 0.0 0 9.9 18 360 M M 9 30 360
================================================================================
SM 1521 1159 0 175 0.82 0.0 79.5 M 99
================================================================================
AV 84.5 64.4 4.7 FASTST M M 6 MAX(MPH)
MISC ----> 31 330 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: AUGUST
YEAR: 2025
LATITUDE: 38 57 N
LONGITUDE: 77 27 W
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 74.4 TOTAL FOR MONTH: 0.82 1 = FOG OR MIST
DPTR FM NORMAL: -2.1 DPTR FM NORMAL: -1.24 2 = FOG REDUCING VISIBILITY
HIGHEST: 95 ON 17 GRTST 24HR 0.41 ON 31- 1 TO 1/4 MILE OR LESS
LOWEST: 54 ON 10 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: 3 0.10 INCH OR MORE: 4
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. 0 CLEAR (SCALE 0-3) 3
DPTR FM NORMAL 0 PTCLDY (SCALE 4-7) 11
TOTAL FM JUL 1 0 CLOUDY (SCALE 8-10) 4
DPTR FM NORMAL 0
[CDD (BASE 65) ]
TOTAL THIS MO. 175
DPTR FM NORMAL -33 [PRESSURE DATA]
TOTAL FM JAN 1 1091 HIGHEST SLP M ON M
DPTR FM NORMAL 161 LOWEST SLP 29.82 ON 13
[REMARKS]