CXUS51 KLWX 220815 CF6IAD PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: WASHINGTON DULLES DC MONTH: AUGUST YEAR: 2026 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 87 65 76 -1 0 11 T 0.0 0 6.6 14 160 M M 8 21 150 2 81 74 78 1 0 13 0.37 0.0 0 7.5 15 110 M M 9 13 23 190 3 89 74 82 5 0 17 0.04 0.0 0 8.1 16 310 M M 7 1 27 310 4 87 70 79 2 0 14 0.00 0.0 0 6.5 13 120 M M 6 18 130 5 87 73 80 3 0 15 0.46 0.0 0 5.4 10 180 M M 7 18 16 180 6 91 71 81 4 0 16 0.49 0.0 0 5.2 15 20 M M 5 138 22 20 7 91 69 80 3 0 15 0.31 0.0 0 4.4 15 210 M M 5 13 21 210 8 91 69 80 3 0 15 T 0.0 0 4.2 14 200 M M 4 21 210 9 91 70 81 4 0 16 0.00 0.0 0 4.1 14 280 M M 5 19 290 10 92 69 81 5 0 16 0.38 0.0 0 3.9 29 330 M M 5 138 48 330 11 87 69 78 2 0 13 0.12 0.0 0 6.0 20 300 M M 7 13 29 290 12 86 72 79 3 0 14 0.00 0.0 0 5.2 10 320 M M 7 16 330 13 89 69 79 3 0 14 0.00 0.0 0 4.1 15 330 M M 5 22 320 14 83 74 79 3 0 14 T 0.0 0 4.6 12 340 M M 8 17 20 15 87 71 79 3 0 14 0.00 0.0 0 4.2 10 140 M M 5 14 130 16 80 72 76 0 0 11 1.35 0.0 0 7.2 17 150 M M 9 123 23 190 17 91 72 82 6 0 17 0.01 0.0 0 6.1 18 350 M M 7 3 25 350 18 87 69 78 2 0 13 0.00 0.0 0 5.9 13 330 M M 4 20 320 19 89 62 76 0 0 11 0.00 0.0 0 2.4 12 250 M M 3 20 250 20 89 68 79 3 0 14 0.64 0.0 0 7.6 22 350 M M 8 13 33 290 21 82 65 74 -1 0 9 0.00 0.0 0 4.3 15 30 M M 6 20 20 ================================================================================ SM 1837 1467 0 292 4.17 0.0 113.5 M 130 ================================================================================ AV 87.5 69.9 5.4 FASTST M M 6 MAX(MPH) MISC ----> 29 330 48 330 ================================================================================ 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: 2026 LATITUDE: 38 57 N LONGITUDE: 77 27 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 78.7 TOTAL FOR MONTH: 4.17 1 = FOG OR MIST DPTR FM NORMAL: 2.3 DPTR FM NORMAL: 1.79 2 = FOG REDUCING VISIBILITY HIGHEST: 92 ON 10 GRTST 24HR 1.35 ON 16-16 TO 1/4 MILE OR LESS LOWEST: 62 ON 193 = 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: 6 0.10 INCH OR MORE: 8 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 2 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1 [HDD (BASE 65) ] TOTAL THIS MO. 0 CLEAR (SCALE 0-3) 1 DPTR FM NORMAL 0 PTCLDY (SCALE 4-7) 17 TOTAL FM JUL 1 0 CLOUDY (SCALE 8-10) 3 DPTR FM NORMAL 0 [CDD (BASE 65) ] TOTAL THIS MO. 292 DPTR FM NORMAL 53 [PRESSURE DATA] TOTAL FM JAN 1 1178 HIGHEST SLP M ON M DPTR FM NORMAL 217 LOWEST SLP 29.73 ON 2 [REMARKS]