CXUS51 KLWX 210815 CF6IAD PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: WASHINGTON DULLES DC MONTH: JUNE 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 79 52 66 -2 0 1 0.00 0.0 0 7.4 15 50 M M 6 18 21 100 2 76 52 64 -5 1 0 0.00 0.0 0 5.1 16 20 M M 4 23 10 3 82 50 66 -3 0 1 0.00 0.0 0 5.7 18 360 M M 1 8 24 350 4 86 50 68 -1 0 3 0.00 0.0 0 3.5 14 330 M M 3 18 19 330 5 89 55 72 2 0 7 0.00 0.0 0 4.6 13 230 M M 4 8 18 240 6 89 60 75 5 0 10 T 0.0 0 4.7 16 220 M M 6 8 23 200 7 91 66 79 9 0 14 0.00 0.0 0 7.7 17 300 M M 5 27 330 8 79 66 73 3 0 8 0.00 0.0 0 8.4 15 110 M M 5 22 60 9 84 64 74 3 0 9 0.00 0.0 M 7.9 16 190 M M 9 22 220 10 88 69 79 8 0 14 0.57 0.0 0 8.4 21 280 M M 7 138 30 280 11 94 71 83 12 0 18 0.19 0.0 M 5.8 30 270 M M 7 13 51 270 12 94 69 82 10 0 17 0.29 0.0 M 6.6 32 310 M M 6 13 67 300 13 87 64 76 4 0 11 T 0.0 M 4.7 14 360 M M 5 20 360 14 91 66 79 7 0 14 0.00 0.0 0 8.2 21 290 M M 7 31 310 15 78 63 71 -1 0 6 0.00 0.0 0 10.9 21 300 M M 5 31 310 16 79 57 68 -5 0 3 0.00 0.0 0 5.5 13 220 M M 3 19 220 17 87 58 73 0 0 8 0.00 0.0 0 7.3 17 190 M M 5 25 210 18 85 70 78 5 0 13 T 0.0 0 8.6 17 210 M M 9 26 210 19 83 72 78 4 0 13 0.01 0.0 0 10.5 23 310 M M 6 37 300 20 87 60 74 0 0 9 0.00 0.0 0 8.1 18 300 M M 4 29 300 ================================================================================ SM 1708 1234 1 179 1.06 0.0 139.6 M 107 ================================================================================ AV 85.4 61.7 7.0 FASTST M M 5 MAX(MPH) MISC ----> 32 310 67 300 ================================================================================ 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: JUNE YEAR: 2026 LATITUDE: 38 57 N LONGITUDE: 77 27 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 73.6 TOTAL FOR MONTH: 1.06 1 = FOG OR MIST DPTR FM NORMAL: 2.4 DPTR FM NORMAL: -1.83 2 = FOG REDUCING VISIBILITY HIGHEST: 94 ON 12,11 GRTST 24HR 0.57 ON 10-10 TO 1/4 MILE OR LESS LOWEST: 50 ON 4, 3 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: 4 MAX 90 OR ABOVE: 4 0.10 INCH OR MORE: 3 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 1 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 1 CLEAR (SCALE 0-3) 2 DPTR FM NORMAL -10 PTCLDY (SCALE 4-7) 16 TOTAL FM JUL 1 4412 CLOUDY (SCALE 8-10) 2 DPTR FM NORMAL -191 [CDD (BASE 65) ] TOTAL THIS MO. 179 DPTR FM NORMAL 44 [PRESSURE DATA] TOTAL FM JAN 1 352 HIGHEST SLP M ON M DPTR FM NORMAL 111 LOWEST SLP 29.60 ON 18 [REMARKS]