CXUS51 KLWX 060815 CF6IAD PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: WASHINGTON DULLES DC MONTH: MAY 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 68 38 53 -7 12 0 0.01 0.0 0 5.3 18 200 M M 4 25 220 2 60 45 53 -7 12 0 0.00 0.0 0 11.3 18 330 M M 8 28 340 3 63 40 52 -9 13 0 0.00 0.0 0 7.8 20 300 M M 3 29 310 4 78 41 60 -1 5 0 0.00 0.0 0 8.8 21 200 M M 5 29 190 5 85 58 72 11 0 7 0.00 0.0 0 13.9 25 210 M M 3 37 200 ================================================================================ SM 354 222 42 7 0.01 0.0 47.1 M 23 ================================================================================ AV 70.8 44.4 9.4 FASTST M M 5 MAX(MPH) MISC ----> 25 210 37 200 ================================================================================ 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: 2026 LATITUDE: 38 57 N LONGITUDE: 77 27 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 57.6 TOTAL FOR MONTH: 0.01 1 = FOG OR MIST DPTR FM NORMAL: -3.0 DPTR FM NORMAL: -0.70 2 = FOG REDUCING VISIBILITY HIGHEST: 85 ON 5 GRTST 24HR 0.01 ON 1- 1 TO 1/4 MILE OR LESS LOWEST: 38 ON 1 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: 1 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 0 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. 42 CLEAR (SCALE 0-3) 1 DPTR FM NORMAL 13 PTCLDY (SCALE 4-7) 4 TOTAL FM JUL 1 4321 CLOUDY (SCALE 8-10) 0DPTR FM NORMAL -185 [CDD (BASE 65) ] TOTAL THIS MO. 7 DPTR FM NORMAL 1 [PRESSURE DATA] TOTAL FM JAN 1 93 HIGHEST SLP M ON M DPTR FM NORMAL 65 LOWEST SLP 29.78 ON 5 [REMARKS]