CXUS51 KLWX 120915 CF6IAD PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: WASHINGTON DULLES DC MONTH: DECEMBER 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 44 25 35 -6 30 0 0.00 0.0 0 7.3 18 320 M M 6 31 310 2 40 33 37 -4 28 0 0.73 0.0 0 9.0 26 300 M M 10 1 35 300 3 44 25 35 -6 30 0 0.00 0.0 0 4.9 17 310 M M 2 25 300 4 43 21 32 -8 33 0 0.00 0.0 0 7.1 25 320 M M 6 36 300 5 32 27 30 -10 35 0 0.05 1.3 T 4.0 15 350 M M 10 18 20 350 6 42 27 35 -5 30 0 T T T 2.3 8 220 M M 8 1 10 220 7 44 24 34 -6 31 0 0.00 0.0 0 3.3 12 220 M M 5 1 16 180 8 37 24 31 -8 34 0 0.00 0.0 0 9.6 21 10 M M 9 1 29 360 9 33 13 23 -16 42 0 0.00 0.0 0 8.0 20 190 M M 7 29 210 10 45 29 37 -2 28 0 T 0.0 0 10.5 22 210 M M 8 31 170 11 41 32 37 -2 28 0 T T 0 14.7 31 300 M M 7 43 300 ================================================================================ SM 445 280 349 0 0.78 1.3 80.7 M 78 ================================================================================ AV 40.5 25.5 7.3 FASTST M M 7 MAX(MPH) MISC ----> 31 300 43 300 ================================================================================ 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: DECEMBER YEAR: 2025 LATITUDE: 38 57 N LONGITUDE: 77 27 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 33.0 TOTAL FOR MONTH: 0.78 1 = FOG OR MIST DPTR FM NORMAL: -7.0 DPTR FM NORMAL: -0.48 2 = FOG REDUCING VISIBILITY HIGHEST: 45 ON 10 GRTST 24HR 0.73 ON 2- 2 TO 1/4 MILE OR LESS LOWEST: 13 ON 9 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: 1.3 INCHES 5 = HAIL GRTST 24HR 1.3 ON 5- 5 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: T 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: 1 0.01 INCH OR MORE: 2 MAX 90 OR ABOVE: 0 0.10 INCHOR MORE: 1 MIN 32 OR BELOW: 10 0.50 INCH OR MORE: 1 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 349 CLEAR (SCALE 0-3) 1 DPTR FM NORMAL 73 PTCLDY (SCALE 4-7) 6 TOTAL FM JUL 1 1142 CLOUDY (SCALE 8-10) 4 DPTR FM NORMAL -34 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL 0 [PRESSURE DATA] TOTAL FM JAN 1 1330 HIGHEST SLP M ON M DPTR FM NORMAL 99 LOWEST SLP 29.40 ON 10 [REMARKS]