CXUS55 KBOU 150900 CF6BDU PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: BOULDER AIRPORT MONTH: APRIL YEAR: 2026 LATITUDE: 40 2 N LONGITUDE: 105 14 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 52 37 45 -2 20 0 M M M 1.0 7 360 M M 6 1 M M 2 72 37 55 8 10 0 M M M 7.2 18 250 M M 4 12 33 230 3 52 34 43 -4 22 0 M M M 11.2 29 270 M M 1 40 270 4 63 30 47 0 18 0 M M M 3.9 8 90 M M 0 16 70 5 68 34 51 4 14 0 M M M 3.0 8 200 M M 0 M M 6 66 39 53 6 12 0 M M M 4.1 9 50 M M 0 16 60 7 75 32 54 7 11 0 M M M 4.5 15 230 M M 1 27 250 8 70 46 58 11 7 0 M M M 8.5 21 270 M M 1 28 270 9 75 37 56 8 9 0 M M M 4.4 18 240 M M 3 31 20 10 63 36 50 2 15 0 M M M 3.4 7 200 M M 2 M M 11 75 41 58 10 7 0 M M M 4.7 21 290 M M 2 36 290 12 77 48 63 15 2 0 M M M 5.9 13 270 M M 1 25 270 13 72 46 59 11 6 0 M M M 6.8 17 300 M M 2 23 240 14 54 43 49 1 16 0 M M M 5.9 17 280 M M 9 8 25 280 ================================================================================ SM 934 540 169 0 M M 74.5 M 32 ================================================================================ AV 66.7 38.6 5.3 FASTST M M 2 MAX(MPH) MISC ----> 29 270 40 270 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: BOULDER AIRPORT MONTH: APRIL YEAR: 2026 LATITUDE: 40 2 N LONGITUDE: 105 14 W [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 52.6 TOTAL FOR MONTH: M 1 = FOG OR MIST DPTR FM NORMAL: 5.2 DPTR FM NORMAL: M 2 = FOG REDUCING VISIBILITY HIGHEST: 77 ON 12 GRTST 24HR M ON M TO 1/4 MILE OR LESS LOWEST: 30 ON 4 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS TOTAL MONTH: M 5 = HAIL GRTST 24HR M ON M 6 = FREEZING RAIN OR DRIZZLE GRTST DEPTH: M ON M 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: 0 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 0 MIN 32 OR BELOW: 2 0.50 INCH OR MORE: 0 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 0 [HDD (BASE 65) ] TOTAL THIS MO. 169 CLEAR (SCALE 0-3) 11 DPTR FM NORMAL -77 PTCLDY (SCALE 4-7) 2 TOTAL FM JUL 1 3414 CLOUDY (SCALE 8-10) 1 DPTR FM NORMAL -1019 [CDD (BASE 65) ] TOTAL THIS MO. 0 DPTR FM NORMAL 0 [PRESSURE DATA] TOTAL FM JAN 1 39 HIGHEST SLP M ON M DPTR FM NORMAL 39 LOWEST SLP M ON M [REMARKS]