


WFO Monthly/Daily Climate Data
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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404 CXGM50 PGUM 060030 CF6GUM PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) STATION: GUAM INTERNATIONAL AIRPORT MONTH: AUGUST YEAR: 2025 LATITUDE: 13 29 N LONGITUDE: 144-48 E 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 85 76 81 -1 0 16 1.05 M M 5.8 12 330 M M 5 M M 2 87 76 82 0 0 17 0.87 M M 4.9 12 100 M M 5 17 170 3 86 79 83 1 0 18 T M M 7.9 14 160 M M 3 22 150 4 88 77 83 1 0 18 0.01 M M 6.3 14 100 M M 2 20 90 5 82 76 79 -3 0 14 0.59 M M 5.3 12 40 M M 5 17 70 ================================================================================ SM 428 384 0 83 2.52 M 30.2 M 20 ================================================================================ AV 85.6 76.8 6.0 FASTST M M 4 MAX(MPH) MISC ----> # 14 160 22 150 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: GUAM INTERNATIONAL AIRPORT MONTH: AUGUST YEAR: 2025 LATITUDE: 13 29 N LONGITUDE: 144-48 E [TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16 AVERAGE MONTHLY: 81.2 TOTAL FOR MONTH: 2.52 1 = FOG OR MIST DPTR FM NORMAL: -0.8 DPTR FM NORMAL: -0.12 2 = FOG REDUCING VISIBILITY HIGHEST: 88 ON 4 GRTST 24HR 1.05 ON 1- 1 TO 1/4 MILE OR LESS LOWEST: 76 ON 5, 2 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: 4 MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 3 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 3 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 1 [HDD (BASE 65) ] TOTAL THIS MO. 0 CLEAR (SCALE 0-3) 2 DPTR FM NORMAL 0 PTCLDY (SCALE 4-7) 3 TOTAL FM JUL 1 0 CLOUDY (SCALE 8-10) 0 DPTR FM NORMAL 0 [CDD (BASE 65) ] TOTAL THIS MO. 83 DPTR FM NORMAL -2 [PRESSURE DATA] TOTAL FM JAN 1 3681 HIGHEST SLP 29.91 ON 1 DPTR FM NORMAL -10 LOWEST SLP 29.79 ON 1 [REMARKS]