


WFO Monthly/Daily Climate Data
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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071 CXGM50 PGUM 130030 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 19 30 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 6 90 78 84 2 0 19 0.23 M M 5.1 12 170 M M 4 M M 7 87 76 82 0 0 17 1.58 M M 3.0 21 70 M M 4 13 27 200 8 87 78 83 1 0 18 T M M 5.1 12 100 M M 2 M M 9 88 78 83 1 0 18 0.02 M M 7.4 14 40 M M 1 M M 10 88 78 83 1 0 18 0.01 M M 6.8 10 90 M M 2 M M 11 89 76 83 1 0 18 1.37 M M 6.7 15 40 M M 4 25 90 12 88 77 83 1 0 18 0.03 M M 5.2 12 110 M M 3 16 110 ================================================================================ SM 1045 925 0 209 5.76 M 69.5 M 40 ================================================================================ AV 87.1 77.1 5.8 FASTST M M 3 MAX(MPH) MISC ----> 21 70 27 200 ================================================================================ NOTES: # LAST OF SEVERAL OCCURRENCES COLUMN 17 PEAK WIND IN M.P.H. PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6) , PAGE 2 STATION: 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: 82.1 TOTAL FOR MONTH: 5.76 1 = FOG OR MIST DPTR FM NORMAL: 0.1 DPTR FM NORMAL: -0.93 2 = FOG REDUCING VISIBILITY HIGHEST: 90 ON 6 GRTST 24HR 1.58 ON 7- 7 TO 1/4 MILE OR LESS LOWEST: 76 ON 11, 7 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: 10 MAX 90 OR ABOVE: 1 0.10 INCH OR MORE: 6 MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 5 MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 3 [HDD (BASE 65) ] TOTAL THIS MO. 0 CLEAR (SCALE 0-3) 6 DPTR FM NORMAL 0 PTCLDY (SCALE 4-7) 6 TOTAL FM JUL 1 0 CLOUDY (SCALE 8-10) 0 DPTR FM NORMAL 0 [CDD (BASE 65) ] TOTAL THIS MO. 209 DPTR FM NORMAL 5 [PRESSURE DATA] TOTAL FM JAN 1 3807 HIGHEST SLP 29.91 ON 1 DPTR FM NORMAL -3 LOWEST SLP 29.79 ON 1 [REMARKS]