WFO Monthly/Daily Climate Data
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
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CXGM50 PGUM 010030
CF6GUM
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: GUAM INTERNATIONAL AIRPORT
MONTH: SEPTEMBER
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 88 74 81 -1 0 16 2.09 M M 6.3 23 30 M M 4 3 30 280
2 87 76 82 0 0 17 0.82 M M 9.2 20 90 M M 4 33 80
3 85 77 81 -1 0 16 T M M 6.9 13 90 M M 3 M M
4 87 77 82 0 0 17 0.04 M M 8.3 18 70 M M 2 25 70
5 82 75 79 -3 0 14 1.09 M M 5.7 17 160 M M 3 25 60
6 88 76 82 0 0 17 0.40 M M 5.0 17 80 M M 2 28 90
7 87 76 82 0 0 17 0.17 M M 4.7 10 80 M M 2 M M
8 87 77 82 0 0 17 0.19 M M 5.6 10 100 M M 2 17 100
9 89 76 83 1 0 18 0.34 M M 7.8 22 110 M M 3 33 M
10 88 77 83 1 0 18 0.04 M M 7.2 14 80 M M 3 21 90
11 88 76 82 0 0 17 0.50 M M 6.7 10 290 M M 4 22 90
12 89 76 83 1 0 18 0.01 M M 5.7 10 90 M M 1 M M
13 87 75 81 -1 0 16 0.41 M M 5.8 15 60 M M 4 25 70
14 87 77 82 0 0 17 0.03 M M 10.2 22 50 M M 3 25 60
15 86 74 80 -2 0 15 0.75 M M 7.2 15 90 M M 6 22 90
16 86 72 79 -3 0 14 1.11 M M 6.4 18 110 M M 6 39 110
17 85 73 79 -3 0 14 0.89 M M 6.4 16 90 M M 4 32 110
18 88 76 82 0 0 17 0.24 M M 6.6 14 50 M M 5 20 110
19 88 76 82 0 0 17 0.13 M M 9.2 17 60 M M 4 22 60
20 88 77 83 1 0 18 0.14 M M 8.5 16 80 M M 2 24 70
21 85 75 80 -2 0 15 0.15 M M 9.5 17 80 M M 3 24 80
22 85 75 80 -2 0 15 0.18 M M 7.1 14 40 M M 3 3 23 40
23 85 76 81 -1 0 16 0.44 M M 4.7 17 80 M M 4 25 110
24 88 75 82 0 0 17 0.66 M M 6.7 16 110 M M 3 30 90
25 87 77 82 0 0 17 0.09 M M 6.0 10 110 M M 3 16 99
26 87 76 82 0 0 17 0.44 M M 5.1 13 140 M M 3 17 220
27 86 75 81 -1 0 16 T M M 4.1 10 70 M M 1 M M
28 85 75 80 -2 0 15 0.65 M M 6.6 15 80 M M 4 21 110
29 85 76 81 -1 0 16 0.13 M M 5.8 9 70 M M 2 M M
30 87 75 81 -1 0 16 0.21 M M 3.8 7 290 M M 4 M M
================================================================================
SM 2600 2268 0 490 12.34 M 198.8 M 97
================================================================================
AV 86.7 75.6 6.6 FASTST M M 3 MAX(MPH)
MISC ----> 23 30 39 110
================================================================================
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: SEPTEMBER
YEAR: 2025
LATITUDE: 13 29 N
LONGITUDE: 144-48 E
[TEMPERATURE DATA] [PRECIPITATION DATA] SYMBOLS USED IN COLUMN 16
AVERAGE MONTHLY: 81.1 TOTAL FOR MONTH: 12.34 1 = FOG OR MIST
DPTR FM NORMAL: -0.7 DPTR FM NORMAL: -2.83 2 = FOG REDUCING VISIBILITY
HIGHEST: 89 ON 12, 9 GRTST 24HR 2.09 ON 1- 1 TO 1/4 MILE OR LESS
LOWEST: 72 ON 16 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: 28
MAX 90 OR ABOVE: 0 0.10 INCH OR MORE: 23
MIN 32 OR BELOW: 0 0.50 INCH OR MORE: 9
MIN 0 OR BELOW: 0 1.00 INCH OR MORE: 3
[HDD (BASE 65) ]
TOTAL THIS MO. 0 CLEAR (SCALE 0-3) 17
DPTR FM NORMAL 0 PTCLDY (SCALE 4-7) 13
TOTAL FM JUL 1 0 CLOUDY (SCALE 8-10) 0
DPTR FM NORMAL 0
[CDD (BASE 65) ]
TOTAL THIS MO. 490
DPTR FM NORMAL -12 [PRESSURE DATA]
TOTAL FM JAN 1 4619 HIGHEST SLP 29.92 ON 1
DPTR FM NORMAL -11 LOWEST SLP 29.82 ON 1
[REMARKS]
#FINAL-09-25#