WFO Monthly/Daily Climate Data
Issued by NWS Tiyan, Guam

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CXGM50 PGUM 020334
CF6GUM
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)

                                          STATION:   GUAM INTERNATIONAL AIRPORT
                                          MONTH:     DECEMBER
                                          YEAR:      2021
                                          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  75  80  -2   0  15 2.66  0.0    0  6.1 22 120   M    M   6        30 120
 2  86  75  81  -1   0  16 0.10  0.0    0  8.1 16 110   M    M   2        22 110
 3  86  75  81  -1   0  16 0.00  0.0    0  7.7 20 110   M    M   2        27 110
 4  87  75  81  -1   0  16 0.00  0.0    0  7.3 14  80   M    M   1        17  90
 5  87  76  82   0   0  17 0.37  0.0    0  9.0 16  40   M    M   4         M   M
 6  86  76  81  -1   0  16    T  0.0    0  8.9 16  80   M    M   3        24  90
 7  84  73  79  -3   0  14 0.34  0.0    0  9.0 29 110   M    M   3        38 120
 8  87  79  83   1   0  18    T  0.0    0 10.7 17  80   M    M   3        23  90
 9  87  78  83   1   0  18 0.14  0.0    0 10.3 25  60   M    M   4        29  50
10  87  79  83   1   0  18    T  0.0    0 11.8 21  80   M    M   2        24  60
11  87  78  83   1   0  18    T  0.0    0 11.6 21  80   M    M   3        25  70
12  86  76  81  -1   0  16 0.05  0.0    0 12.7 25  80   M    M   5        31  80
13  86  75  81  -1   0  16 0.09  0.0    0 18.5 23 100   M    M   4        33  70
14  84  78  81  -1   0  16 0.02  0.0    0 14.2 22 100   M    M   6        29  90
15  86  78  82   0   0  17 0.01  0.0    0 15.2 25  70   M    M   3        32  80
16  85  75  80  -2   0  15 0.11  0.0    0 13.1 25  70   M    M   5        29  60
17  85  75  80  -2   0  15 0.11  0.0    0 12.2 23  60   M    M   2        33  70
18  87  75  81  -1   0  16 0.09  0.0    0 11.1 20  60   M    M   3        26  80
19  87  76  82   0   0  17 0.06  0.0    0 10.7 26  60   M    M   4        33  60
20  85  76  81   0   0  16 0.01  0.0    0  9.5 21  80   M    M   3        24  60
21  87  74  81   0   0  16 0.07  0.0    0  9.6 18  70   M    M   4        24  80
22  86  75  81   0   0  16 0.01  0.0    0  7.5 16  90   M    M   5        18  90
23  87  74  81   0   0  16 0.00  0.0    0 10.0 22  50   M    M   1        26  60
24  85  72  79  -2   0  14 0.21  0.0    0 13.3 28  50   M    M   6        34  60
25  86  79  83   2   0  18    T  0.0    0 13.1 22  80   M    M   2        26  60
26  87  78  83   2   0  18 0.00  0.0    0 11.9 18  70   M    M   1        23  70
27  86  76  81   0   0  16 0.01  0.0    0 13.9 23  40   M    M   4        28  50
28  86  77  82   1   0  17    T  0.0    0 15.2 24  50   M    M   5        32  50
29  87  78  83   2   0  18 0.00  0.0    0 14.6 26  50   M    M   2        33  50
30  86  75  81   0   0  16 0.01  0.0    0 11.4 21  70   M    M   2        27  50
31  87  73  80  -1   0  15    T  0.0    0 10.3 21  60   M    M   4        27  50
================================================================================
SM 2670 2354         0 506  4.47  0.0    348.5          M      104
================================================================================
AV 86.1 75.9                              11.2 FASTST   M    M   3    MAX(MPH)
                                 MISC ---->    29 110                 38 120
================================================================================
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:     DECEMBER
                                          YEAR:      2021
                                          LATITUDE:   13 29 N
                                          LONGITUDE: 144-48 E

[TEMPERATURE DATA]      [PRECIPITATION DATA]       SYMBOLS USED IN COLUMN 16

AVERAGE MONTHLY: 81.0   TOTAL FOR MONTH:   4.47    1 = FOG OR MIST
DPTR FM NORMAL:  -0.6   DPTR FM NORMAL:   -0.83    2 = FOG REDUCING VISIBILITY
HIGHEST:    87 ON 31,29  GRTST 24HR  2.94 ON 30- 1      TO 1/4 MILE OR LESS
LOWEST:     72 ON 24                               3 = THUNDER
                        SNOW, ICE PELLETS, HAIL    4 = ICE PELLETS
                        TOTAL MONTH:   0.0 INCH    5 = HAIL
                        GRTST 24HR  0.0            6 = FREEZING RAIN OR DRIZZLE
                        GRTST DEPTH:  0            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:  19
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   8
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   1
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1

[HDD (BASE 65) ]
TOTAL THIS MO.     0    CLEAR  (SCALE 0-3)  14
DPTR FM NORMAL     0    PTCLDY (SCALE 4-7)  17
TOTAL FM JUL 1     0    CLOUDY (SCALE 8-10)  0
DPTR FM NORMAL     0

[CDD (BASE 65) ]
TOTAL THIS MO.   506
DPTR FM NORMAL    -7    [PRESSURE DATA]
TOTAL FM JAN 1  6286    HIGHEST SLP 29.85 ON  1
DPTR FM NORMAL   177    LOWEST  SLP 29.72 ON  1

[REMARKS]
#FINAL-12-21#


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