Climatological Report (Monthly)
Issued by NWS Tiyan, Guam

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CXGM50 PGUM 041527
CLMGUM


CLIMATE REPORT
NATIONAL WEATHER SERVICE TIYAN, GUAM
116 AM CHST THU OCT 5 2017

...................................

...THE GUAM INTERNATIONAL AIRPORT GU CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              94   09/06/2016
 LOW               70   09/13/1992
                        09/03/1992
                        09/17/1972
HIGHEST            91   09/25        MM      MM       94  09/06
                        09/22
                        09/19
LOWEST             75   09/28        MM      MM       76  09/28
                        09/14                             09/19
                        09/13
AVG. MAXIMUM     87.9              86.7     1.2     89.3
AVG. MINIMUM     76.9              76.2     0.7     78.5
MEAN             82.4              81.4     1.0     83.9
DAYS MAX >= 90     11               0.5    10.5       16
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        32.25   2013
 MINIMUM         8.94   2006
TOTALS          14.92             14.17    0.75    15.65
DAILY AVG.       0.50              0.47    0.03     0.52
DAYS >= .01        24              25.0    -1.0       28
DAYS >= .10        19              19.0     0.0       23
DAYS >= .50         7               9.1    -2.1       11
DAYS >= 1.00        4               4.3    -0.3        4
GREATEST
 24 HR. TOTAL    3.65   09/08 TO 09/08           09/28 TO 09/29
                                                          09/30 TO 09/30
                                                          09/30 TO 09/30
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    09/29(00) TO 09/29(00)
                                                 09/30(00) TO 09/30(00)0
                                                 09/30(00) TO 09/30(00)0

DEGREE_DAYS
COOLING TOTAL     530               493      37      574
 SINCE 1/1       4912              4480     432     5038

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST                        MM
LATEST                          MM
.................................................

WIND (MPH)
AVERAGE WIND SPEED              6.2
RESULTANT WIND SPEED/DIRECTION   3/090
HIGHEST WIND SPEED/DIRECTION    24/170    DATE  09/27
HIGHEST GUST SPEED/DIRECTION    32/180    DATE  09/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           21
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     86

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN               14     RAIN                      14
LIGHT RAIN               21     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      24     FOG W/VIS <= 1/4 MILE      1
HAZE                      6

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$


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