STATION:  PAGO PAGO AP-AMERICAN SAMOA (NSTU), PI

CLIMATOLOGICAL SUMMARY.  Period of Record: Jul 1996 to Nov 2005

Summaries based on unedited daily ASOS data.  Errors may be present.

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TEMPERATURE (F)     |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Avg Max Temp        |  89.1  89.2  88.8  88.6  87.0  85.3  85.5  85.6  86.4  87.1  88.3  88.7 |   87.5
Avg Min Temp        |  77.6  77.4  77.0  78.4  78.3  77.5  77.3  77.2  78.3  78.2  77.6  77.7 |   77.7
Avg Temperature     |  83.3  83.3  82.9  83.5  82.6  81.4  81.4  81.4  82.3  82.7  83.0  83.2 |   82.6
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    95    95    94    95    93    89    91    92    91    94    95    94 |     95
                    |                                                                         |
    Date of Ext-Day |    08    03    01    14    04    20    23    17    02    24    18    03 |
               -Year|  1998  2002  2002  1998  2000  1998  1996  2002  1998  2001  1998  1998 |
                    |                                                                         |
    Extreme Min Temp|    72    73    73    72    70    68    70    70    72    72    72    73 |     68
                    |                                                                         |
    Date of Ext-Day |    20    25    28    04    24    18    04    13    01    23    17    21 |
               -Year|  1999  1997  1997  2004  1998  1997  2000  1996  1999  2002  1996  1998 |
                    |                                                                         |
Heating Degree Days |     0     0     0     0     0     0     0     0     0     0     0     0 |      0
Cooling Degree Days |   564   514   554   555   547   493   508   508   520   548   534   563 |   6408
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |  15.7  13.4  13.0   9.0   1.9   0.0   0.8   0.5   2.1   3.7   6.7  10.0 |   76.8
    Max Temp >= 75  |  31.0  28.2  31.0  30.0  31.0  30.0  31.0  31.0  30.0  31.0  30.0  31.0 |  365.2
    Max Temp <= 32  |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
                    |                                                                         |
    Min Temp <= 32  |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
    Min Temp <= 20  |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
    Min Temp  <= 0  |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
                    |                                                                         |
Avg Dew Point Temp  | ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### |  #####
Avg Wet Bulb Temp   | ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### |  #####
                    |                                                                         |
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                    |                                                                         |
Avg Sea Level Pres  | ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### |  #####
(Inches of Mercury) |                                                                         |
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                    |                                                                         |
WEATHER             |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
See disclaimer below|                                                                         |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Thunderstorms   |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
    Heavy Fog       |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
    Fog             |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
    Hail            |   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
                    |                                                                         |
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                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     | 10.36  9.68 12.03  6.90 11.27  5.64  4.27  4.03  9.81 11.00 10.39 11.21 | 106.59
                    |                                                                         |
Maximum Daily       |  6.59  6.99  5.19  3.27  8.60  4.30  3.86  2.66  3.79  5.75  3.50  3.34 |   8.60
                    |                                                                         |
    Date of Ext-Day |    10    27    06    19    12    13    15    21    15    10    17    15 |
               -Year|  1997  2000  2000  2002  1999  2003  2002  2002  1999  1996  2003  2000 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  21.8  21.4  23.3  17.9  17.8  17.0  16.2  15.8  18.9  20.8  20.6  21.6 |  233.1
    >= 0.10         |  15.5  12.5  15.9  11.3  12.1   8.9   8.4   7.9  12.9  12.5  13.8  14.2 |  145.9
    >= 0.25         |  10.5   8.2  11.7   6.4   8.4   5.4   4.3   3.9   8.8   8.6   9.8  10.5 |   96.3
    >= 0.50         |   5.8   5.3   8.0   4.1   5.8   3.5   2.5   2.0   5.5   5.8   7.3   7.0 |   62.8
    >= 1.00         |   2.3   2.7   3.4   2.0   3.9   1.5   0.7   1.2   3.3   3.5   3.3   3.3 |   31.3
                    |                                                                         |
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                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|  ####  ####  ####  ####  ####  ####  ####  ####  ####  ####  ####  #### |  #####
Daily Avg Max 2-Min |  14.6  14.0  13.1  13.1  14.9  16.6  15.7  16.6  18.3  16.0  14.6  14.9 |   15.2
Daily Avg Peak Gust |  20.8  20.2  19.1  17.8  19.5  21.8  20.2  21.0  23.7  20.6  19.5  20.6 |   20.4
                    |                                                                         |
Maximum Daily Avg   |  ####  ####  ####  ####  ####  ####  ####  ####  ####  ####  ####  #### |    0.0
                    |                                                                         |
Maximum 2-Minute Avg|    32    28    26    23    30    36    28    27    30    30    30    33 |     36
                    |                                                                         |
Date of Max 2min-Day|    07    13    14    27    26    13    26    25    10    16    23    31 |
               -Year|  1997  1997  1997  1998  2000  1997  2000  1998  1996  1998  2003  2001 |
                    |                                                                         |
Maximum Peak Gust   |    58    38    51    37    37    51    37    37    39    37    35    49 |     58
                    |                                                                         |
Date of Max Gust-Day|    08    13    14    24    26    13    24    12    09    12    17    31 |
               -Year|  1997  1997  1997  2002  1999  1997  2005  2002  1996  1996  1996  2001 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   2.8   2.3   2.7   0.7   1.8   3.2   1.3   1.1   4.7   2.2   1.0   1.9 |   25.8
   Peak Gust >=40   |   1.0   0.0   0.8   0.0   0.0   0.3   0.0   0.0   0.0   0.0   0.0   0.8 |    2.9
   Peak Gust >=50   |   0.2   0.0   0.4   0.0   0.0   0.2   0.0   0.0   0.0   0.0   0.0   0.0 |    0.7
                    |                                                                         |
   Max 2-Minute >=30|   0.3   0.0   0.0   0.0   0.1   0.2   0.0   0.0   0.2   0.1   0.1   0.0 |    1.1
   Max 2-Minute >=40|   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.0
                    |                                                                         |
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies.  Average days
with Thunderstorms may be low due to early mis-detection.

Heavy Fog = Visibility less than or equal to 1/4 mile.
Fog = Visibility greater than 1/4 mile or less than 7 miles.
Peak Gust = Maximum 5-second average.
Snowfall data not observed at ASOS stations.

Copyright ©2009 Western Regional Climate Center - Desert Research Institute - Reno, Nevada.