STATION:  YAP AP-MICRONESIA (PTYA), PI

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

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

-----------------------------------------------------------------------------------------------

TEMPERATURE (F)     |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Avg Max Temp        |  87.5  87.6  88.3  89.3  89.6  88.6  87.9  88.0  88.4  89.0  88.6  87.3 |   88.3
Avg Min Temp        |  72.7  72.8  72.2  72.8  73.3  71.9  72.3  72.1  71.7  72.5  72.9  73.3 |   72.5
Avg Temperature     |  80.1  80.2  80.2  81.1  81.4  80.2  80.1  80.1  80.1  80.7  80.8  80.3 |   80.4
                    |                                                                         |
Extremes:           |                                                                         |
    Extreme Max Temp|    90    90    90    92    93    92    91    92    92    92    92    90 |     93
                    |                                                                         |
    Date of Ext-Day |    25    15    11    07    30    04    09    04    11    18    08    14 |
               -Year|  1997  1999  1999  1998  1998  1997  1996  2000  1998  1999  1999  1996 |
                    |                                                                         |
    Extreme Min Temp|    67    67    67    66    61    66    66    65    66    66    63    56 |     56
                    |                                                                         |
    Date of Ext-Day |    14    27    12    06    09    15    03    25    20    19    08    26 |
               -Year|  1999  2001  1999  2002  2002  1999  1998  1998  1998  2000  1996  1996 |
                    |                                                                         |
Heating Degree Days |     0     0     0     0     0     0     0     0     0     0     0     0 |      0
Cooling Degree Days |   468   430   472   482   509   457   469   467   452   487   473   475 |   5641
                    |                                                                         |
Avg Number of Days: |                                                                         |
    Max Temp >= 90  |   1.3   2.2   4.0  15.9  18.8  12.4   7.2   8.5  11.5  15.1  10.2   1.5 |  108.6
    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   | ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### |  #####
                    |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
Avg Sea Level Pres  | ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### ##### |  #####
(Inches of Mercury) |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
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
                    |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
PRECIPITATION (In)  |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Average Monthly     |  6.40  5.83  7.00  5.89  9.58 16.27 16.50 14.87 13.88 12.15  9.51 14.19 | 132.06
                    |                                                                         |
Maximum Daily       |  2.41  2.22  3.49  5.29  5.40  5.12  4.43  5.28  3.57  3.99  2.97  8.00 |   8.00
                    |                                                                         |
    Date of Ext-Day |    13    25    16    16    27    27    14    18    07    04    05    12 |
               -Year|  1997  2001  1999  2000  2000  2002  2000  2000  1996  1996  2000  1998 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
    >= 0.01         |  21.0  19.4  20.0  15.9  19.3  24.4  25.0  21.5  20.5  22.8  24.5  24.5 |  258.8
    >= 0.10         |  10.2  11.0  10.7   9.2  13.8  18.7  19.3  16.7  14.5  15.6  16.6  16.7 |  173.0
    >= 0.25         |   6.4   7.2   5.9   5.1   8.3  14.4  15.7  13.3  12.2  10.7  11.6  10.8 |  121.7
    >= 0.50         |   3.6   3.8   3.6   3.5   4.5  11.1  11.0  10.2   8.5   7.6   7.1   7.5 |   82.0
    >= 1.00         |   1.9   1.2   2.1   0.9   2.2   6.0   5.8   5.0   5.5   3.9   1.9   3.5 |   39.8
                    |                                                                         |
------------------------------------------------------------------------------------------------------
                    |                                                                         |
WIND (MPH)          |   Jan   Feb   Mar   Apr   May   Jun   Jul   Aug   Sep   Oct   Nov   Dec |   Year
                    |                                                                         |
Daily Avg Wind Speed|  ####  ####  ####   0.0   0.0   0.0   0.0  ####  ####   0.0   0.0  #### |  #####
Daily Avg Max 2-Min |  12.6  12.8  13.1  12.2  11.5  11.2  10.9  11.1  10.3   9.8  11.0  12.8 |   11.6
Daily Avg Peak Gust |  19.5  19.9  19.9  18.4  17.3  17.5  16.7  17.4  15.8  14.8  17.6  20.1 |   17.9
                    |                                                                         |
Maximum Daily Avg   |  ####  ####  ####   0.0   0.0   0.0   0.0  ####  ####   0.0   0.0  #### |    0.0
                    |                                                                         |
Maximum 2-Minute Avg|    18    20    34    17    17    19    24    22    19    23    26    36 |     36
                    |                                                                         |
Date of Max 2min-Day|    20    25    03    09    10    10    28    14    28    11    09    26 |
               -Year|  1997  1997  2002  2000  2000  2002  1997  2001  1998  1998  1996  1996 |
                    |                                                                         |
Maximum Peak Gust   |    30    35    66    27    30    31    30    34    28    36    48    64 |     66
                    |                                                                         |
Date of Max Gust-Day|    18    25    03    02    01    28    31    14    01    11    09    26 |
               -Year|  1999  1997  2002  1998  1997  2002  1997  1997  1996  1998  1996  1996 |
                    |                                                                         |
Avg Number of Days: |                                                                         |
   Peak Gust >=30   |   0.4   0.9   0.2   0.0   0.2   0.2   0.6   1.1   0.0   0.3   0.4   1.4 |    5.6
   Peak Gust >=40   |   0.0   0.0   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2   0.4 |    0.8
   Peak Gust >=50   |   0.0   0.0   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.2 |    0.4
                    |                                                                         |
   Max 2-Minute >=30|   0.0   0.0   0.2   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0   0.0 |    0.2
   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
                    |                                                                         |
------------------------------------------------------------------------------------------------------

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.