The Weather converter program normally creates a DDY file containing SizingPeriod:DesignDay objects with data from the ASHRAE Handbook of Fundamentals 2009. Since no data is available for your location, you can use the use the data that is shown in the STAT file that is also generated to create SizingPeriod:DesignDay objects by hand. The AuxiliaryProgram documentation states:
Using the WMO field (or determining
it from the WBAN field), the Weather
Converter performs table look up in
the Design Condition files to see if
there are recorded design conditions
for the subject location. If this
location is found, then design day
objects are produced on the resultant
design day object (ddy extension) file
– ready for inclusion into an
EnergyPlus input data file. If no
design conditions are located, then
the design day object file will still
include a location object for
inclusion with EnergyPlus. However,
statistics using the weather file are
displayed to the statistics file –
these “can” be used to create your own
design day definitions but you should
read the warning that is issued and
take care if your weather file is only
a “single instance” weather data
representation.
Another option is to choose design day data from a location that is most similar, perhaps by comparing data from the STAT file. I would also suggest that you contact the vendor that provided you the data and see if they can provide design day data.