Question-and-Answer Resource for the Building Energy Modeling Community
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As far as I'm aware, the only option is to interface with the EPlusWth.dll file as described here: https://bigladdersoftware.com/epx/docs/9-2/auxiliary-programs/advanced-use-accessing-weather-conversion.html#advanced-use---accessing-weather-conversion-capabilities
It has some example code for interfacing with it from Visual Basic or Fortran.
There's also an example for C# here: https://unmethours.com/question/28862/calling-epluswthdll-from-c-programs/
