Just to supplement this discussion, in the United States, one can consider
using the real-time meteorological data from the U.S. Climate Reference
Network:
http://www.ncdc.noaa.gov/oa/climate/uscrn/index.html
Specifically
to the OP's data needs, there are two stations in Michigan:
1) Michigan
State University, Chatham; and,
2) National Weather Service,
Gaylord.
I've used their data for Northeast US sites for a number of
years now. With regard to insolation, they only model global horizontal
insolation, however. You have to do some work to derive components you might
need.
-ted
--- In EnergyPlus_Support@yahoogroups.com,
"JV Dirkes II" <jvd2pe@...> wrote:
>
> Dear E+
forum,
>
> I'm busy trying to understand weather files well
enough to create one that runs well in E+ and contains the ACTUAL weather for
a period of interest (the utility billing periods for the most recent ~12
months)...
.