I'll give you one data point. Southern Arizona (like Tucson, Phoenix,
Sierra Vista etc), seems to have about 4 or 5 days a year that are not VFR
for most of the day.
You might have to dodge afternoon thunderstorms in the monsoon season
(usually July through about September).

--
Best Regards,
Mike

http://photoshow.comcast.net/mikenoel


wrote in message
...
Well, those are useful links for weather prep, but the motivation for
my question is more finding out about the regional statistics.

Supposing one were to move from where it's VFR 300 days a year to
someplace else -- the general weather pattern might be a
consideration. I might not want to move someplace like the west coast
of Oregon or Washington if it's IFR 300 days a year, even if it's a
beautiful place.

Yes, getting an IFR rating is great -- but I like to look down and see
the things ...

So, I was really after stats rather than current charts. Something
like in Aviation Weather where they have a chart that shows average
number of thunderstorms per year in the continental US.