fishing the Big Horn in late March

I have an opportunity to fish the Big Horn in Montana in late March. What’s it and the weather like that time of the year? What kind of fly fishing should I expect to do and what flies would you recommend?
Thanks for your help.

You might use this as a guide: [url=http://www.flyanglersonline.com/features/eotg/eotg87.html:099b7]http://www.flyanglersonline.com/features/eotg/eotg87.html[/url:099b7]


LadyFisher, Publisher of
FAOL

March avg. high 54, low 28, precip 1.39 in.
Sowbugs, scuds, midges for sure. Probably some Baetis. Hell it’s “The Horn” it’ll be GREAT!!!