Canoes were parked where you're walking now. Sometimes it snows. Southeast citizens celebrate the climate at the Southeast Alaska Rain Festival, Jan. 1 to Dec. 31. Around these parts, any day without rain is considered a sunny day. Juneau is in the U.S.A., so American currency is the standard.
Canadian cash is also welcome.
Look for Fair Exchange rate signs. Don't be surprised if a cashier gives you Canadian coins for change. The two currencies mingle freely here. Only if you plan to continue your journey to Canada, Russia or the Far East. It's a form of English with a little local color.