In prior years the IRS would give an expected day for your refund to arrive. With the changes this year the only thing they are saying is that it sould come in about 3 weeks. Minnesota should be more prompt. If you want to check on your refund click here:
IRS:
http://www.irs.gov/Refunds
MN:
https://www.mndor.state.mn.us/tp/refund/_/#1

IRS

MN Revenue

WI Revenue