Current Conditions:
The Jefferson River is a little sleepy mid winter. Often ice shelves can make fishing a challenge, but during mild weather stretches good fishing can be found. With lower trout counts than some other area rivers, it doesn't always produce to the same degree but if in the area its worth a shot. Focusing on afternoons when water temps are elevated and going low and slow with nymph rigs is the ticket.
The Month Ahead:
The Jefferson will be in winter mode for several weeks and months. It is best avoided during cold snaps but can produce some surprises if targetted during mild winter days.