As usual in the Mountains of SW Montana, it is impossible to guess weather patterns. The last four or five days have seen exceptionally warm weather for April. As a result, many streams have come up substantially and gotten off color. When that happens you must look for alternatives to the normal spring fishing.
The Big Hole, Jefferson, Ruby and Lower Beaverhead are all up and showing some color. Fishing will slow down on these streams. You need to think about fishing spring creeks and stillwater fisheries.