August can be one of the best months of year to fish many of our small streams...just be sure to pick streams that are in the mountains or in Yellowstone National Park. With the cooler weather upon us--but it won't last long--you might get a little extra mileage from some lower elevation streams, but the best action is still going to be on the higher elevation creeks.
There are a lot of options near Big Sky and Bozeman and these are good options to get away from it all and find some off the beaten path fishing. When fishing the small streams in Montana it is always important to be aware of the Montana Stream Access Law. We are fortunate to be able to recreate and fish on miles and miles of waters. If the small creeks or rivers you are looking to fish run through private property be sure to check out Montana Fish, Wildlife, and Parks Stream Access Law information here. The hopper fishing has been epic on some of our smaller stream ranch leases and will continue to do so until the first few frosts arrive in a month or so. A mixed bag of hatching insects has the trout looking up and dry fly fishing can be great. Those anglers that know the spring creeks can expect consistent hatches. If you are unfamiliar with the spring creeks, it can be a great idea to book a guide.
For consistent small stream fishing, consider the spring creeks such as DePuy's and Armstrong's. Small mountain streams are a better mid summer option as they are probably big with snowmelt runoff right now.
The Month Ahead
Fishing on lightly pressured small mountain streams or private ranch fisheries is often good all summer long since the trout have seen very few flies.
Long Term Fishing Forecast
Some smaller streams become pretty low and clear in August but they can still fish well with a stealthy approach and delivery.