Late July on the MO
As we head into the final week of July, things have definitely taken a turn on the Missouri. Summer has arrived in full force, with daytime highs pushing 100 degrees over the next ten days and overnight lows only dipping into the 60s. While those cooler nights help, we’ve officially entered the dog days of summer—a time when trout fishing requires a different approach and, on some afternoons, the best decision may be to call it a day.

The biggest adjustment is a simple one: fish early. Morning temperatures have been pleasant, generally in the upper 50s to low 60s, and water temperatures are at their lowest. That makes it the best window for both anglers and trout.
By midday, the river is a different place. Leave the afternoon to the floaters and give the fish the opportunity to settle into the coolest water they can find. Water temperatures at Holter Dam have been running 65–67 degrees, with temperatures climbing steadily the farther downstream you travel. Those aren’t ideal conditions, so if you’re fishing, handle every fish with care and think seriously about wrapping things up once the water begins to warm.
Many Montana rivers are already under Hoot Owl Restrictions, with fishing closed from 2:00 p.m. until midnight. Those closures are based on science, typically taking effect after water temperatures exceed 73 degrees for three consecutive days. The Missouri has historically avoided Hoot Owl restrictions thanks to cold releases from Holter Dam, but with lower flows and prolonged heat, it’s certainly something we’re watching closely.
At Wolf Creek Angler, we’ve always taken a more conservative approach. Regardless of whether Hoot Owl restrictions are in place, we stop fishing once water temperatures reach 68–70 degrees. We’d rather leave a few fish uncaught today than compromise the quality of the fishery tomorrow.
If you’re heading out on your own, there are a few simple things you can do to help protect this incredible resource.
Fish the mornings. Even if Hoot Owl restrictions haven’t been implemented, the best fishing—and the healthiest conditions for trout—are almost always during the cooler hours. You’ll often find lighter boat traffic, better dry fly opportunities, and fish that recover much more quickly after release.
Carry a stream thermometer. They’re inexpensive, easy to use, and one of the most valuable tools you can have this time of year. Check the temperature frequently, especially as the day warms. When you see 68 degrees or higher, it’s time to call it.
Keep fish in the water. Every trout experiences some level of stress during the fight. Warm water only amplifies that stress. If you’d like a photo, keep it quick and, whenever possible, keep the fish submerged. A memorable picture is great, but a healthy fish swimming away is even better.
We’ll be watching conditions closely as we close out July and begin looking toward fall. If you have a trip scheduled with Wolf Creek Angler over the next couple of weeks, plan on early starts and expect us to end the day once water temperatures approach 68 degrees, whether or not official restrictions are in place.
We know these conversations aren’t nearly as exciting as talking about bugs, rising fish, or the next great hatch, but taking a thoughtful approach during the hottest weeks of the year is one of the best ways we can ensure the Missouri continues to fish the way we all love for years to come.




















