Big Horn Basin Bites: Trout, Walleye, and Fall Conditions

Artificial Lure here with your Big Horn, Montana fishing report for November 1st, 2025. Sunrise showed at 6:22 AM and you’ll catch the last light around 8:01 PM—plenty of time to work the water. Weather this morning is crisp and clear after that brief rain spell yesterday. We’re seeing a high expected near 66, partly sunny, with a light westerly breeze at 6 to 10 mph. It’s jacket weather at dawn but warms up by midday, and with low humidity around 23% out of Hardin, the air feels mighty fine. No tidal swings up here, since the Big Horn isn’t tidal, but water flows are steady and clear, setting perfect conditions for trout and walleye action. Fishing’s been solid with the fall bite picking up. Water temps have cooled, boosting oxygen and keeping those fish active, especially the rainbows. The latest stretch brought in good reports out of Bighorn Lake and the upper river near Fort Smith. Most are seeing steady numbers of rainbow trout in the 14 to 18-inch class, some fat browns biting deep, and a few walleye for the folks working slow jigs by the dam. Anglers using nymph rigs—think bead head pheasant tails and copper johns—are reporting strong numbers, especially in the late morning as the sun peeks over the rim. Afternoon bite’s best for tossing small streamers like olive woolly buggers or the trusty muddler minnow. Bait folks are picking up fish with nightcrawlers and cut-bait strips, though local wisdom says throw a bright spoon in fire tiger or perch, especially at first light. According to local guides, it’s also a good window for topwater dries. Blue-winged olives and midges are still hatching through midday, so don’t overlook a size 18 sparkle dun or Griffith’s gnat for some surface action. If you want to target bigger browns, swing a streamer low and slow along the undercut banks near Soap Creek. Stripers are rare, but an occasional smallmouth has made its way in where the river warms up by the recreation area. Hot spots today: - Just below Afterbay Dam—both wade and drift boat anglers are hooking up with ‘bows and browns. Small jigs tipped with plastic or a touch of bait are working, especially near slack water seams. - The Dryhead area on Bighorn Lake—offering deeper pools and solid structure for late-season walleye and the biggest trout of the season. Early risers have a definite edge. A heads-up from Montana Fish, Wildlife & Parks: white-tailed deer populations have had some die-off from hemorrhagic diseases in certain counties—not a major impact here along the Bighorn, but it’s keeping predator activity up near the water’s edge. Watch for more skittish fish and use longer leaders for a stealthier approach. Storm WildEye Curl Tail in fire tiger, as well as classic Panther Martin spinners, are selling well at the marina shops, and word is those have produced some impressive midday strikes. For fly anglers, stick with nymphing in the riffles through the morning. As things warm up, match the hatch on the flats, and don’t neglect thos This content was created in partnership and with the help of Artificial Intelligence AI.