March through November for lowland fishing and float trips on the Bighorn.
Species You Fish for by Season:
Spring: good baetis hatches on the Bighorn. Cicadas on the right years.
Summer in the mountains has the whole range of hatches compressed into a very short time—all the way from golden stones and green drakes to PMDs and midges. Golden trout are a specialty, but they don't succumb easily. It’s heavy on the hoppers in the lowlands.
Fall: We still have lots of hoppers around in the low country until they are diminished by frost. We also have clouds of tricos (especially on the Bighorn), followed by a really long season of baetis. Fall fishing is predominantly with streamers on the Bighorn.
Region/Terrain Where You Fish:
Wind River Mountain extended trips are generally at an elevation between 9,500 and 11,000 feet. Almost every species of trout can be found there in the nearly 3,000 glacially carved lakes and the small streams running between. Predominantly, we fish for cutthroat, brook, and golden trout (and hybrids). We access this true wilderness via backpacking, riding a horse, or walking with horses or llamas carrying the gear.
Lander's small streams are at 5,000 feet in elevation and are relatively easy to wade (we often wade wet). This is mostly brown trout fishing.
Our Bighorn River floats trips near Thermopolis focus on brown, rainbow, and cutthroat trout, with chunky, truly trophy-sized fish landed almost every day.
Typical Weather by Season:
Our region is high and dry. Most often people say, “I can't believe how good the weather was, especially in the Wind River Mountains.”
March, April, and May: cool and sunny, with the occasional snowstorm thrown in for free.
June, July, August: summer with low humidity, low moisture, and afternoon thunderstorms. Weather in the mountains can present the whole range, from snow to wind, to bright blue. Nighttime temperatures can drop as low as freezing and daytime can feel like 100 (although it is probably only 80). This is "be prepared for anything" country. Lowland streams, including the Bighorn, can expect sunny and warm (occasionally hitting 100).
September, October, November: mountain season ends in September with good possibilities of snow during the month. Lowland streams and the Bighorn often experience a wonderful "Indian summer." Very little precipitation falls during this time, but again we start to experience Western weather, with snow coming in October and November.