Wisdom / Melrose
Big Hole River
Live Conditions
Big Hole River — Near Melrose
7-Day Flow
↓ Falling
24-Hr Pressure
24.07 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☁️Overcast
59° / 35°
Tomorrow
🌤️Partly cloudy
52° / 27°
Wed
☁️Overcast
61° / 24°
Thu
☁️Overcast
62° / 39°
Cold front incoming — go deep with nymphs, surface activity likely slow.
Weather by Open-Meteo · No API key · Updated every 30 min
What should I fish today?
One call. Specific to today's exact conditions on the Big Hole River.
2
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Big Hole River conditions.
🪰 Hatch Calendar
Big Hole River · May · Late Spring
🟢 Active now at 51.1°F water
🟡 Approaching — within 5°F of trigger range
Select month
⚠ Runoff season — check live gauge before driving
EARLY-SEASON ARCTIC GRAYLING WINDOW — best month for native fluvial grayling before water warms. Salmonflies (size 4-6) starting late month when flows allow. RUNOFF SEASON peaks mid-month — plan around the gauge.
River Map
About Big Hole River
Last river in the lower 48 holding native fluvial Arctic Grayling alongside browns, rainbows, and brookies. Wild high-meadow freestone with classic Salmonfly and Golden Stone hatches in early summer.
Regulations
Native Arctic Grayling — handle with extreme care and release immediately. Hoot-owl restrictions (afternoon closures) and full emergency closures are common when water temps exceed 73°F in summer; check FWP daily before fishing in July–August.