Bozeman / Big Sky
Gallatin River
Live Conditions
Gallatin River — At Gallatin Gateway
7-Day Flow
↑ Rising
24-Hr Pressure
25.45 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☁️Overcast
57° / 39°
Tomorrow
☁️Overcast
50° / 30°
Wed
☁️Overcast
62° / 29°
Thu
🌦️Drizzle
62° / 46°
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 Gallatin River.
9
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Gallatin River conditions.
🪰 Hatch Calendar
Gallatin River · May · Late Spring
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
⚠ Runoff season — check live gauge before driving
RUNOFF SEASON — Yellowstone Plateau and Madison Range snowmelt pushes flows. BWOs (size 18-20) early month. Plan for July onward — Highway 191 access easy but flows often unfishable.
River Map
About Gallatin River
Wade-only freestone flowing from Yellowstone Park through Big Sky to Three Forks (joining the Madison and Jefferson). Roadside pocket water along Highway 191 — accessible, scenic, and full of wild rainbows and browns.
Regulations
Wade-only — no float fishing on the Gallatin. Standard Montana fishing license required.