Augusta / Great Falls
Sun River
Live Conditions
Sun River — Near Vaughn
7-Day Flow
↓ Falling
24-Hr Pressure
26.21 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
🌦️Drizzle
66° / 48°
0.01"
Tomorrow
☁️Overcast
71° / 44°
Sat
☁️Overcast
82° / 49°
Sun
☁️Overcast
69° / 50°
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 Sun River.
2
Time of Day
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Sun River conditions.
🪰 Hatch Calendar
Sun River · June · Early Summer
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
⚠ Runoff season — check live gauge before driving
Peak runoff continuing early month. SALMONFLIES (size 4-6) possible in upper river late month. Golden Stones (size 6-8). Caddis (size 14-16). Post-runoff prime opening late June.
River Map
About Sun River
High-plains tailwater below Gibson Dam flowing east from the Rocky Mountain Front through Augusta to Great Falls. Underrated brown and rainbow fishery in classic prairie-meets-mountains country with light angling pressure.
Regulations
Standard Montana trout regulations apply on the Sun; upper sections near the Bob Marshall Wilderness may carry special regulations. Montana fishing license required. Verify current regs at fwp.mt.gov before fishing.