Madison River
Upper

Flows/Temperatures (as of September 24th; click the name for real-time numbers)

Hebgen Outflow - 716 CFS

Kirby - 924 CFS
Kirby High/Low Temps - 61/54F

Cameron - 938 CFS
Cameron High/Low Temps - 60/53 F

This Week's Weather Forecast in the Valley

Upper Madison
Conditions on the Madison have just continued to get better. Bite windows are opening up to span pretty much the entire day, and fish are much less picky about their meals. I drove through the valley on Wednesday and the amount of baetis that coated my front bumper was shocking, so the dry fly fishing oppurtunities have by no means waned.
Aside from smaller mayflies, larger attractors like Chubby Chernobyls have been getting a good amount of hits! A dry dropper setup is a great option, especially as this sun persists for the next few days. As far as nymphs go, fish have been go for a much wider span of flies; baetis, perdigons, and general emergers are all working quite well these days.

Dry Flies - Chubby Chernobyl, Purple Haze, Tilt Wing BWO, Trina's Hopper
Nymphs - Magic Fly BWO, Lightning Bug, Split Case, Olive Hotspot

Flows/Temperatures (as of September 17th; click the name for real-time numbers)
Hebgen Outflow - 759.9 CFS

Kirby - 864 CFS
Kirby High/Low Temps - 62/53F

Cameron - 926 CFS
Cameron High/Low Temps - 60/54 F

This Week's Weather Forecast in the Valley

Upper Madison
Fall is settling into the valley in truth now. We've got some rain rolling through this weekend, and with temps below freezing most nights, the Madison is falling into its usual late-season patterns. Fishing is a bit slow to start up in the mornings, with the bite turning on around 10-11 am in my experience, and getting better as the air warms up.
The dry fly bite has slowed but is by no means done, with the periodic BWO hatches and caddis bringing eager rises in the slicks and along the banks. Hoppers can still bring a fish up as well, but from my experience, fish are much more tentative to rise on foam than they have been in weeks past. Nymphing is the most productive method (as usual, I know), with smaller mayfly emergers and general attractors being the ticket if fishing is slower. As this rain continues, streamers/swung flies will gain traction and attract those fish eager to eat before the true cold arrives!

Dry Flies - Winna Spinna, Ant Acid, Arricks Flying Ant, Parachute Adams
Nymphs - Olive Hot Spot, Sunburst Perdigon, BBQ Baetis, Red Neck