Sunny, with a high near 91. Heat index values as high as 97. South wind 8 to 15 mph.
Looks like summer is trying to desperately hold on.  This is the last hot day in a while.  Fortunately the earlier summer was cool and rainy which means water flows and temperatures are actually still good as of today.  Just fish early and late and avoid the mid day heat.
  Creeks are clear to stained and flows are quite good for early fall.
Fish are eating midges and trico spinners in the mornings, then seeking shade and deeper water during the day time.  Fishing a small foam attractor pattern or a terrestrial neat the bank can be deadly this time of year.  Especially if you have a bead head tied below your terrestrial!
  Fish will eat subsurface all day.  Just make sure that your patterns are heavy and bouncing on the bottom.
In the evening fish are eating on the surface again (once the sun goes behind the bluffs).  Try fishing a midge, cranefly, or mayfly emerger for best success.
Also, do not overlook night fishing right now.  Putting on a headlamp and hiking back to some slower flowing pools and tossing a mouse pattern on the surface or large leech subsurface can be excellent!