The Lower Deschutes is trending well, but we had a few tougher trips through there last week. The Deschutes is moody and we also had some weather fronts pass through and that, as we know can put the fish off the regular bite. On the warm and calm evenings the dry fly action is magical. It is mostly Tan Caddis, but #14 Pale Evening Duns and #16 Pale Morning Duns could be equally as important as the caddis, maybe more so. 
Do you have a Fin Fetcher Caddis in your fly box? Too many people quit fishing too early in the evening because they can’t see their fly anymore. I like that Fin Fetcher because it shows up better with the hot pink parachute post. Purple Haze is another great evening Deschutes fly and in a #14 it will be consumed by a confused trout thinking he just nibbled on a PED. Surprise. Don’t forget the X Caddis and Corn Fed Caddis and Missing Link Caddis too as these are solid, modern dry flies for the best approach. 
Pale Morning Duns on the Deschutes can sometimes be quite orange, and we sell 2 colors of Comparaduns, one with a traditional light yellow toned dubbing, and the other with a sulphur orange body which is a wringer for the summer PMD’s here and on the Middle Deschutes too. Add sulphur’s to the collection. 
During the day I’d anticipate just a little dry fly action, mostly in the back eddies. So, during the day you’ll be fishing a lot of nymphs, and that may continue to dusk if the evening hatches are knocked down by wind. Caddis Pupa Tan #14-16 and Grey #18, PT’s #12-18, Micro May #16-18, Psycho Prince #14-16, Red Ass Soft Hackle and PT Soft Hackle #14-16 and Yellow Soft Hackles #16 which fish really well deep with split shot or as a dropper fly with a big beaded nymph as the point.