Seasons on the Green Winter is a fun and uncrowded time to fish the Green River if your clothing system can keep you warm. The surrounding mountains often get lots of snow but roads are kept open and the river itself seldom sees more than one foot of snow. Daytime temperatures fluctuate anywhere from -20 deg. Weather systems on the Green River usually come from the Salt Lake City direction and take about a half day to get there. Watch the weather reports and figure that the Green will be about a half day behind and about 15 degrees colder.
Spring brings ubiquitous baetis hatches and the trout group up for spawning as well.
It is the best time of year for large trout because they have been through winter with little fishing pressure. They move into shallows to begin spawning or to feed and you can spot-fish these large cruisers. Fish egg patterns, scuds, small nymphs and San Juan Worms to nymphing trout and olive duns, midges or emerges to risers. If the fish reject dry flies, use emerger or nymph versions. Summer brings crowds of recreational floaters but fishing stays good with pale morning duns, midges and caddis supplying the main hatches.