We just got back from the New York's Salmon River. It was the coldest i've ever fished.Never got above 32 degree's most day's started in zero to single digit's. Cell phone didn't work 2 day's b/c of the low temp's & these day's we got into the biggest fish of the trip. Everyday was a different pattern that worked best. Small Pheasant Tail's, small Black Stone's to small Brown Nymph's.