It Cold Dang it Sort of..
Well here on my bend of the river we just had our first really cold snap of the year. I don't love it, but why let it effect on how much I fish right? Here are some things that will keep you happily a stream:
The great cold weather gear available now is absolutely amazing and will totally keep you comfortable out on the water. Some of my favorite items are soft shell micro fiber jackets, fleece under layering pieces, and windstopper fleece gloves.
A good stream thermometer will help you to locate water that is not too cold. Look for water at least above 40 degrees Fahrenheit for trout. You may have to find springs or tailwaters to find this kind of water in the coldest times.
Ice off paste won't make water defy physical laws but it will help. Just apply it to your rod guides and it will help. you will still need to de-ice but far less often.
A good guidebook and good maps will help you to plan excursions to locations with more sun. Whether that means a stretch of stream with more sun exposure or a stretch of water in the southern climes is up to you.
Which leads me to another point - even if frigidity is too much for you don't put the fly rod away; just head South. Tons of warmwater, saltwater, and Southern Hemisphere locations await. I know I'll be heading South this winter.
I hope to see you on the water. Whether bundled up or in shorts, it will be good times.