The smaller streams around Montana are very dependent on weather this time of year. Most of the mountain streams will be snow and ice covered until April or so. If you find a small spring creek to access, these can be great winter spots due to the constant water temperature.
The Month Ahead:
Small streams will stay in winter mode usually until April when things start to thaw out.
Long Term Fishing Forecast:
Most of the small mountain streams are best fished in the heat of the summer due to the cold water they provide when the bigger rivers heat up. Unless there is a spring, it is probably best to focus fishing efforts on the larger freestones and tailwaters.