The 10-day weather forecast for Columbia Falls, Montana is expected to be overcast, with partly cloudy conditions early on, followed by a few snow showers after midnight. The forecast includes a mixture of rain and snow mixed with snow throughout the day, with a steady rain in the morning, tapering to showers and becoming mixed with rain in afternoon. Snow in the evening will mix with rain at times overnight, with an expected 1 to 3 inches of snow expected. The weather forecast also includes a potential winter storm, with temperatures expected to reach highs of 37.