Aside from the cloud cover, it has been a pleasant Friday with dry conditions and mild temperatures. Boise will reach near 70° for the rest of the afternoon, with overcast skies continuing into the evening. While a stray shower may be possible in south central Idaho, the Treasure Valley should stay dry.
A significant change in our weather pattern is expected late tonight as a strong cold front approaches. It will move through the Treasure Valley around daybreak on Saturday, bringing widespread showers, some of which could be heavy, through lunchtime. After the front passes, isolated showers and thunderstorms may develop in the afternoon and evening. While they will be widely scattered, there is the potential for brief downpours and lightning in these storms.
Temperatures will drop to closer to the seasonal average (57°) for Boise, with highs in the mid to upper 50s for the weekend and into next week. Sunday will be particularly blustery, with gusts up to 50mph in the Magic Valley. Unsettled weather will continue into Sunday, with rain chances decreasing to 20-40% through Tuesday before another round of widespread rain and mountain snow arrives on Wednesday and Thursday.
Behind the cold front, snow levels are expected to lower to around 4500-5000 feet by Saturday night. Accumulations of 3-6" are likely above 6000 feet throughout the weekend, with minor snowfall expected in the mountain valleys. Additional mountain snow is forecast for next week, especially on Thursday.
