Yesterday, cloud cover increased throughout the day, leading to light afternoon snow showers in favored locations. Balmy temperatures reached the 20s and lower 30s F, and light to moderate S-SW winds blew on the ridgetops. As of 5 AM, the northern and western mountains received about 2-4" of snowfall while the mountains near Galena, Ketchum, and Fairfield picked up 1-2". Overnight, temperatures cooled abruptly to the single digits and teens F as skies partially cleared. Light to moderate winds shifted from SW to W-NW.
Today, a weak northwesterly flow will bring variably cloudy conditions to the forecast area. The Banner Summit area, Sawtooth, and western Smoky Mtns could get a dusting of new snow while the Wood River Valley will likely see a fair amount of sunshine. Pass level temperatures will reach the teens and 20s F, and light to moderate, W-NW winds blow on the ridgetops (strong in the Soldiers).
Tonight, cloud cover will increase. Some locations may get a trace-2" of new snow. Expect ridgetop winds to decrease to light speeds and shift more westerly, and temperatures could warm slightly or hover in the teens to lower 20s F.
Thursday, look for partly to mostly cloudy skies, warmer temps in the 20s and lower 30s F, and light to moderate westerly winds.