Idaho — Warm air hangs over the Treasure Valley this morning, softening the bite of winter and pushing Christmas toward record territory. Sunlight feels stronger than usual, and the season briefly tilts toward spring.
Across southwest Idaho, another round of record or near-record high temperatures is expected today. Boise climbs into the upper 50s, flirting with a long-standing December record, while Emmett, Glenns Ferry, Jerome, and Mountain Home also surge well above normal. Several locations may break records set more than a century ago, according to the National Weather Service in Boise.
The warmth does not come alone. Showers and a few thunderstorms may develop later today and into the evening as a disturbance approaches. Rainfall should be spotty, but any storms could produce brief downpours and gusty winds. Keep an eye on changing conditions if traveling later today.
By Friday, the pattern flips. A cold upper-level trough moves through the region, knocking temperatures down sharply and restoring a more seasonable feel. Highs retreat back toward winter norms, and showers linger, especially across higher terrain. Snow levels may lower in the mountains, though valley impacts appear limited for now.
Travelers heading out after Christmas should plan for wet roads today and cooler, unsettled weather Friday. Winds may pick up at times, particularly along open highways like I-84, where sudden gusts can affect high-profile vehicles.
This brief December warmth stands out, but it fades quickly. The weekend trends cooler and calmer, setting up a quieter stretch heading toward early next week.
What to know today:
• Dress in lighter layers, but keep rain gear handy.
• Expect changing road conditions later today.
• Prepare for colder air returning Friday.
More updates are expected as the colder system arrives. This Christmas warmth is impressive, but winter is not finished yet.
