Fog is affecting much of the Treasure Valley this morning, with the thickest pockets from Ontario through Nampa. Visibility is down to a quarter mile in spots, so if you’re commuting early, plan for extra time and slowdowns. Boise has stayed mostly clear thanks to light east winds, but there’s still a chance the fog drifts in later this morning.
Once we get into the afternoon, fog and low clouds lift and we’ll see quieter weather. A few light mountain showers are possible, mainly snow above 5,000–6,000 feet, but the valleys stay dry and mild — still running about 10° warmer than normal.
Fog is likely again tonight, and may spread farther east into more of the Treasure Valley. Another round of slow-going travel is possible Wednesday morning.
Through Thursday, temperatures stay 5–10° above normal with only small chances for mountain showers.
By Sunday into Monday, a stronger system moves in from the Pacific Northwest. This brings higher chances for rain and mountain snow, cooler temperatures, and the end of our quiet, foggy stretch.
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