Get ready for a foggy and chilly week ahead! The jet stream is bringing a cold northerly flow of air that will dominate the region, bringing fog and low clouds to many areas. The Treasure Valley can expect patchy fog Monday night, with areas of fog developing by Tuesday morning.
While the fog will dissipate later Tuesday morning, it's likely to reform by Tuesday night and Wednesday morning. The good news is that the sun should come out by Wednesday afternoon, but valley temperatures will remain cooler and closer to seasonal averages.
Looking ahead to the rest of the week, an upper-level ridge will re-establish itself over the region on Thursday, maintaining a temperature inversion across much of the area. This pattern will contribute to continued stagnant air conditions throughout the day and the continued threat of morning fog.
A stronger disturbance will likely sweep through the region by Friday, bringing snow to the central mountains and eroding the inversion. Breezy winds and colder temperatures can be expected over the weekend.
Here's a quick look at my forecast:
Tonight: Patchy fog, with a low around 28.
Tuesday: Areas of fog, with a high near 38.
Tuesday Night: Patchy fog, with a low around 26.
Wednesday: Patchy fog before 11 am, then mostly sunny, with a high near 36.
Thursday: Sunny & cold, with a high near 35.
Friday: Mostly cloudy & cold, with a high near 32.
Saturday: Mostly sunny, with a high near 38.
Sunday: Mostly sunny, with a high near 36.
Monday: Mostly sunny, with a high near 35.
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