Happy Monday Idaho!
A cold front is moving through southern Idaho and behind it a cold upper level low will be parked over the Pacific Northwest through the middle of the week. Sustained winds across the Snake River Plain are between 15-30mph and gusts to 50mph will be possible for areas east of Boise, including Elmore County, the Magic Valley, and Camas Prairie. A Wind Advisory is in effect through 7pm this evening. Be cautious if driving high profile vehicles on north-south oriented highways.
Temperatures will be unseasonably cool through midweek with highs in the low to mid 50s for the Treasure and Magic valleys, around 10-15 degrees below normal. The mornings will be especially chilly with temperatures falling to near or below freezing. Widespread frost and freeze is likely for the Snake River Plain. A Freeze Warning has been issued for eastern parts of the Magic Valley extending into eastern Idaho from 1am through 9am Tuesday morning. Temperatures could drop as low as 26° in these areas.
As the cold front moves through, scattered showers and thunderstorms are expected, especially north of I-84. Some showers may contain graupel. Snow showers will continue in the mountains, with snow levels dropping to 3000-4000 feet. There could be snow mixing in down to the valley floors on Tuesday. Breezy conditions will persist in the Magic Valley on Tuesday, with lighter winds in the Treasure Valley.
Shower chances diminish in the mountains later in the week as a weak high pressure ridge moves in. Temperatures will gradually climb back closer to normal. Stay warm and safe, Idaho!
