Boise is waking up to clear skies and temperatures around 41 degrees Thursday, but the November warm spell still has one more impressive afternoon in store. Sunshine will push temperatures near 69 degrees before showers move into the area Friday night.
Thursday should remain mostly sunny, with south-southeast winds of 9 to 15 mph. Friday is forecast to be partly sunny, with showers moving into the area Friday night and southeast winds of 15 to 25 mph and gusts to 35 mph. The National Weather Service’s Boise forecast gives the updated conditions and timing.
The warmth is close to a daily record: Boise’s Nov. 12 record high is 70 degrees, set in 1999, while the current forecast calls for 69. The National Weather Service describes the broader stretch as near-record warm, with lower-valley highs in the mid-60s to around 70. That puts the brief November warmth nearly level with a mark that has stood for more than a quarter-century. Boise’s Nov. 12 temperature record is listed in the agency’s Public Information Statement.
Showers Arrive Friday
Rain chances are 80% Friday night. Southeast winds of 15 to 25 mph could gust to 35 mph Friday. The latest Boise forecast lists the Friday-night precipitation chance and wind gusts.
Most of the valley precipitation should fall as rain, while snow is mainly expected in the higher mountains as snow levels drop overnight. Lower elevations should see rain as snow levels drop overnight.
The shift comes as a Pacific system pushes an eastward-moving cold front through the region Friday night. The National Weather Service forecasts precipitation chances of 50% to 90% across its forecast area, with 0.05 to 0.25 inch possible in lower elevations and 0.20 to 0.50 inch in the mountains. Snow levels are forecast to fall from 7,000–8,000 feet to 6,000–7,000 feet, keeping the valley precipitation mainly rain while bringing a few inches of snow to higher mountains. The Boise forecast discussion describes the system as quick-moving.
Cooler Weekend Leads Into A Wetter Week
Saturday will be mostly sunny and cooler, with a high near 56 degrees and light west-northwest winds. Sunday will be partly sunny with a high near 60 degrees; a 20% chance of showers begins Sunday night after 11 p.m. Monday brings mostly cloudy skies, a high near 55 and a 50% chance of showers. The National Weather Service’s updated Boise forecast lists the weekend and Monday outlook.
Showers remain possible Tuesday and Wednesday, with highs near 52 degrees both days, according to a general Treasure Valley outlook. No watches, warnings or advisories are listed for Idaho or Oregon in the Boise forecast discussion, but drivers should be ready for wet pavement Friday night. The latest Boise forecast discussion lists no watches, warnings or advisories.
