textproduct: Boise

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

UPDATE

Updated aviation discussion.

KEY MESSAGES

- A cold front with scattered showers and isolated thunderstorms will move east of the area early this evening.

- Showers continue in the mountains tonight through early Tuesday with a light dusting of snow expected above 6000 feet elevation.

- Gradual clearing by late Tuesday with temperatures several degrees below normal in the cooler air behind the front through Wednesday.

- Next best chance of widespread precipitation this weekend.

SHORT TERM /Through Wednesday Night/

Issued 154 PM MDT MON OCT 26 2026 isolated thunderstorms along a cold front moving west to east through southwestern Idaho will taper off early this evening in most areas. However shower activity will continue in the central Idaho mountains tonight, Snow levels will lower behind the front and a light dusting of snow will occur in the mountains above 6000 feet by Tuesday morning. Gradual clearing will occur on Tuesday with temperatures expected to be be a few degrees below normal in the cooler air behind the front through Wednesday.

LONG TERM /Thursday through Monday/

Issued 154 PM MDT MON OCT 26 2026 Thursday as upper flow backs from westerly to southwesterly ahead of the next deep upper low off the WA coast. Showers developing Thursday night as the low comes inland. Surface cold front and widespread showers in western ID Friday, along with lowering snow level. Partial clearing and colder Friday night, then rain and snow showers again Saturday as the upper low comes in. Clearing, windy, and cold Monday under strong northwest flow aloft behind the eastward-exiting upper low.

AVIATION /00Z Tuesday through Wednesday/

Issued 554 PM MDT MON OCT 26 2026

Generally VFR. Scattered showers and isolated thunderstorms, decreasing from W to E tonight. Low VFR or MVFR in clouds and precipitation, except IFR in snow. Snow level: 5.5-6.5kft MSL. Mtns obscured. Patchy fog and areas of low stratus overnight. Surface winds: variable 5-15 kt. Gusts to 15-30 kt with showers this evening. Winds aloft at 10kft MSL: W-SW 15-25 kt.

KBOI...Showers and a 10% chance of lightning until approximately Tue/01Z. Surface winds: variable 10-15 kt with shower activity, then SE 3-8 kt overnight.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.

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