textproduct: Boise

UPDATE

Updated aviation discussion.

KEY MESSAGES

- Cool, dry, and breezy today with temperatures slightly below normal.

- Dry weather with warming temperatures Friday through Sunday.

- Cool and unsettled weather next week with mountain snow possible above 5000 feet. Significant snow accumulation possible above 6500 feet.

SHORT TERM /Through Saturday Night/

Issued 250 PM MDT THU MAR 26 2026 Breezy conditions continue this afternoon before subsiding after sunset tonight. A ridge of high pressure will build into the area with warmer and drier conditions for the weekend. Temperatures will warm 5-10 degrees on Friday and an additional 5 degrees on Saturday. Temperatures will warm to near record highs on Saturday.

LONG TERM /Sunday through Thursday/

Issued 250 PM MDT THU MAR 26 2026 Above-normal temperatures will persist to start the long-term period, as southerly flow begins to veer more westerly as the upper level ridge shifts east. This is in advance of an upper trough that will dig down from the British Colombia coast and swing the area into an unsettled weather pattern. Temperatures both Sunday and Monday will be 10-15 degrees above normal.

Come late Monday/early Tuesday, the aforementioned upper trough and its associated surface cold front will move across the Pacific Northwest. This will act to increase precipitation chances, bring breezy to gusty winds, and cool temperatures to near normal. Precipitation chances will increase through Monday afternoon, initially over higher terrain, before reaching 40-80% area-wide Tuesday. The unsettled pattern will continue through the week with embedded short-waves within the general troughing aloft. Come late week, there is good consensus on another low digging down the coast of British Columbia into our area. This will increase precipitation chances to 50-90% area-wide come Thursday afternoon. With cooler temps and lower snow levels, higher elevations will likely see snow accumulation. Elevations above 6000 ft MSL have a 60-80% chance of at least 4 inches of snow over the course of Wednesday and Thursday.

AVIATION /00Z Friday through Saturday/

Issued 555 PM MDT THU MAR 26 2026 VFR. Generally clear sky. Surface winds: W-NW 10-20 kt with gusts to 30 kt east of KMUO until 27/02Z, then variable less than 8 kt until 27/12Z, then becoming E-SE 6-12 kt. Winds aloft at 10kft MSL: NW 15kt until 27/12Z, then variable less than 8 kt.

KBOI...VFR. Clear sky. Surface wind NW 10-15kt until sunset, then variable less than 6 kt, then becoming SE 6-10 kt after 27/10Z.

Weekend Outlook...VFR. Increasing mid-high clouds Saturday, then broken-overcast high clouds Sunday. Breezy W-NW wind gusts up to 15-20 kt each afternoon, otherwise variable surface winds less than 12 kt.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.