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

- Continued warm, dry, and breezy through Friday with temperatures around 10 degrees above normal.

- Dry cold front Friday afternoon leading to slight cooling Saturday.

- Temperatures warming to 15-20 degrees above normal next Sunday through Wednesday.

SHORT TERM /Through Sunday Night/

Issued 356 AM MDT FRI MAY 8 2026 A ridge of high pressure will remain over the area through the short term with breezy northwest winds during the afternoons. Areas of smoke possible from fires in OR. A system will pass by to the north on Friday afternoon, bringing breezy conditions and slightly cooler temperatures on Saturday. The upper level ridge rebounds quickly on Sunday with much warmer temperatures. Some locations in the Snake Basin and lower valleys will reach 90 degrees for the first time this year.

LONG TERM /Monday through Friday/

Issued 356 AM MDT FRI MAY 8 2026 The long-term forecast period will continue to see unseasonably warm and dry conditions. A weak and dry cold front will steer across the region early Monday and bring breezy afternoon winds. A strong ridge of high pressure will build into the region Tuesday through midweek, bringing temperatures 15-20 degrees above normal, with temperatures in the Snake Plain potentially reaching the mid 90s on Tuesday. Considerable uncertainty remains over the next pattern midweek through the end of the week, with long-range ensembles still indicating some likelihood of southwest monsoonal moisture steering into the area or a potential shortwave trough digging from the west coast and bringing a cooling trend.

AVIATION /12Z Friday through Saturday/

Issued 613 AM MDT FRI MAY 8 2026 VFR. Band of SCT-BKN high clouds moving in from west. Surface winds: generally variable under 10 kt this morning, except W-SW 5-15 kt over Magic Valley, then NW 10-20 kt in the afternoon/evening with gusts up to 30 kt. Winds aloft at 10kft MSL: W-NW 15-30 kt.

KBOI...VFR. Surface winds: variable under 8 kt through late morning then NW 8-12 kt with gusts up to 20 kt in the afternoon/evening.

Weekend Outlook...VFR. Surface winds W-NW 5-10kt with gusts up to 25 kt near KMUO/KTWF/KJER Saturday afternoon/evening, becoming SW-SE 5- 15kt Sunday. A cold front late Sunday will return NW gusts of 20-30 kt.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.

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