textproduct: Boise

UPDATE

Updated aviation discussion.

KEY MESSAGES

- Clear, warmer, drier, and much less windy today and Friday, then temperatures holding level Saturday and Sunday. - Warmer again starting Monday, becoming hot mid-week.

SHORT TERM /Through Saturday Night/

Issued 234 AM MDT THU JUN 11 2026 Sunny, warmer, drier, and much less windy today, as Pacific high pressure aloft builds inland and yesterday's short wave trough moves out across the northern plains. After a cold start this morning, high temps today should be about 15 degrees warmer than yesterday in northern areas, and about 8 degrees warmer in southern areas. The warming trend will continue Friday ranging from 5 degrees in the north to 10 degrees in the south. Thus, added together, Friday should be 20 degrees warmer than yesterday just about everywhere, with continued clear skies and light diurnal winds. On Saturday a Canadian short wave will move through Montana, close enough to halt the warming trend in our CWA and generate moderate northwest winds.

LONG TERM /Sunday through Thursday/

Issued 234 AM MDT THU JUN 11 2026 By Sunday the Montana short wave trough will be gone and the warming trend will continue, peaking Wednesday and Thursday when high temps will be in the 80s in the mountains to mid 90s in the lower valleys, with a 15-20 percent chance of reaching 100 degrees south of Mountain Home. West/northwest flow aloft should keep monsoon moisture well to our south in Nevada and the California Sierra Nevada.

AVIATION /12Z Thursday through Friday/

Issued 551 AM MDT THU JUN 11 2026 VFR. Patchy IFR due to fog in central ID valleys until 15Z, otherwise clear. Surface winds:

light diurnal less than 10 kt. Winds aloft at 10 kft MSL: NW 5-10 kt.

KBOI...VFR. Clear skies. Variable wind less than 8 kt.

Weekend Outlook...VFR. Generally clear skies. NW surface wind 5-15 kt.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.