textproduct: Boise

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 206 PM MDT THU MAY 7 2026 A nearly stationary ridge of high pressure remains anchored along the coast, keeping the region warm and dry through Friday. Temperatures will remain 5 to 10 degrees above normal for early May, with highs reaching the mid 70s to low 80s in the lower valleys. Surface winds will remain breezy during the afternoon hours, generally from the west or northwest at 10 to 20 mph with gusts up to 30 mph, especially within the Snake Basin. A weakening upper level trough moving through the Pacific will push a dry cold front across southeast Oregon and southwest Idaho Friday afternoon and evening. While the front lacks the moisture to produce precipitation, it will bring a period of increased winds. Winds will gust to around 30 mph behind the front Friday evening before tapering off overnight. Saturday will see a slight reprieve from the heat as temperatures drop closer to seasonal averages, though the cooling will be brief. By Saturday night, the ridge begins to re-amplify over the western United States, setting the stage for a significant warming trend heading into the second half of the weekend.

LONG TERM /Monday through Friday/

Issued 206 PM MDT THU MAY 7 2026 Amplifying ridging over over the western CONUS will give way to the warmest temperatures of the season through the long-term period. A "cold" front late Sunday will offer just a few degrees of cooling and breezier conditions for Monday. Throughout the period, temperatures will be 15-20 degrees above normal, with temperatures in the Snake Plain ranging from 85 to 95 degrees. Some monsoonal moisture could work its way into our area by mid-week next week. Although uncertainty is higher in that solution.

AVIATION /06Z Friday through Saturday/

Issued 1214 AM MDT FRI MAY 8 2026 VFR with few to scattered high clouds overnight. Surface winds: variable or SW 5-10 kt overnight through morning, then W-NW 10-20 kt in the afternoon/evening with gusts 25-30 kt. Winds aloft at 10kft MSL: W-NW 15-30 kt.

KBOI...VFR. Surface winds: variable 3-8 kt overnight through 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.