textproduct: Boise

KEY MESSAGES

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

- Dry weather with warming temperatures Friday through Sunday.

- A cool and unsettled weather pattern sets up for next week with mountain snow possible above 5000 feet.

SHORT TERM /Through Saturday Night/

The cold front has pushed into eastern Idaho early this morning, with gusty northwest winds in its wake. Gusts of 30 to 40 mph will continue through mid-morning along the I-84 corridor between Baker City and Ontario and areas east of Boise. Surface and mid-level support for the wind will weaken through the day, resulting in diminishing speeds this afternoon. It will remain breezy east of Mtn Home with gust potential of 30 mph through sunset. High temperatures will run 15-25 degrees cooler than yesterday for most sites placing them around 5 degrees below normal. This will set up a chilly night as light winds and mostly clear skies allow for sub-freezing low temperatures across the entire area Friday morning.

Heading into the weekend, temperatures are back on the rise, responding to a zonal flow/low amplitude upper ridging. Temperatures will return to around 10 degrees above normal by Saturday which will put valleys into the low 70s. While dry, the mostly westerly flow will supply plenty of moisture aloft, so expect periods of mid-high clouds.

LONG TERM /Sunday through Thursday/

Upper-air flow will be southwesterly to begin the period, caused by an incoming upper-level trough into the Pacific NW and the upper- level ridge axis over the eastern Rockies/Great Plains. Above-normal temperatures will linger in the area Sunday (10-20 degrees above) and Monday (10-15 degrees above) before a shift to a much more unsettled pattern. By mid-to-late Monday, most models agree on the upper-level trough axis moving onshore, with continued upper-level shortwaves continuing to move onshore through the extended. This will cause temperatures to be near- normal, bring widespread precipitation chances (especially Tuesday onwards), and return snow to the higher elevations. Breezy to gusty winds will also stick around following the initial cold front late Monday/early Tuesday. Significant variance currently exists among the clusters, namely in the intensity of these upper-level shortwave troughs. The intensity will drive the extent of the intrusion of colder air, higher precipitation chances, and the extent to which we stay in this pattern. Regardless, a much-needed seasonable pattern shift is on the horizon.

AVIATION /06Z Thursday through Friday/

Issued 1151 PM MDT WED MAR 25 2026 Generally VFR. Patchy blowing dust this afternoon as post frontal surface winds remain strong through the Upper Snake Plain. Surface winds: W-NW 10-20 kt with gusts 20-35 kt behind a cold front moving through overnight. Winds decreasing by late this afternoon. Winds aloft at 10 kft MSL: W-SW 25-40 kt, becoming W-NW 25-40 kt after 12z/Thu.

KBOI...VFR. Surface winds: NW 10-15 kt with gusts near 20 kt.

BOI WATCHES/WARNINGS/ADVISORIES

ID...None.

OR...None.