Boise, Idaho – Boise residents should brace for a string of hot, dry days starting Sunday, with 90°+ temperatures expected every day through the 4th of July.
According to the National Weather Service, Sunday will climb to a high near 92°F with calm afternoon winds from the northwest. But it’s only the beginning. By Tuesday, Boise could see dangerous highs reaching 102°F, prompting a summer weather alert across the Treasure Valley. Light winds and cloudless skies will offer little relief, and wind gusts could reach 20 mph, increasing wildfire risks east of I-84.
Expect mostly clear nights with warm lows in the mid-to-upper 60s, making little room for overnight cooling. Monday and Tuesday bring the peak heat, with temperatures hovering near 99°F and 102°F, respectively. If you plan to be outdoors, especially along the Boise River Greenbelt or in open areas near Eagle and Meridian, limit exertion and drink water often.
The extended forecast shows highs staying near 94°F on Thursday and 93°F on Independence Day. Though skies remain sunny, the persistent heat could impact outdoor 4th of July events. Plan for shade, sunscreen, and check on vulnerable neighbors.
🔎 Six-Day Outlook for Boise (June 29–July 4)
- Sunday: Sunny and hot. High near 92°F.
- Monday: Sunny. High near 99°F. Winds gusting to 20 mph.
- Tuesday: Hottest day. High near 102°F.
- Wednesday: Hot, high around 98°F. Partly cloudy at night.
- Thursday: Mostly sunny. High near 94°F.
- 4th of July (Friday): Sunny and hot. High near 93°F.
