Boise, Idaho – Summer’s heat is turning up in southwest Idaho, with Boise heading into a stretch of 90°+ days and a blistering 101° high expected Monday. The warmup will steadily build into the weekend, bringing increased risk for heat exhaustion, especially along roadways like I-84 where pavement temperatures soar.
According to the National Weather Service in Boise, sunny skies will dominate through Tuesday, with daytime highs climbing from 89°F Friday to 95°F on Sunday and peaking near 101°F by Monday. Winds remain light, but calm conditions could worsen air quality and intensify the heat index.
Friday (June 27): Expect sunshine and a high near 89°F. Light northwest winds up to 8 mph may offer minimal relief during peak sun hours (2–6 p.m.).
Saturday–Sunday: Conditions remain clear and hot. Saturday will top out near 95°F, and Sunday continues the streak with a high around 95°F and an overnight low of 62°F.
Monday (July 1): The hottest day so far this summer. Boise could see 101°F under clear skies, with minimal nighttime relief (low around 67°F).
Tuesday: Temperatures stay dangerously high near 100°F with partly cloudy skies.
🔥 Warnings remain in effect into early next week as triple-digit heat continues. Next update expected Friday evening.
🌤 Five-Day Forecast for Boise (June 27 – July 1):
- Friday: Sunny, high 89°F / low 59°F
- Saturday: Sunny, high 95°F / low 58°F
- Sunday: Hot and sunny, high 95°F / low 62°F
- Monday: Very hot, high 101°F / low 67°F
- Tuesday: Mostly sunny and hot, high 100°F / low 65°F
