Boise, ID – Sunday will mark the start of an intense heat stretch in Boise, with afternoon highs reaching 93°F before temperatures soar into triple digits by Tuesday. Light northwest winds will offer little relief, and overnight lows will stay in the 60s, keeping conditions warm even after sunset.
According to the National Weather Service, Monday’s high will push to 97°F under clear skies, followed by a blistering 100°F on Tuesday. The Treasure Valley, including Meridian and Nampa, will see the hottest temperatures midafternoon, increasing the risk of heat-related illness for outdoor workers and vulnerable residents. Local officials recommend limiting strenuous activity to early morning or evening hours and staying hydrated.
This hot stretch is expected to hold through midweek before a slight cool-down into the upper 80s late in the week. While skies remain clear, UV levels will be high, making sunscreen and shade essential for outdoor plans.
Warnings remain possible if heat indices climb further, so residents should monitor updates.
Five Day Forecast for Boise, ID
- Sunday: Sunny and hot. High 93°F, low 63°F
- Monday: Sunny and hot. High 97°F, low 66°F
- Tuesday: Hot with mostly clear skies. High 100°F, low 66°F
- Wednesday: Sunny and hot. High 97°F, low 64°F
- Thursday: Mostly clear and warm. High 89°F, low 59°F
