Boise, Idaho – Drivers in the Treasure Valley can expect clear skies and warm afternoons this week, but chilly overnight lows may catch some off guard. Temperatures near 87 degrees Wednesday afternoon will drop quickly into the 50s by nightfall, making for wide swings that impact evening travel and early morning commutes. Light winds will keep conditions calm, though drivers along I-84 near Boise should plan for lower visibility during early morning hours due to valley haze.
According to the National Weather Service in Boise, Wednesday brings sunny skies and a high near 84 before climbing toward 87 on Thursday and Friday. Winds remain light, rarely exceeding 5 mph, offering calm conditions for road travel. Cooler nights in the mid-50s will require layered clothing for those headed out early or staying out late.
The stretch of warm afternoons continues into the weekend, though highs ease slightly by Saturday with a near 81-degree peak. Overnight lows remain seasonably cool, bottoming out in the low 50s, ideal for those camping or working outdoors.
Officials urge residents to stay hydrated during hot afternoons and prepare for sharp temperature drops after sunset. Travelers should keep water and light jackets in their vehicles, especially for morning commutes on I-84 where chilly starts may linger.
Clear skies hold through Sunday, with no rain in the forecast. Conditions remain stable into early next week, though updates may follow if shifts in wind patterns or wildfire smoke affect air quality.
Five Day Forecast for Boise, Idaho
- Wednesday: Sunny, high 84, low 56
- Thursday: Sunny, high 87, low 58
- Friday: Mostly sunny, high 87, low 58
- Saturday: Mostly sunny, high 81, low 54
- Sunday: Sunny, high 80, low 54
