Boise, Idaho – Summer heat will make a strong return to the Treasure Valley this week, with temperatures climbing into the 90s and signaling a prolonged period of hot and dry conditions. The warmup begins Monday and is expected to peak midweek, creating potential health risks and challenging travel conditions for drivers along major corridors like Interstate 84.
According to the National Weather Service office in Boise, Monday will be hot, with a high temperature reaching 90 degrees under mostly sunny skies. Winds are expected to remain calm before shifting to the northwest at 5 to 7 mph in the afternoon. Residents should prepare for increased sun exposure and take necessary precautions, such as staying hydrated and limiting strenuous outdoor activities during the peak heat of the day. This pattern marks a significant shift to a more summer-like regime for the region.
The heat is not a one-day event. Tuesday will bring sunny skies and a high of 87 degrees, offering only brief and minor relief before temperatures surge again. By Wednesday, the mercury is set to climb to 93 degrees under clear and sunny skies, establishing a multi-day stretch of significant heat. These conditions will persist through the Juneteenth holiday on Thursday, which also shows a high of 93 degrees. The persistent dry heat may elevate fire weather concerns across the region, and officials urge caution with any outdoor activities that could create sparks.
Those planning outdoor activities or travel should stay aware of the changing conditions. This week’s forecast calls for consistent sunshine and high temperatures, demanding preparedness.
Here is a look at the five-day forecast:
- Sunday: Mostly sunny with a high near 89°F.
- Monday: Hot and mostly sunny, with a high near 90°F.
- Tuesday: Sunny with a high near 87°F.
- Wednesday: Clear and sunny, with a high near 93°F.
- Juneteenth (Thursday): Hot and sunny, with a high near 93°F.
