Boise, Idaho – Temperatures in Boise could soar to 100°F by Saturday afternoon, prompting safety concerns across southwest Idaho as a stretch of intense heat builds through the weekend.
According to the National Weather Service in Boise, high temperatures will steadily rise each day, climbing from 91°F Wednesday to 94°F Thursday, before peaking near 100°F on Saturday. Winds will remain light, with gusts under 20 mph, adding to the potential for heat-related illness in poorly ventilated areas.
Cities across Ada and Canyon counties—including Boise, Meridian, and Nampa—will experience consecutive days in the 90s, with minimal overnight relief. Lows are expected to remain around 60°F, which may limit cooling opportunities for homes without air conditioning.
Outdoor workers and vulnerable populations are urged to stay hydrated, avoid peak afternoon hours, and check on elderly neighbors. Local authorities also caution against activities that could spark wildfires, especially in dry grasslands west of Boise.
This early-season heatwave will ease slightly by Sunday night, with cooler highs in the 80s and a slight chance of showers returning Monday. Updates will be issued as the weekend approaches and any advisories or alerts are posted.
