Boise, Idaho – Blistering July heat takes hold across Idaho this weekend, putting Boise on track to hit a scorching 100°F by Saturday afternoon. Anyone traveling along I-84 or planning outdoor activities should take extra precautions as the heat index climbs.
According to the National Weather Service in Boise, Saturday marks the start of an extended stretch of dangerous summer weather. Temperatures will spike near 97°F Saturday, reach 100°F Sunday, and remain in the upper 90s through Monday. Hydration is critical, especially for seniors, children, and pets. Residents are urged to avoid strenuous activities from noon to 6 p.m. and to check in on vulnerable neighbors.
Local impacts extend beyond the city. Ada County road crews are monitoring pavement conditions, as excessive heat can soften asphalt on major routes like I-84 and Broadway Avenue. Outdoor workers and those without air conditioning face increased health risks. Cooling centers are open at Boise Main Library and local community centers throughout the weekend.
This heat wave is the first to push Boise into triple digits this summer, following a stretch of milder early July weather. The city typically sees its first 100°F day in mid-July, but this round comes with a prolonged threat. Daytime highs won’t drop below 93°F through at least Tuesday, keeping overnight relief limited.
Stay tuned for additional advisories if the National Weather Service extends its heat alert. The threat for heat-related illness will remain high into next week.
Boise Five Day Forecast: July 12th–July 16th
- Saturday: Sunny and hot, high near 97°F.
- Sunday: Sunny, high near 100°F.
- Monday: Hot, high near 99°F.
- Tuesday: Sunny, high near 93°F.
- Wednesday: Hot, high near 94°F.
