Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest
Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >
| NWS Forecast for: Ontario OR Issued by: National Weather Service Boise, ID Last Update: 12:29 am MDT Jul 26, 2026 | |
| Overnight: Mostly clear, with a low around 65. Northwest wind 9 to 13 mph, with gusts as high as 22 mph. Sunday: Sunny and hot, with a high near 98. West northwest wind 3 to 7 mph. Sunday Night: Clear, with a low around 66. Light and variable wind becoming north northwest 11 to 16 mph in the evening. Winds could gust as high as 28 mph. Monday: Sunny and hot, with a high near 96. West northwest wind 5 to 7 mph. Monday Night: Clear, with a low around 64. Light and variable wind becoming north northwest around 6 mph after midnight. Tuesday: Sunny and hot, with a high near 98. Tuesday Night: Clear, with a low around 66. Wednesday: Sunny and hot, with a high near 98. Wednesday Night: Clear, with a low around 66. Thursday: Sunny and hot, with a high near 101. Thursday Night: Mostly clear, with a low around 67. Friday: Sunny and hot, with a high near 102. Friday Night: Clear, with a low around 68. Saturday: Sunny and hot, with a high near 101. | |
| Ontario OR 44.03°N 116.97°W (Elev. 2103 ft) | |
Visit your local NWS office at: https://www.weather.gov/boi |