Lowell to Impact Hawaii; Heat Persists in the South-Central U.S.
Hurricane Lowell is forecast to pass west of Kauai`s coastal waters tonight. Impacts such as high surf and heavy rain could impact all of the islands. Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley into this week with limited nighttime relief. Periods of moderate to heavy rainfall will be possible through Tuesday morning in the northern Rockies. Read More >
| NWS Forecast for: Ontario OR Issued by: National Weather Service Boise, ID Last Update: 12:29 pm MDT Sep 6, 2026 | |
| Overnight: A 40 percent chance of showers, mainly before 4am. Areas of fog. Otherwise, mostly cloudy, with a low around 49. Light and variable wind. Labor Day: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 71. West southwest wind 5 to 8 mph becoming calm in the afternoon. Monday Night: Mostly clear, with a low around 46. Calm wind. Tuesday: Patchy fog before 8am. Otherwise, sunny, with a high near 75. Calm wind. Tuesday Night: Mostly clear, with a low around 48. Calm wind. Wednesday: Sunny, with a high near 79. Wednesday Night: Mostly clear, with a low around 52. Thursday: Sunny, with a high near 82. Thursday Night: Mostly clear, with a low around 55. Friday: Sunny, with a high near 80. Friday Night: Partly cloudy, with a low around 52. Saturday: Mostly sunny, with a high near 73. Saturday Night: Partly cloudy, with a low around 50. Sunday: Mostly sunny, with a high near 73. | |
| Ontario OR 44.03°N 116.97°W (Elev. 2103 ft) | |
Visit your local NWS office at: https://www.weather.gov/boi |