| NWS Forecast for: Ontario OR Issued by: National Weather Service Boise, ID Last Update: 12:29 am MDT Oct 11, 2026 | |
| Today: Cloudy through mid morning, then becoming mostly sunny, with a high near 60. North northwest wind 9 to 14 mph. Tonight: Mostly cloudy, with a low around 36. West northwest wind 8 to 14 mph. Columbus Day: Mostly cloudy, with a high near 58. West wind 5 to 8 mph becoming calm in the afternoon. Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 34. Light and variable wind. Tuesday: Areas of frost before 9am. Otherwise, sunny, with a high near 67. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon. Tuesday Night: Clear, with a low around 35. Wednesday: Areas of frost between 7am and 9am. Otherwise, sunny, with a high near 70. Wednesday Night: Mostly clear, with a low around 37. Thursday: Areas of fog between 7am and 9am. Otherwise, sunny, with a high near 72. Thursday Night: Mostly clear, with a low around 38. Friday: Patchy fog. Otherwise, sunny, with a high near 72. Friday Night: Mostly clear, with a low around 39. Saturday: Sunny, with a high near 72. | |
| Ontario OR 44.03°N 116.97°W (Elev. 2103 ft) | |
Visit your local NWS office at: https://www.weather.gov/boi |