| NWS Forecast for: Ontario OR Issued by: National Weather Service Boise, ID Last Update: 12:29 am MDT Oct 26, 2026 | |
| Overnight: Mostly cloudy, with a low around 38. Light north wind. Monday: A 40 percent chance of showers between 2pm and 5pm. Patchy frost before 10am. Otherwise, partly sunny, with a high near 62. Light and variable wind becoming west southwest 6 to 11 mph in the morning. Monday Night: Partly cloudy, with a low around 33. West southwest wind 5 to 8 mph becoming calm after midnight. Tuesday: Patchy frost between 7am and 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 59. Calm wind becoming south southeast around 5 mph in the afternoon. Tuesday Night: Mostly clear, with a low around 31. Calm wind. Wednesday: Mostly sunny, with a high near 61. Wednesday Night: Partly cloudy, with a low around 30. Thursday: Mostly sunny, with a high near 60. Thursday Night: Mostly cloudy, with a low around 36. Friday: Partly sunny, with a high near 58. Friday Night: Partly cloudy, with a low around 37. Saturday: Mostly sunny, with a high near 57. Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 36. Sunday: A 30 percent chance of showers. Mostly sunny, with a high near 56. | |
| Ontario OR 44.03°N 116.97°W (Elev. 2103 ft) | |
Visit your local NWS office at: https://www.weather.gov/boi |