| NWS Forecast for: Ontario OR Issued by: National Weather Service Boise, ID Last Update: 12:29 am MDT Apr 10, 2026 | |
| Overnight: Mostly cloudy, with a low around 45. Light north northwest wind. Friday: A 20 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 70. Calm wind becoming west southwest around 5 mph in the afternoon. Friday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 49. South southeast wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Saturday: Showers likely. Mostly cloudy, with a high near 66. South wind 3 to 7 mph. Chance of precipitation is 60%. Saturday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 46. South southeast wind 5 to 8 mph becoming calm after midnight. Sunday: Showers, with thunderstorms also possible after noon. High near 61. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Sunday Night: Showers. Low around 42. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible. Monday: A 50 percent chance of showers. Mostly cloudy, with a high near 57. Monday Night: Mostly cloudy, with a low around 38. Tuesday: Mostly sunny, with a high near 61. Tuesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 41. Wednesday: A 30 percent chance of showers. Mostly cloudy, with a high near 59. Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 36. Thursday: 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 |