When to go · Ontario, Oregon
Ontario, Oregon, month by month
The best months for Ontario, Oregon: May, Jun, Sep, Oct. Months to avoid: Jan, Feb, Jul, Aug, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug (hot, 35 °C+ days), Dec–Feb (ice on I-84).Listed as a month to avoid: Jul–Aug (hot, 95 °F+ days), Dec–Feb (ice on I-84).3 °C / -5 °C, 8 rain days37 °F / 23 °F, 8 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jul–Aug (hot, 35 °C+ days), Dec–Feb (ice on I-84).Listed as a month to avoid: Jul–Aug (hot, 95 °F+ days), Dec–Feb (ice on I-84).8 °C / -3 °C, 7 rain days46 °F / 27 °F, 7 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (May–Jun, Sep–Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.14 °C / 1 °C, 8 rain days57 °F / 34 °F, 8 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (May–Jun, Sep–Oct). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.19 °C / 4 °C, 7 rain days66 °F / 39 °F, 7 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Ontario, Oregon's best window: May–Jun, Sep–Oct.24 °C / 8 °C, 7 rain days75 °F / 46 °F, 7 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Ontario, Oregon's best window: May–Jun, Sep–Oct.29 °C / 12 °C, 5 rain days84 °F / 54 °F, 5 rain daysCrowds: High
- JulyAvoidListed as a month to avoid: Jul–Aug (hot, 35 °C+ days), Dec–Feb (ice on I-84).Listed as a month to avoid: Jul–Aug (hot, 95 °F+ days), Dec–Feb (ice on I-84).34 °C / 16 °C, 2 rain days93 °F / 61 °F, 2 rain daysCrowds: High · 1 festival or holiday
- AugustAvoidListed as a month to avoid: Jul–Aug (hot, 35 °C+ days), Dec–Feb (ice on I-84).Listed as a month to avoid: Jul–Aug (hot, 95 °F+ days), Dec–Feb (ice on I-84).33 °C / 15 °C, 2 rain days91 °F / 59 °F, 2 rain daysCrowds: High
- SeptemberGreatInside Ontario, Oregon's best window: May–Jun, Sep–Oct.27 °C / 10 °C, 3 rain days81 °F / 50 °F, 3 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Ontario, Oregon's best window: May–Jun, Sep–Oct.19 °C / 4 °C, 5 rain days66 °F / 39 °F, 5 rain daysCrowds: Medium
- NovemberMixedOutside the best window (May–Jun, Sep–Oct). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.9 °C / -1 °C, 8 rain days48 °F / 30 °F, 8 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Jul–Aug (hot, 35 °C+ days), Dec–Feb (ice on I-84).Listed as a month to avoid: Jul–Aug (hot, 95 °F+ days), Dec–Feb (ice on I-84).3 °C / -5 °C, 9 rain days37 °F / 23 °F, 9 rain daysCrowds: High · 1 festival or holiday