When to go · Ontario, Oregon
Ontario, Oregon in December
Avoid month. Listed as a month to avoid: Jul–Aug (hot, 35 °C (95 °F)+ days), Dec–Feb (ice on I-84).Avoid month. Listed as a month to avoid: Jul–Aug (hot, 95 °F (35 °C)+ days), Dec–Feb (ice on I-84).
Key facts
- Verdict
- Avoid
- Temperature
- 3°C (37°F)37°F (3°C) / −5°C (23°F)23°F (−5°C)
- average high / low
- Rain days
- 9
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Jul–Aug (hot, 35 °C (95 °F)+ days), Dec–Feb (ice on I-84).Listed as a month to avoid: Jul–Aug (hot, 95 °F (35 °C)+ days), Dec–Feb (ice on I-84).
Is another month better than December?
December is rated avoid. These months rate higher:
Weather in December
- Ontario, OregonHighs around 3 °C (37 °F), lows around -5 °C (23 °F), rain on about 9 daysHighs around 37 °F (3 °C), lows around 23 °F (-5 °C), rain on about 9 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Christmas Day big impact
25 Dec · United States
Most businesses closed; flights full from about 20 Dec to 2 Jan.
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Ontario, Oregon, side by side.
Verdict
Dec: Avoid
May: Great (better)
Daytime high
Dec: 3 °C (37 °F)37 °F (3 °C)
May: 24 °C (75 °F)75 °F (24 °C)
Night low
Dec: -5 °C (23 °F)23 °F (-5 °C)
May: 8 °C (46 °F)46 °F (8 °C)
Rain days
Dec: 9
May: 7 (better)
Crowds
Dec: High
May: Medium
Prices
Dec: High
May: Medium
Festivals listed
Dec: 1
May: 1
December: Listed as a month to avoid: Jul–Aug (hot, 35 °C+ days), Dec–Feb (ice on I-84).
May: Inside Ontario, Oregon's best window: May–Jun, Sep–Oct.
Ontario, Oregon: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm coat, hat and gloves for mornings and evenings