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When to go · Ontario, Oregon

Ontario, Oregon in June

Great month. Inside Ontario, Oregon's best window: May–Jun, Sep–Oct.

Key facts

Verdict
Great
Temperature
29°C (84°F) / 12°C (54°F)
average high / low
Rain days
5
Crowds
High
United States overall
Prices
High
United States overall

Verdict

GreatBest and avoid months for Ontario, Oregon

Inside Ontario, Oregon's best window: May–Jun, Sep–Oct.

Is another month better than June?

No other month rates higher than June for Ontario, Oregon in this guide.

Weather in June

Long-term averages
  • Ontario, OregonHighs around 29 °C (84 °F), lows around 12 °C (54 °F), rain on about 5 days

Crowds and prices

Crowds · United States overall
High
Prices · United States overall
High

United States overall: Rockies and northern parks open; desert heat builds; hurricane season starts. Book parks months ahead.

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

    Jun: Great

    May: Great

  • Daytime high

    Jun: 29 °C (84 °F)

    May: 24 °C (75 °F)

  • Night low

    Jun: 12 °C (54 °F)

    May: 8 °C (46 °F)

  • Rain days

    Jun: 5 (better)

    May: 7

  • Crowds

    Jun: High

    May: Medium

  • Prices

    Jun: High

    May: Medium

  • Festivals listed

    Jun: 0

    May: 1

June: Inside Ontario, Oregon's best window: May–Jun, Sep–Oct.

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 layer for the evenings

Build the full packing list for your trip →

Across United States in June →