When to go · Rainier

Rainier in August

Great month. Inside Rainier's best window: Jun–Sep (warm, low rain).

Key facts

Verdict: Great
Temperature: 22°C (72°F)72°F (22°C) / 14°C (57°F)57°F (14°C); average high / low
Rain days: 5
Crowds: High; United States overall
Prices: High; United States overall

Plan around it

Verdict

GreatBest and avoid months for Rainier

Inside Rainier's best window: Jun–Sep (warm, low rain).

No other month rates higher than August for Rainier in this guide.

Long-term averages

RainierHighs around 22 °C (72 °F), lows around 14 °C (57 °F), rain on about 5 daysHighs around 72 °F (22 °C), lows around 57 °F (14 °C), rain on about 5 days
Pacific Northwest, United States · Seattle, Portland, Olympic, Mount Rainierbest weather
Grey and damp October–May; July–September is dry and clear, with wildfire smoke in some years.

United States overall: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.

Weather, crowds and prices for any two months in Rainier, side by side.

First month

Second month

August: Inside Rainier's best window: Jun–Sep (warm, low rain).

June: Inside Rainier's best window: Jun–Sep (warm, low rain).

Rainier: figures are long-term averages from this guide, not a forecast.

Nothing unusual for the weather this month.