Mount Rainier National Park Weather in August

During August, Mount Rainier National Park experiences low daytime temperatures of 11°C (52°F) and cooler nights around -1°C (30°F). As part of the summer season, some snow/rainfall is to be expected.

Rainfall in Mount Rainier National Park in August

Records from the past 30 years suggest around 7 days of snow/rain, with 42 mm (1.7 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Mount Rainier National Park in August

August in Mount Rainier National Park brings low temperatures, with highs of 11°C (52°F) and nights around -1°C (30°F). The month of August belongs to the summer season. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. At -1°C (30°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. On average, it sees the highest temps of the year.

Sunshine in Mount Rainier National Park in August

The days are predominantly sunny, with an estimated total of around 277 hours of sunshine. Despite the cool temperatures, these sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Mount Rainier National Park.