North Cascades National Park Weather in September
September in North Cascades National Park averages 17°C (63°F) during the day and 7°C (45°F) at night. Quite a bit of rainfall is typical this month, with around 134 mm (5.3 in) on average. An umbrella is a good idea.
Rainfall in North Cascades National Park in September
You can expect rain on roughly 14 days based on historical data, averaging 134 mm (5.3 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in North Cascades National Park in September
September in North Cascades National Park brings moderate temperatures, with highs of 17°C (63°F) and nights around 7°C (45°F). Summer occurs in September. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 7°C (45°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for North Cascades National Park.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our North Cascades National Park's climate page.
North Cascades National Park Temperature in September
Min Temperature
7°C (45°F)
Max Temperature
17°C (63°F)
Chance of Rain
45%
Precipitation
134 mm (5.3 in)
Rainy days
14 days
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
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What to Wear in North Cascades National Park in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags.What To Do in North Cascades National Park in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our North Cascades National Park's climate page.
See the full North Cascades National Park climate overview or explore weather in the United States of America.
