What is the weather like in Crater Lake National Park vs Olympic National Park in September?

In September, Crater Lake National Park averages 17°C high / 5°C low with about 63 mm of rain; Olympic National Park averages 14°C high / 6°C low with about 148 mm.

Crater Lake National Park vs Olympic National Park in September

Crater Lake National Park is the better pick in September — 88 vs 78 on SeasonMap's comfort score. Crater Lake National Park is cool, a little rain, clean air, while Olympic National Park is cool, rainy, clean air.

Crater Lake National Park vs Olympic National Park — September climate, side by side

	🇺🇸 Crater Lake National Park	🇺🇸 Olympic National Park
Comfort score	88/100 (A)	78/100 (B)
Feels-like high	15°C	12°C
Avg high / low	17° / 5°	14° / 6°
Rainfall	63 mm	148 mm
Rainy days	6	11
Humidity	58%	75%
Air quality (AQI)	37	31

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Crater Lake National Park 🇺🇸 United Statescool, a little rain, clean air · best July88
Olympic National Park 🇺🇸 United Statescool, rainy, clean air · best August78

Crater Lake National Park vs Olympic National Park in September — FAQ

Is September better in Crater Lake National Park or Olympic National Park?: Crater Lake National Park is the better pick in September — 88 vs 78 on SeasonMap's comfort score. Crater Lake National Park is cool, a little rain, clean air, while Olympic National Park is cool, rainy, clean air.
What is the weather like in Crater Lake National Park vs Olympic National Park in September?: In September, Crater Lake National Park averages 17°C high / 5°C low with about 63 mm of rain; Olympic National Park averages 14°C high / 6°C low with about 148 mm.