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

In September, Crater Lake National Park averages 17°C high / 5°C low with about 63 mm of rain; Portland averages 24°C high / 14°C low with about 46 mm.

Crater Lake National Park vs Portland in September

Portland is the better pick in September — 94 vs 88 on SeasonMap's comfort score. Portland is warm, a little rain, clean air, while Crater Lake National Park is cool, a little rain, clean air.

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

	🇺🇸 Crater Lake National Park	🇺🇸 Portland
Comfort score	88/100 (A)	94/100 (S)
Feels-like high	15°C	24°C
Avg high / low	17° / 5°	24° / 14°
Rainfall	63 mm	46 mm
Rainy days	6	5
Humidity	58%	67%
Air quality (AQI)	37	33

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

Month by month

Crater Lake National Park vs Portland in September — FAQ

Is September better in Crater Lake National Park or Portland?: Portland is the better pick in September — 94 vs 88 on SeasonMap's comfort score. Portland is warm, a little rain, clean air, while Crater Lake National Park is cool, a little rain, clean air.
What is the weather like in Crater Lake National Park vs Portland in September?: In September, Crater Lake National Park averages 17°C high / 5°C low with about 63 mm of rain; Portland averages 24°C high / 14°C low with about 46 mm.