Mount Rainier National Park vs Portland: which is better, month by month

Portland beats Mount Rainier National Park in 10 of 12 months — its lead peaks in April (76 vs 55) — and they are within 3 points in July to August.

Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Mount Rainier National Park

🇺🇸 United States · cold climate

Best month: August 92/100
Months won: 0 of 12

Portland

🇺🇸 United States · mild climate

Best month: June 96/100
Months won: 10 of 12

Mount Rainier National Park vs Portland — all 12 months

Month	Mount Rainier National Park	Portland	Winner	Gap
January	32Ffreezing, soaked, clean air	49Fcold, soaked, clean air	Portland	17
February	35Ffreezing, soaked, clean air	55Dcold, rainy, clean air	Portland	20
March	46Ffreezing, soaked, clean air	65Ccool, rainy, clean air	Portland	19
April	55Dfreezing, rainy, clean air	76Bcool, rainy, clean air	Portland	21
May	71Bcold, rainy, clean air	86Anice, a little rain, clean air	Portland	15
June	78Bcold, rainy, clean air	96Swarm, a little rain, clean air	Portland	18
July	90Scool, dry, clean air	92Swarm, dry, clean air	Tie	2
August	92Scool, dry, clean air	89Awarm, dry, clean air	Tie	3
September	82Acold, a little rain, clean air	94Swarm, a little rain, clean air	Portland	12
October	61Ccold, soaked, clean air	72Bnice, rainy, clean air	Portland	11
November	39Ffreezing, soaked, clean air	57Dcool, soaked, clean air	Portland	18
December	27Ffreezing, soaked, clean air	45Fcold, soaked, clean air	Portland	18

A month is a tie when the two are within 3 points. The widest gap is April (55 vs 76). Tap a month for that month's temperature, rain, humidity and air quality side by side.