North Cascades National Park vs Portland: which is better, month by month

Portland beats North Cascades National Park in 10 of 12 months — its lead peaks in November (57 vs 34) — while North Cascades National Park wins August; they are within 3 points in July.

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.

North Cascades National Park

🇺🇸 United States · cold climate

Best month: August 93/100
Months won: 1 of 12

Portland

🇺🇸 United States · mild climate

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

North Cascades National Park vs Portland — all 12 months

Month	North Cascades National Park	Portland	Winner	Gap
January	30Ffreezing, soaked, clean air	49Fcold, soaked, clean air	Portland	19
February	38Ffreezing, soaked, clean air	55Dcold, rainy, clean air	Portland	17
March	47Ffreezing, soaked, clean air	65Ccool, rainy, clean air	Portland	18
April	60Cfreezing, rainy, clean air	76Bcool, rainy, clean air	Portland	16
May	74Bcold, rainy, clean air	86Anice, a little rain, clean air	Portland	12
June	79Bcold, rainy, clean air	96Swarm, a little rain, clean air	Portland	17
July	90Scool, dry, clean air	92Swarm, dry, clean air	Tie	2
August	93Scool, a little rain, clean air	89Awarm, dry, clean air	North Cascades National Park	4
September	81Acold, a little rain, clean air	94Swarm, a little rain, clean air	Portland	13
October	57Dcold, soaked, clean air	72Bnice, rainy, clean air	Portland	15
November	34Ffreezing, soaked, clean air	57Dcool, soaked, clean air	Portland	23
December	26Ffreezing, soaked, clean air	45Fcold, soaked, clean air	Portland	19

A month is a tie when the two are within 3 points. The widest gap is November (34 vs 57). Tap a month for that month's temperature, rain, humidity and air quality side by side.