Calgary vs Denver: which is better, month by month

Denver beats Calgary in 9 of 12 months — its lead peaks in December (67 vs 38) — while Calgary wins July to August; they are within 3 points in June.

Each place is scored under the lens that suits its type. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Calgary

🇨🇦 Canada · arid climate

Best month: August 94/100
Months won: 2 of 12

Denver

🇺🇸 United States · arid climate

Best month: September 90/100
Months won: 9 of 12

Calgary vs Denver — all 12 months

Month	Calgary	Denver	Winner	Gap
January	43Ffreezing, dry, clean air	63Ccold, dry, clean air	Denver	20
February	41Ffreezing, dry, clean air	66Ccold, dry, clean air	Denver	25
March	55Dcold, dry, clean air	75Bcool, a little rain, clean air	Denver	20
April	72Bcold, dry, clean air	82Acool, a little rain, clean air	Denver	10
May	80Acool, a little rain	88Anice, a little rain	Denver	8
June	84Anice, rainy, clean air	87Ahot, a little rain, clean air	Tie	3
July	91Swarm, a little rain	81Ahot, a little rain	Calgary	10
August	94Swarm, a little rain	84Ahot, dry, clean air	Calgary	10
September	86Anice, dry, clean air	90Swarm, dry, clean air	Denver	4
October	68Ccold, dry, clean air	86Anice, dry, clean air	Denver	18
November	51Dcold, dry, clean air	73Bcool, dry, clean air	Denver	22
December	38Ffreezing, dry, clean air	67Ccold, dry, clean air	Denver	29

A month is a tie when the two are within 3 points. The widest gap is December (38 vs 67). Tap a month for that month's temperature, rain, humidity and air quality side by side.