Boise vs Denver: which is better, month by month

Denver beats Boise in 6 of 12 months — its lead peaks in December (67 vs 47) — while Boise wins May and September; they are within 3 points in the other 4 months.

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.

Boise

🇺🇸 United States · arid climate

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

Denver

🇺🇸 United States · arid climate

Best month: September 90/100
Months won: 6 of 12

Boise vs Denver — all 12 months

Month	Boise	Denver	Winner	Gap
January	51Dcold, a little rain, clean air	63Ccold, dry, clean air	Denver	12
February	61Ccold, a little rain, clean air	66Ccold, dry, clean air	Denver	5
March	73Bcold, a little rain, clean air	75Bcool, a little rain, clean air	Tie	2
April	84Acool, dry, clean air	82Acool, a little rain, clean air	Tie	2
May	92Snice, a little rain, clean air	88Anice, a little rain	Boise	4
June	90Swarm, dry, clean air	87Ahot, a little rain, clean air	Tie	3
July	72Bsweltering, dry, clean air	81Ahot, a little rain	Denver	9
August	81Ahot, dry	84Ahot, dry, clean air	Tie	3
September	94Swarm, dry, clean air	90Swarm, dry, clean air	Boise	4
October	82Acool, dry, clean air	86Anice, dry, clean air	Denver	4
November	66Ccold, dry, clean air	73Bcool, dry, clean air	Denver	7
December	47Fcold, a little rain, clean air	67Ccold, dry, clean air	Denver	20

A month is a tie when the two are within 3 points. The widest gap is December (47 vs 67). Tap a month for that month's temperature, rain, humidity and air quality side by side.