Climate twins of Evanston, WY

These are the US cities whose 12-month climate pattern most closely matches Evanston's. Each "twin" must be at least 140 miles away to avoid trivial near-neighbor matches. Similarity is computed across all 24 monthly metrics (12 average temperatures + 12 average precipitations), normalized so temperature and precipitation contribute equally.

Side-by-side: Evanston vs its climate twin

Top match: Drummond, MT

Month	Evanston			Drummond
	High	Low	Precip	High	Low	Precip
January	32.6°F	11.1°F	0.84 in	32.7°F	13.2°F	0.60 in
February	34.5°F	13.4°F	0.60 in	37.6°F	14.5°F	0.79 in
March	44.1°F	21.1°F	0.74 in	49.0°F	21.4°F	0.82 in
April	53.1°F	27.2°F	0.98 in	58.0°F	27.5°F	0.93 in
May	63.1°F	34.6°F	1.89 in	66.9°F	34.2°F	1.81 in
June	73.2°F	40.9°F	1.13 in	74.8°F	41.0°F	1.97 in
July	81.2°F	47.6°F	0.77 in	86.0°F	44.4°F	0.90 in
August	79.6°F	46.7°F	1.10 in	85.2°F	42.7°F	0.82 in
September	70.7°F	38.6°F	1.17 in	74.0°F	37.1°F	0.90 in
October	57.9°F	29.5°F	1.15 in	58.2°F	28.7°F	0.88 in
November	43.3°F	19.1°F	1.04 in	40.9°F	19.4°F	0.93 in
December	32.7°F	11.1°F	0.71 in	31.9°F	13.0°F	0.71 in

Cities that consider Evanston their climate twin

These US cities have Evanston in their top 3 most-similar list — meaning if you were to move from any of these places, Evanston would feel familiar.

Drummond, MT (ranks Evanston #1)
Elk Mountain, WY (ranks Evanston #3)
Hanna, WY (ranks Evanston #3)
Ennis, MT (ranks Evanston #3)

How this is computed

Each city is represented by a 24-dimensional vector: 12 monthly average temperatures and 12 monthly average precipitations. Each dimension is z-score normalized across the population of US cities, so that temperature variance and precipitation variance contribute proportionally. Distance between cities is Euclidean. We filter out cities within 2° latitude/longitude (~140 miles) so that "twins" mean climatically similar but geographically distinct — not just the neighboring town. Full methodology →