Climate twins of Glendale, CA

These are the US cities whose 12-month climate pattern most closely matches Glendale'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: Glendale vs its climate twin

Top match: Walnut Creek, CA

Month	Glendale			Walnut Creek
	High	Low	Precip	High	Low	Precip
January	69.0°F	42.6°F	3.65 in	58.4°F	41.7°F	3.46 in
February	68.5°F	44.0°F	4.47 in	63.2°F	44.1°F	3.57 in
March	71.0°F	46.9°F	2.79 in	67.7°F	46.8°F	2.57 in
April	73.5°F	50.2°F	0.87 in	72.2°F	49.2°F	1.23 in
May	75.4°F	54.7°F	0.40 in	78.0°F	53.1°F	0.61 in
June	80.1°F	58.7°F	0.10 in	84.6°F	56.7°F	0.12 in
July	85.8°F	62.6°F	0.04 in	88.3°F	58.3°F	0.00 in
August	88.3°F	62.9°F	0.01 in	88.2°F	58.8°F	0.02 in
September	86.8°F	60.6°F	0.13 in	86.1°F	57.6°F	0.06 in
October	80.9°F	54.2°F	0.69 in	78.2°F	53.1°F	0.68 in
November	74.6°F	46.3°F	0.85 in	66.7°F	45.9°F	1.87 in
December	68.0°F	41.7°F	2.50 in	58.7°F	41.2°F	3.55 in

Cities that consider Glendale their climate twin

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

Lafayette, CA (ranks Glendale #2)
Pleasant Hill, CA (ranks Glendale #2)
Walnut Creek, CA (ranks Glendale #2)
Elk Grove, CA (ranks Glendale #2)

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 →