Climate twins of Sunnyside, WA

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

Top match: Central Valley, UT

Month	Sunnyside			Central Valley
	High	Low	Precip	High	Low	Precip
January	37.6°F	23.0°F	0.98 in	41.0°F	17.0°F	0.55 in
February	45.4°F	24.3°F	0.65 in	47.3°F	21.7°F	0.45 in
March	55.4°F	29.7°F	0.54 in	57.5°F	27.2°F	0.69 in
April	63.3°F	35.6°F	0.61 in	64.0°F	31.7°F	0.59 in
May	72.8°F	43.7°F	0.75 in	73.2°F	39.3°F	0.97 in
June	79.2°F	49.1°F	0.59 in	84.6°F	46.6°F	0.43 in
July	88.2°F	54.4°F	0.14 in	90.4°F	53.7°F	0.65 in
August	86.5°F	52.2°F	0.26 in	88.4°F	52.2°F	0.71 in
September	77.7°F	44.5°F	0.36 in	80.7°F	42.9°F	0.79 in
October	63.6°F	35.2°F	0.74 in	67.7°F	32.0°F	0.88 in
November	48.3°F	27.4°F	0.85 in	53.2°F	23.4°F	0.48 in
December	37.1°F	22.4°F	1.18 in	41.0°F	16.2°F	0.61 in

Cities that consider Sunnyside their climate twin

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

Marysvale, UT (ranks Sunnyside #1)

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 →