2025 Compare Cities Climate:
Sumner, WA vs Rialto, CA

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Highlights
- Rialto has 70.6% less rainy days than Sumner.
- Rialto has 100.0% more Sunny Days than Sumner.
- On the BestPlaces comfort index, Rialto scores 21.1% better than Sumner
 Sumner, WARialto, CAUnited States
 Rainfall  Unlock1438
 Snowfall5  Unlock28
 Precipitation  Unlock40106
 Sunny141  Unlock205
 Avg. July High  Unlock9586
 Avg. Jan. Low35  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index2.6  Unlock4.3
 Elevation  Unlock12572443
Reviews for Sumner    2 Reviews

Sumner is a wonderfully small but growing community nestled in the a beautiful and fertile valley of Western Washington. Only minutes from the major cities, the small  More

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Over 19 years ago

Sumner Washington is located in the Puyallup valley which by definition is flat and walkable. The city adminstration and council are very focused on maintaining a small  More

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Reviews for Rialto    7 Reviews

I have lived in Rialto my entire life, I am now 26, and I have seen substantial growth in the last 10 years. Mayor Deborah Robertson has done an excellent job making  More

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Rialto has come a long way lots of places to shop and eat catch a movie friendly people  More

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Over 17 years ago

I live in Rialto, about 1 hour outside of Los Angeles, and even though it is cheaper than Los Angeles, the average college graduate cannot afford to stay here. First,  More

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