2025 Compare Cities Climate:
Altadena, CA vs Rialto, CA

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Highlights
- Rialto has 36.0% less rainy days than Altadena.
- Rialto has 1.7% less Sunny Days than Altadena.
- On the BestPlaces comfort index, Rialto scores 5.5% worse than Altadena
 Altadena, CARialto, CAUnited States
 Rainfall  Unlock1438
 Snowfall0  Unlock28
 Precipitation  Unlock40106
 Sunny287  Unlock205
 Avg. July High  Unlock9586
 Avg. Jan. Low47  Unlock22
 Comfort Index (higher=better)  Unlock8.67
 UV Index6.2  Unlock4.3
 Elevation  Unlock12572443
Reviews for Altadena    1 Reviews

I live just above the 1500 foot elevation at the edge of the San Gabriel Mountains in the L.A. suburb of Altadena--just above Pasadena. We're above the low morning fog  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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