2025 Compare Cities Climate:
Simi Valley, CA vs Altadena, CA

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Highlights
- Altadena has 30.8% more rainy days than Simi Valley.
- Altadena has 3.6% more Sunny Days than Simi Valley.
- On the BestPlaces comfort index, Altadena scores 5.8% better than Simi Valley
 Simi Valley, CAAltadena, CAUnited States
 Rainfall  Unlock2338
 Snowfall0  Unlock28
 Precipitation  Unlock37106
 Sunny277  Unlock205
 Avg. July High  Unlock8686
 Avg. Jan. Low42  Unlock22
 Comfort Index (higher=better)  Unlock9.17
 UV Index6  Unlock4.3
 Elevation  Unlock13582443
Reviews for Simi Valley    22 Reviews

I've live in two different neighborhoods since fall of 1996 and depending on the neighborhood you're quality of life experience will vary. The price of housing is such  More

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Over 15 years ago

I have lived in Simi Valley for 23 Years. I love it here but due to the cost of living am looking to relocate to another state/City where my money will go further. Simi  More

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Over 16 years ago

simi valley is a very nice place to live within the shadow of the LA metro area. it has low crime and reasonable housing costs with ready access to indoor and outdoor  More

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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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