Climate in Altadena, California

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Climate	Altadena, CA	United States
Rainfall (in.)	21.2	36.5
Snowfall (in.)	0	25
Precipitation Days	36	100
Sunny Days	287	205
Avg. July High	89	86.5
Avg. Jan. Low	43	20.5
Comfort Index (higher=better)	45	44
UV Index	6.2	4.3
Elevation ft.	1,332	1,443

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Altadena, CA, gets 21 inches of rain per year. The US average is 37. Snowfall is 0 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 36.

On average, there are 287 sunny days per year in Altadena, CA. The July high is around 89 degrees. The January low is 43. Our comfort index, which is based on humidity during the hot months, is a 45 out of 100, where higher is more comfortable. The US average on the comfort index is 44.

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Altadena Climate SperlingViews

Altadena: High and Dry in L.A.: 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... (read more)Have an opinion about Altadena? Leave a commentTo See All SperlingViews for Altadena Click Here