Climate of Altadena

Altadena has a mediterranean climate. The summers are hot and dry, and the temperature is mild in the winter. The average annual temperature for Altadena is 44° degrees and there is about 71 inch of rain in a year. It is dry for 296 days a year with an average humidity of 53% and an UV-index of 5.

Climate averages for the whole year

Day: the average daily temperature during the day is between 16°C and 30°C
Night:the average nighttime temperature is between 7°C and 17°C
Rain: it rains 47 days and there is a total of approximately 180 mm rainfall
Sun hours: throughout the year there are 3571 sun hours

Maximum temperature:	between 16°C and 30°C
Warmest month:	30°C in July
Coldest month:	16°C in December
Night temperature:	between 7°C and 17°C
Dry days:	318 days
Days with rain:	47 days
Days with snow:	0 days
Total rain sum:	180 mm
Hours of sunshine:	3571 hours

Climate of Altadena
Temperature graph
Precipitation graph
Climate chart of Altadena
The best travel time for Altadena
Climate of Altadena by month
Experiences with the weather of Altadena

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Altadena.

Precipitation graph

This graph shows the average amount of rainfall per month for Altadena.

Climate table of Altadena

In this climate table you can see at a glance what the average weather per month is for Altadena. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Altadena might be like in a given month.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Day temp. (°F)	63	63	67	70	74	80	85	86	85	77	69	61
Night temp. (°F)	46	45	48	50	53	57	62	63	63	57	51	45
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Precipitation (inch)	16	19	6	3	1	0	4	2	2	2	6	11
Days with rain	6	6	6	5	3	1	4	2	3	3	3	5
Dry days	25	22	25	25	28	29	27	29	27	28	27	26
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sun hours per day	7	7	9	12	12	12	12	12	11	8	7	7
Wind force (Bft)	2	2	2	2	2	2	2	2	2	2	2	2
UV-index	4	4	4	5	5	6	6	6	6	5	4	3

Best time to visit Altadena

The best time to visit Altadena in the state of California is from March through November. In this period you have a warm temperature and almost no precipitation. The highest average temperature in Altadena is 86°F in August and the lowest is 61°F in December.

Climate of Altadena by month

What is the average climate in a given month for Altadena? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

January