Altadena
California, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Altadena, CA

January, like December, in Altadena, California, is another comfortable winter month, with average temperature fluctuating between 67.8°F (19.9°C) and 44.2°F (6.8°C).

Temperature

With an average high-temperature of 67.8°F (19.9°C) and an average low-temperature of 44.2°F (6.8°C), January is the coldest month.

Rainfall

In January, in Altadena, the rain falls for 7.2 days. Throughout the year, in Altadena, California, there are 43.8 rainfall days.

Daylight

In January, the average length of the day is 10.2h.

What is the coldest month in Altadena?

The coldest month in Altadena, California, is January, with an average high-temperature of 67.8°F (19.9°C) and an average low-temperature of 44.2°F (6.8°C).

What is the temperature in January in Altadena?

The average high-temperature, in January, in Altadena, is 67.8°F (19.9°C), while the average low-temperature is 44.2°F (6.8°C).

How many days does it rain in January in Altadena?

In January, in Altadena, California, the rain falls for 7.2 days.

What is the average length of the day in January in Altadena?

In Altadena, California, the average length of the day in January is 10.2h.
Average temperature in January - Altadena, CA
  • Average high temperature in January: 67.8°F

The warmest month (with the highest average high temperature) is August (90.6°F).
The month with the lowest average high temperature is January (67.8°F).

  • Average low temperature in January: 44.3°F

The month with the highest average low temperature is August (62°F).
The coldest month (with the lowest average low temperature) is December (44.1°F).

Average rainfall days in January - Altadena, CA
  • Average rainfall days in January: 7.2 days

The month with the highest number of rainy days is March (7.7 days).
The month with the lowest number of rainy days is July (0.5 days).

Average daylight in January - Altadena, CA
  • Average daylight in January: 10.2h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).