Alta Sierra
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Alta Sierra, CA

The first month of the autumn, September, is also a moderately hot month in Alta Sierra, California, with average temperature varying between 52°F (11.1°C) and 82.9°F (28.3°C).

Temperature

In Alta Sierra, the average high-temperature slightly decreases, from a hot 89.1°F (31.7°C) in August, to a warm 82.9°F (28.3°C). The average low-temperature, in September, is 52°F (11.1°C).

Rainfall

Throughout September, 0.9" (22.9mm) of precipitation is accumulated. During the entire year, Alta Sierra aggregates up to 54.8" (1392.1mm) of precipitation.

Snowfall

In Alta Sierra, during the entire year, snow aggregates up to 8.1" (205.7mm).

Daylight

In September, the average length of the day in Alta Sierra is 12.4h.

What is the temperature in September in Alta Sierra?

In September, in Alta Sierra, the average high-temperature is 82.9°F (28.3°C), and the average low-temperature is 52°F (11.1°C).

How much does it rain in Alta Sierra in September?

Throughout September, in Alta Sierra, 0.9" (22.9mm) of precipitation is accumulated.

What is the average length of the day in September in Alta Sierra?

In Alta Sierra, California, the average length of the day in September is 12.4h.
Average temperature in September - Alta Sierra, CA
  • Average high temperature in September: 83°F

Warmest months (with the highest average high temperature) are July and August (89°F).
The month with the lowest average high temperature is December (52°F).

  • Average low temperature in September: 52°F

The month with the highest average low temperature is July (58°F).
Coldest months (with the lowest average low temperature) are January and December (34°F).

Average rainfall in September - Alta Sierra, CA
  • Average rainfall in September: 0.9"

The wettest month (with the highest rainfall) is December (10.3").
The driest month (with the lowest rainfall) is July (0").

Average snowfall in September - Alta Sierra, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (2.7").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average daylight in September - Alta Sierra, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).