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

September weather forecast and climate
Merced, CA

September, the first month of the autumn, in Merced, is still a hot month, with average temperature ranging between min 54.9°F (12.7°C) and max 90°F (32.2°C).


In September, the average high-temperature marginally drops, from a very hot 95.4°F (35.2°C) in August, to a hot 90°F (32.2°C). The average low-temperature, in Merced, California, is 54.9°F (12.7°C).


During September, Merced regularly aggregates up to 0.1" (3.8mm) of precipitation. Throughout the year, 12.3" (311.4mm) of rain is accumulated.


The average length of the day in September is 12.4h.

What is the temperature in September in Merced?

In Merced, in September, the average high-temperature is 90°F (32.2°C), and the average low-temperature is 54.9°F (12.7°C).

How much does it rain in Merced in September?

Throughout September, in Merced, California, 0.1" (3.8mm) of precipitation is accumulated.

What is the average length of the day in September in Merced?

In September, the average length of the day is 12.4h.
Average temperature in September - Merced, CA
  • Average high temperature in September: 90°F

The warmest month (with the highest average high temperature) is July (97.1°F).
The month with the lowest average high temperature is January (55°F).

  • Average low temperature in September: 54.8°F

The month with the highest average low temperature is July (60.9°F).
The coldest month (with the lowest average low temperature) is December (35.7°F).

Average rainfall in September - Merced, CA
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is January (2.5").
Driest months (with the lowest rainfall) are July and August (0").

Average daylight in September - Merced, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).