September weather forecast and climate
Mount Hamilton, CA

Weather in September

September, the first month of the autumn, in Mount Hamilton, is still a warm month, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 58.5°F (14.7°C).

Temperature

In September, the average high-temperature is almost the same as in August - a still moderately hot 74.1°F (23.4°C). The average low-temperature, in Mount Hamilton, California, is 58.5°F (14.7°C).

Rainfall

Throughout September, in Mount Hamilton, 0.27" (6.9mm) of precipitation is accumulated. Throughout the year, 23.63" (600.2mm) of rain is accumulated.

Snowfall

In Mount Hamilton snow does not fall in May through October.

Daylight

In Mount Hamilton, the average length of the day in September is 12.4h.
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FAQ

What is the temperature in September in Mount Hamilton?

In September, in Mount Hamilton, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 58.5°F (14.7°C).

How much does it rain in Mount Hamilton in September?

In Mount Hamilton, California, in September, 0.27" (6.9mm) of precipitation is typically accumulated.

When it does not snow in Mount Hamilton?

In Mount Hamilton, California, snow does not fall in May through October.

How many hours of daylight does Mount Hamilton have in September?

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

Average temperature in September
Mount Hamilton, CA

Average temperature in September - Mount Hamilton, CA
  • Average high temperature in September: 74.2°F

The warmest month (with the highest average high temperature) is July (78.7°F).
The month with the lowest average high temperature is January (48.5°F).

  • Average low temperature in September: 58.4°F

The month with the highest average low temperature is July (63.3°F).
The coldest months (with the lowest average low temperature) are February and March (36.7°F).

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Average rainfall in September
Mount Hamilton, CA

Average rainfall in September - Mount Hamilton, CA
  • Average rainfall in September: 0.3"

The wettest month (with the highest rainfall) is January (4.4").
The driest month (with the least rainfall) is July (0").

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Average snowfall in September
Mount Hamilton, CA

Average snowfall in September - Mount Hamilton, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (5").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average daylight in September
Mount Hamilton, CA

Average daylight in September - Mount Hamilton, CA
  • Average daylight in September: 12.4h

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

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