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

September weather forecast and climate
Mount Hamilton, CA

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

Temperature

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

Rainfall

In Mount Hamilton, in September, 0.3" (6.9mm) of precipitation is typically accumulated. During the entire year, Mount Hamilton aggregates up to 23.6" (600.2mm) of precipitation.

Snowfall

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

Daylight

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

What is the temperature in September in Mount Hamilton?

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

How much does it rain in Mount Hamilton in September?

In Mount Hamilton, in September, 0.3" (6.9mm) of precipitation is typically accumulated.

When it does not snow in Mount Hamilton?

May through October are months without snowfall in Mount Hamilton.

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

The average length of the day in September is 12.4h.
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).
Coldest months (with the lowest average low temperature) are February and March (36.7°F).

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 lowest rainfall) is July (0").

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

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

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 shortest days is December (Average daylight: 9.6h).