Weather in September
The first month of the autumn, September, is also a moderately hot month in Mount Hamilton, California, with temperature in the range of an average low of 58.5°F (14.7°C) and an average high of 74.1°F (23.4°C).
On the first day of September in Mount Hamilton, sunrise is at 6:37 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:50 pm PDT.
Temperature
In September, Mount Hamilton experiences a minor shift in meteorological conditions with average high-temperatures marked at a still moderately hot 74.1°F (23.4°C), closely mirroring the climate in August. An average low-temperature of 58.5°F (14.7°C) is expected in Mount Hamilton during September.Rainfall
During September, Mount Hamilton regularly aggregates up to 0.28" (7mm) of precipitation. During the entire year, Mount Hamilton aggregates up to 23.62" (600mm) of precipitation.Snowfall
In Mount Hamilton, snow does not fall in May through October.Daylight
The average length of the day in September in Mount Hamilton is 12h and 25min.On the first day of September in Mount Hamilton, sunrise is at 6:37 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:50 pm PDT.
Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Mount Hamilton in September?
September temperatures in Mount Hamilton, California, vary between a high-temperature of 74.1°F (23.4°C) and a low-temperature of 58.5°F (14.7°C).
How much does it rain in Mount Hamilton in September?
Throughout September, 0.28" (7mm) of precipitation is accumulated.
When it does not snow in Mount Hamilton?
May through October are months without snowfall in Mount Hamilton, California.
How many hours of daylight does Mount Hamilton have in September?
The average day length in September is 12h and 25min.
When is the sunrise / sunset in September in Mount Hamilton?
In September, on the first day of the month, sunrise is at 6:37 am and sunset at 7:34 pm. On the last day of the month, in Mount Hamilton, California, sunrise is at 7:01 am and sunset at 6:50 pm PDT.
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).
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").
Average snowfall in September
Mount Hamilton, CA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average daylight in September
Mount Hamilton, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
Mount Hamilton, California, USA
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