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).
On the first day of the month, sunrise is at 6:37 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:50 pm PDT.
Temperature
The commencement of September notes an average high-temperature of a still moderately hot 74.1°F (23.4°C), exhibiting little difference from the previous month. Mount Hamilton's nighttime temperature in September drops to an average of 58.5°F (14.7°C).Rainfall
During September, Mount Hamilton regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, 23.62" (600mm) 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 12h and 25min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:34 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:50 pm PDT.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
The high-temperature during September is 74.1°F (23.4°C) and the low-temperature is 58.5°F (14.7°C).
How much does it rain in Mount Hamilton in September?
In Mount Hamilton, in September, 0.28" (7mm) of precipitation is typically accumulated.
When it does not snow?
In Mount Hamilton, snow does not fall in May through October.
How many hours of daylight does Mount Hamilton have in September?
In Mount Hamilton, the average day length in September is 12h and 25min.
When are sunrise and sunset in September?
On the first day of September, 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.
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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