Weather in December
The first month of the winter, December, is also a frosty month in Mount Hamilton, California, with an average temperature ranging between min 37°F (2.8°C) and max 48.9°F (9.4°C).
On the first day of the month, sunrise is at 7:02 am and sunset at 4:49 pm. On the last day of December, in Mount Hamilton, sunrise is at 7:20 am and sunset at 4:59 pm PST.
[Resources]Temperature
The move into December indicates a slight reduction in the average high-temperature, down from November's fresh 54.9°F (12.7°C) to a frosty 48.9°F (9.4°C). Nighttime temperatures in Mount Hamilton consistently average a wintry 37°F (2.8°C) during December.Rainfall
During December, Mount Hamilton regularly aggregates up to 4.06" (103mm) of precipitation. During the entire year, Mount Hamilton aggregates up to 23.62" (600mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Mount Hamilton. In Mount Hamilton, in December, 2.28" (58mm) of snow is typically accumulated. Throughout the year, 17.72" (450mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:49 pm. On the last day of December, in Mount Hamilton, sunrise is at 7:20 am and sunset at 4:59 pm PST.
Frequently asked questions
What is the average December temperature in Mount Hamilton?
In December, the average high-temperature and low-temperature in Mount Hamilton are 48.9°F (9.4°C) and 37°F (2.8°C) respectively.
How much does it rain in Mount Hamilton in December?
During December, Mount Hamilton regularly aggregates up to 4.06" (103mm) of precipitation.
How much does it snow in Mount Hamilton in December?
Throughout December, in Mount Hamilton, California, 2.28" (58mm) of snow is accumulated.
What is the month with the shortest days in Mount Hamilton?
With an average of 9h and 36min of daylight, December has the shortest days of the year.
What is the average length of the day in December in Mount Hamilton?
In December, the average day length in Mount Hamilton, California, is 9h and 38min.
When is the sunrise / sunset in December in Mount Hamilton?
On the first day of December in Mount Hamilton, sunrise is at 7:02 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:59 pm PST.
Average temperature in December
Mount Hamilton, CA
- Average high temperature in December: 49°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 December: 37.1°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 December
Mount Hamilton, CA
- Average rainfall in December: 4"
The wettest month (with the highest rainfall) is January (4.4").
The driest month (with the least rainfall) is July (0").
Average snowfall in December
Mount Hamilton, CA
- Average snowfall in December: 2.3"
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 December
Mount Hamilton, CA
- Average daylight in December: 9h and 4min
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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