Monthly weather forecast and climate
Mount Hamilton, CA

Weather in January

January, like December, is a frosty winter month in Mount Hamilton, California, with average temperature varying between 36.9°F (2.7°C) and 48.6°F (9.2°C). The coldest month is January, with an average high-temperature of 48.6°F (9.2°C) and an average low-temperature of 36.9°F (2.7°C). Weather in January »

Weather in February

February, the last month of the winter, in Mount Hamilton, is another chilly month, with average temperature fluctuating between 48.9°F (9.4°C) and 36.7°F (2.6°C). In Mount Hamilton, the average high-temperature is relatively the same as in January - a still chilly 48.9°F (9.4°C). Weather in February »

Weather in March

March, the first month of the spring, in Mount Hamilton, is a cool month, with average temperature ranging between min 36.7°F (2.6°C) and max 50.2°F (10.1°C). In March, the average high-temperature is essentially the same as in February - a cool 50.2°F (10.1°C). Weather in March »

Weather in April

April, the same as March, is another fresh spring month in Mount Hamilton, California, with average temperature fluctuating between 55.2°F (12.9°C) and 39.6°F (4.2°C). In Mount Hamilton, the average high-temperature is essentially the same as in March - a still fresh 55.2°F (12.9°C). Weather in April »

Weather in May

May, the last month of the spring, in Mount Hamilton, is a comfortable month, with average temperature fluctuating between 63.1°F (17.3°C) and 46.2°F (7.9°C). In Mount Hamilton, the average high-temperature slightly increases, from a cool 55.2°F (12.9°C) in April, to a comfortable 63.1°F (17.3°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Mount Hamilton, California, with temperature in the range of an average low of 54.3°F (12.4°C) and an average high of 71.4°F (21.9°C). In Mount Hamilton, the average high-temperature in June marginally rises, from a comfortable 63.1°F (17.3°C) in May, to a pleasant 71.4°F (21.9°C). Weather in June »

Weather in July

July in Mount Hamilton, California, is a warm summer month, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 63.3°F (17.4°C). With an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 63.3°F (17.4°C), July is the warmest month. Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Mount Hamilton, California, with temperature in the range of an average low of 62.4°F (16.9°C) and an average high of 78.1°F (25.6°C). In August, the average high-temperature is almost the same as in July - a still warm 78.1°F (25.6°C). Weather in August »

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). In September, the average high-temperature is almost the same as in August - a still moderately hot 74.1°F (23.4°C). Weather in September »

Weather in October

October, like September, in Mount Hamilton, California, is another comfortable autumn month, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 50.7°F (10.4°C). In October, the average high-temperature marginally drops, from a warm 74.1°F (23.4°C) in September, to a comfortable 65.3°F (18.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Mount Hamilton, California, with average temperature varying between 42.1°F (5.6°C) and 54.9°F (12.7°C). In November, the average high-temperature drops, from an enjoyable 65.3°F (18.5°C) in October, to a cool 54.9°F (12.7°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Mount Hamilton, California, with average temperature ranging between max 48.9°F (9.4°C) and min 37°F (2.8°C). In December, the average high-temperature marginally drops, from a fresh 54.9°F (12.7°C) in November, to a frosty 48.9°F (9.4°C). Weather in December »
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FAQ

What is the coldest month in Mount Hamilton?

With an average high-temperature of 48.6°F (9.2°C) and an average low-temperature of 36.9°F (2.7°C), January is the coldest month in Mount Hamilton.

How much does it rain in Mount Hamilton?

During the entire year, Mount Hamilton aggregates up to 23.63" (600.2mm) of precipitation.

What is the wettest month in Mount Hamilton?

The month with the most rainfall in Mount Hamilton, California, is January when 4.43" (112.5mm) of precipitation is typically aggregated.

When does it snow in Mount Hamilton?

Months with snowfall in Mount Hamilton, California, are January through April, November and December.

How much does it snow in Mount Hamilton?

In Mount Hamilton, during the entire year, snow aggregates up to 17.7" (449.6mm).

When does it snow the most in Mount Hamilton?

January is the month with the most snowfall, with 5" (127mm) of accumulated snow.

When it does not snow in Mount Hamilton?

May through October are months without snowfall in Mount Hamilton.

When are the longest days in Mount Hamilton?

June has the longest days of the year, with an average of 14.7h of daylight.

What is the warmest month in Mount Hamilton?

The warmest month in Mount Hamilton, California, is July, with an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 63.3°F (17.4°C).

What is the driest month in Mount Hamilton?

July is the month with the least rainfall in Mount Hamilton, with 0.03" (0.8mm) of accumulated precipitation.

What is the month with the shortest days in Mount Hamilton?

December has the shortest days of the year in Mount Hamilton, with an average of 9.6h of daylight.

Average temperature
Mount Hamilton, CA

Average temperature - Mount Hamilton, CA

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).

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
Mount Hamilton, CA

Average rainfall - Mount Hamilton, CA

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
Mount Hamilton, CA

Average snowfall - Mount Hamilton, CA

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
Mount Hamilton, CA

Average daylight - Mount Hamilton, CA

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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