Monthly weather forecast and climate
Mount Shasta, CA

The Lake Siskiyou on the base of Mount Shasta in California, and a view of the planted forest, the far suspension bridge, and snowy mountain peak
The Lake Siskiyou on the base of Mount Shasta in California, and a view of the planted forest, the far suspension bridge, and snowy mountain peak

Weather in January

January is a chilly winter month in Mount Shasta, California, with temperature in the range of an average low of 28.8°F (-1.8°C) and an average high of 43.2°F (6.2°C). In Mount Shasta, the average high-temperature is essentially the same as in December - a chilly 43.2°F (6.2°C). Weather in January »

Weather in February

February, the last month of the winter, in Mount Shasta, is another chilly month, with average temperature ranging between max 44.1°F (6.7°C) and min 28.8°F (-1.8°C). In Mount Shasta, the average high-temperature in February is practically the same as in January - a still frosty 44.1°F (6.7°C). Weather in February »

Weather in March

The first month of the spring, March, is still a chilly month in Mount Shasta, California, with average temperature fluctuating between 30.4°F (-0.9°C) and 46.4°F (8°C). In Mount Shasta, the average high-temperature is almost the same as in February - a still frosty 46.4°F (8°C). Weather in March »

Weather in April

April is a fresh spring month in Mount Shasta, California, with average temperature varying between 33.4°F (0.8°C) and 54°F (12.2°C). In Mount Shasta, the average high-temperature in April marginally rises, from a chilly 46.4°F (8°C) in March, to a cool 54°F (12.2°C). Weather in April »

Weather in May

May, the last month of the spring, in Mount Shasta, is an enjoyable month, with average temperature ranging between min 39.2°F (4°C) and max 63.3°F (17.4°C). In Mount Shasta, the average high-temperature rises, from a cool 54°F (12.2°C) in April, to an enjoyable 63.3°F (17.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Mount Shasta, California, with temperature in the range of an average high of 73.9°F (23.3°C) and an average low of 45.9°F (7.7°C). In Mount Shasta, the average high-temperature in June rises, from an enjoyable 63.3°F (17.4°C) in May, to a moderately hot 73.9°F (23.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Mount Shasta, California, with average temperature fluctuating between 83.8°F (28.8°C) and 52.2°F (11.2°C). The warmest month is July, with an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 52.2°F (11.2°C). In July, the average heat index is appraised at 84.4°F (29.1°C). Weather in July »

Weather in August

August, the last month of the summer, in Mount Shasta, is also a moderately hot month, with average temperature varying between 83.5°F (28.6°C) and 51.8°F (11°C). In August, the average high-temperature is relatively the same as in July - a still warm 83.5°F (28.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Mount Shasta, California, with average temperature varying between 76.1°F (24.5°C) and 46.4°F (8°C). In Mount Shasta, the average high-temperature marginally drops, from 83.5°F (28.6°C) in August, to a still moderately hot 76.1°F (24.5°C). Weather in September »

Weather in October

October, like September, in Mount Shasta, California, is another enjoyable autumn month, with average temperature ranging between min 39.4°F (4.1°C) and max 62.4°F (16.9°C). In Mount Shasta, the average high-temperature in October drops, from a moderately hot 76.1°F (24.5°C) in September, to a comfortable 62.4°F (16.9°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Mount Shasta, California, with temperature in the range of an average low of 32.2°F (0.1°C) and an average high of 49.3°F (9.6°C). In November, the average high-temperature drops, from an enjoyable 62.4°F (16.9°C) in October, to a frosty 49.3°F (9.6°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Mount Shasta, California, with average temperature fluctuating between 40.8°F (4.9°C) and 27.1°F (-2.7°C). With an average high-temperature of 40.8°F (4.9°C) and an average low-temperature of 27.1°F (-2.7°C), December is the coldest month. Weather in December »
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FAQ

How much does it rain in Mount Shasta?

Throughout the year, in Mount Shasta, California, there are 90.7 rainfall days, and 26.38" (670mm) of precipitation is accumulated.

When does it snow in Mount Shasta?

January through May, September through December are months with snowfall in Mount Shasta.

How much does it snow in Mount Shasta?

In Mount Shasta, during the entire year, snow falls for 50.2 days, and aggregates up to 81.42" (2068mm) of snow.

When does it snow the most in Mount Shasta?

January is the month with the most snowfall in Mount Shasta. Snow falls for 8.7 days and accumulates 19.21" (488mm) of snow.

What is the month with the lowest UV index in Mount Shasta?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mount Shasta, California.

What is the most humid month in Mount Shasta?

The most humid month is March, with an average relative humidity of 81%.

What is the rainiest month in Mount Shasta?

March is the month with the most rainfall in Mount Shasta. Rain falls for 12.3 days and accumulates 4.69" (119mm) of precipitation.

When it does not snow in Mount Shasta?

June through August are months without snowfall in Mount Shasta, California.

When are the longest days in Mount Shasta?

The month with the longest days in Mount Shasta, California, is June, with an average of 15.1h of daylight.

What is the month with the highest UV index in Mount Shasta?

Months with the highest UV index are June and July, with an average maximum UV index of 6.

What is the warmest month in Mount Shasta?

With an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 52.2°F (11.2°C), July is the warmest month in Mount Shasta.

What is the driest month in Mount Shasta?

The month with the least rainfall in Mount Shasta is July when the rain falls for 3.4 days and typically collects 0.16" (4mm) of precipitation.

What month has the most sunshine in Mount Shasta?

The month with the most sunshine in Mount Shasta, California, is July, with an average of 12.1h of sunshine.

What is the least humid month in Mount Shasta?

With an average relative humidity of 45%, August is the least humid month in Mount Shasta, California.

What is the coldest month in Mount Shasta?

December is the coldest month in Mount Shasta, California, with an average high-temperature of 40.8°F (4.9°C) and an average low-temperature of 27.1°F (-2.7°C).

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

December has the shortest days of the year, with an average of 9.2h of daylight.

What is the month with the least sunshine in Mount Shasta?

December has the least sunshine of the year, with an average of 5.4h of sunshine.

Average temperature
Mount Shasta, CA

Average temperature - Mount Shasta, CA

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (40.8°F).

The month with the highest average low temperature is July (52.2°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).

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Average pressure
Mount Shasta, CA

Average pressure - Mount Shasta, CA

The month with the highest atmospheric pressure is January (30.17").
Months with the lowest atmospheric pressure are June and August (29.94").

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Average wind speed
Mount Shasta, CA

Average wind speed - Mount Shasta, CA

The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average rainfall
Mount Shasta, CA

Average rainfall - Mount Shasta, CA

The wettest month (with the highest rainfall) is March (4.69").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days
Mount Shasta, CA

Average rainfall days - Mount Shasta, CA

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (2.3 days).

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Average snowfall
Mount Shasta, CA

Average snowfall - Mount Shasta, CA

The month with the highest snowfall is January (19.21").
Months with the least snowfall are June, July and August (0").

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Average snowfall days
Mount Shasta, CA

Average snowfall days - Mount Shasta, CA

The month with the highest number of snowfall days is December (10.9 days).
Months with the least snowfall days are July and August (0 days).

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Average daylight / Average sunshine
Mount Shasta, CA

Average daylight / Average sunshine - Mount Shasta, CA

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.2h).

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.4h).

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Average sunshine days
Mount Shasta, CA

Average sunshine days - Mount Shasta, CA

Months with the most sunshine days are July and August (25.7 days).
The month with the least sunshine days is March (12.3 days).

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Average UV index
Mount Shasta, CA

Average UV index - Mount Shasta, CA

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average visibility
Mount Shasta, CA

Average visibility - Mount Shasta, CA

Months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March and December (5mi).

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