Monthly weather forecast and climate
Sun Valley, ID

The iconic Sun Valley, Idaho, in a stunning hilly landscape on either side located within the famous White Cloud Wilderness, white clouds above
The iconic Sun Valley, Idaho, in a stunning hilly landscape on either side located within the famous White Cloud Wilderness, white clouds above
January, the same as December, in Sun Valley, Idaho, is another subzero cold winter month, with average temperature fluctuating between 30°F (-1.1°C) and 0.3°F (-17.6°C). With an average high-temperature of 30°F (-1.1°C) and an average low-temperature of 0.3°F (-17.6°C), January is the coldest month. Weather in January »
The last month of the winter, February, is a cold month in Sun Valley, Idaho, with temperature in the range of an average high of 36°F (2.2°C) and an average low of 3.6°F (-15.8°C). In February, the average high-temperature is 36°F (2.2°C), and the average low-temperature is 3.6°F (-15.8°C). Weather in February »

March, the first month of the spring, in Sun Valley, is also a cold month, with average temperature fluctuating between 9.5°F (-12.5°C) and 40.3°F (4.6°C). In Sun Valley, in March, the average high-temperature is 40.3°F (4.6°C), and the average low-temperature is 9.5°F (-12.5°C). Weather in March »

April in Sun Valley, Idaho, is a cool spring month, with average temperature varying between 21.6°F (-5.8°C) and 52.2°F (11.2°C). The average high-temperature, is 52.2°F (11.2°C), while the average low-temperature is 21.6°F (-5.8°C). Weather in April »

The last month of the spring, May, is a comfortable month in Sun Valley, Idaho, with average temperature fluctuating between 63.9°F (17.7°C) and 29.1°F (-1.6°C). In May, the average high-temperature is 63.9°F (17.7°C), and the average low-temperature is 29.1°F (-1.6°C). Weather in May »

June, the first month of the summer, in Sun Valley, is a pleasant month, with average temperature varying between 34.5°F (1.4°C) and 71.2°F (21.8°C). The average high-temperature, in June, is 71.2°F (21.8°C), while the average low-temperature is 34.5°F (1.4°C). Weather in June »

July in Sun Valley, Idaho, is a warm summer month, with temperature in the range of an average low of 38.3°F (3.5°C) and an average high of 82.6°F (28.1°C). With an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 38.3°F (3.5°C), July is the warmest month. Weather in July »

August, the last month of the summer, in Sun Valley, is another warm month, with average temperature varying between 37°F (2.8°C) and 81.7°F (27.6°C). In Sun Valley, Idaho, in August, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 37°F (2.8°C). Weather in August »

September, the first month of the autumn, in Sun Valley, is still a pleasant month, with average temperature fluctuating between 72.3°F (22.4°C) and 29.8°F (-1.2°C). In Sun Valley, the average high-temperature is 72.3°F (22.4°C), and the average low-temperature is 29.8°F (-1.2°C). Weather in September »

October, the same as September, in Sun Valley, Idaho, is a mild autumn month, with average temperature ranging between min. 22.8°F (-5.1°C) and max. 60.4°F (15.8°C). The average high-temperature, is 60.4°F (15.8°C), while the average low-temperature is 22.8°F (-5.1°C). Weather in October »

November, the last month of the autumn, in Sun Valley, is another chilly month, with temperature in the range of an average low of 14.4°F (-9.8°C) and an average high of 44.1°F (6.7°C). In Sun Valley, Idaho, the average high-temperature is 44.1°F (6.7°C), and the average low-temperature is 14.4°F (-9.8°C). Weather in November »

December, the first month of the winter, in Sun Valley, is also a cold month, with temperature in the range of an average high of 32.4°F (0.2°C) and an average low of 3.6°F (-15.8°C). In Sun Valley, in December, the average high-temperature is 32.4°F (0.2°C), and the average low-temperature is 3.6°F (-15.8°C). Weather in December »

What is the coldest month in Sun Valley?

January is the coldest month in Sun Valley, with an average high-temperature of 30°F (-1.1°C) and an average low-temperature of 0.3°F (-17.6°C).

How many days does it rain in Sun Valley?

Throughout the year, there are 122 rainfall days, and 17.2" (438.1mm) of precipitation is accumulated.

When does it snow in Sun Valley?

January through May, September through December are months with snowfall in Sun Valley.

How much does it snow in Sun Valley?

Throughout the year, 121.1" (3075.9mm) of snow is accumulated.

When does it snow the most in Sun Valley?

January is the month with the most snowfall in Sun Valley, Idaho, with 36" (914.4mm) of accumulated snow.

What is the month with the least sunshine in Sun Valley?

January, November and December, with an average of 4h of sunshine, are months with the least sunshine in Sun Valley, Idaho.

When are the longest days in Sun Valley?

With an average of 15.4h of daylight, June has the longest days of the year.

What is the warmest month in Sun Valley?

July is the warmest month in Sun Valley, Idaho, with an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 38.3°F (3.5°C).

What is the driest month in Sun Valley?

The month with the least rainfall in Sun Valley is July when the rain falls for 7 days and typically collects 0.7" (18.5mm) of precipitation.

What month has the most sunshine in Sun Valley?

With an average of 12h of sunshine, July has the most sunshine of the year in Sun Valley, Idaho.

When is the highest UV index in Sun Valley?

The month with the highest UV index in Sun Valley is July, with an average UV index of 10.

What is the wettest month in Sun Valley?

December is the month with the most rainfall in Sun Valley. Rain falls for 13 days and accumulates 2.6" (66.3mm) of precipitation.

What is the month with the shortest days in Sun Valley?

December has the shortest days of the year, with an average of 9h of daylight.

When is the lowest UV index in Sun Valley?

The month with the lowest UV index in Sun Valley, Idaho, is December, with an average UV index of 1.
Average rainfall - Sun Valley, ID
Average rainfall days - Sun Valley, ID

Months with the highest number of rainy days are January, March and December (13 days).
Months with the lowest number of rainy days are July and October (7 days).

Average daylight / Average sunshine - Sun Valley, ID
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