Climate and monthly weather forecast
Sun Valley, TN

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Weather in January

January, the same as December, in Sun Valley, Tennessee, is another chilly winter month, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 43.5°F (6.4°C). In Sun Valley, the month of January is known for its lowest average temperatures, reaching a high of 43.5°F (6.4°C) and a low of 29.3°F (-1.5°C). Weather in January »

Weather in February

February, the last month of the winter in Sun Valley, is another chilly month, with an average temperature ranging between min 33.3°F (0.7°C) and max 48.7°F (9.3°C). The initiation of February records an average high-temperature of a still frosty 48.7°F (9.3°C), displaying a near consistency with the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a refreshing month in Sun Valley, Tennessee, with an average temperature ranging between min 40.1°F (4.5°C) and max 57.4°F (14.1°C). March comes with a subtle rise, with the average high-temperature adjusting from a chilly 48.7°F (9.3°C) in February to a moderate 57.4°F (14.1°C). Weather in March »

Weather in April

April in Sun Valley, Tennessee, is an agreeable spring month, with temperature in the range of an average high of 68.4°F (20.2°C) and an average low of 48.4°F (9.1°C). April brings a rise in Sun Valley's average high-temperature, moving from a mild 57.4°F (14.1°C) in March to a pleasant 68.4°F (20.2°C). Weather in April »

Weather in May

May, the last month of the spring in Sun Valley, is a warm month, with an average temperature varying between 76.6°F (24.8°C) and 56.3°F (13.5°C). The onset of May marks a slight increase in the average high-temperature, moving from an agreeable 68.4°F (20.2°C) in April to a warm 76.6°F (24.8°C). Weather in May »

Weather in June

June, the first month of the summer in Sun Valley, is still a warm month, with an average temperature varying between 84.7°F (29.3°C) and 62.4°F (16.9°C). The shift into June is accompanied by a modest temperature increase, with the average high-temperature edging up from a moderately hot 76.6°F (24.8°C) in May to a still warm 84.7°F (29.3°C). Weather in June »

Weather in July

July in Sun Valley, Tennessee, is a tropical summer month, with an average temperature fluctuating between 86.5°F (30.3°C) and 65.5°F (18.6°C). In Sun Valley, the peak temperatures are generally noted in July, averaging a high of 86.5°F (30.3°C) and a low of 65.5°F (18.6°C). July's heat index is evaluated at a very hot 100.4°F (38°C). Weather in July »

Weather in August

August, the last month of the summer in Sun Valley, is also a hot month, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 86.2°F (30.1°C). Sun Valley's shift from July to August is accompanied by an average high-temperature of a still tropical 86.2°F (30.1°C), a slight deviation from 86.5°F (30.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Sun Valley, Tennessee, with an average temperature varying between 59.7°F (15.4°C) and 80.1°F (26.7°C). During the shift to September, Sun Valley records a mild decrease in average high-temperature, moving from a tropical 86.2°F (30.1°C) in August to a warm 80.1°F (26.7°C). Weather in September »

Weather in October

October, the same as September, in Sun Valley, Tennessee, is an agreeable autumn month, with an average temperature varying between 48.7°F (9.3°C) and 68.5°F (20.3°C). October comes with a decrease in the average high-temperature, falling from a warm 80.1°F (26.7°C) in September to an agreeable 68.5°F (20.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Sun Valley, Tennessee, with an average temperature varying between 56.3°F (13.5°C) and 39°F (3.9°C). Welcoming November, Sun Valley observes a shift in the average high-temperature, falling from October's agreeable 68.5°F (20.3°C) to a mild 56.3°F (13.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Sun Valley, Tennessee, with an average temperature ranging between min 34.7°F (1.5°C) and max 48.2°F (9°C). The arrival of December suggests a slight decrease in the average high-temperature, moving from a moderate 56.3°F (13.5°C) in November to a frosty 48.2°F (9°C). Weather in December »
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Sun Valley's coldest month, January, registers temperatures that range from a high of 43.5°F (6.4°C) to a low of 29.3°F (-1.5°C).

How many days does it rain in Sun Valley?

In Sun Valley, Tennessee, during the entire year, the rain falls for 173.9 days and collects up to 38.31" (973mm) of precipitation.

When does it snow?

Months with snowfall are January through April, November and December.

How much does it snow?

In Sun Valley, during the entire year, snow falls for 13.7 days and aggregates up to 2.99" (76mm) of snow.

When is the lowest UV index?

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.

What are the most humid months?

The months with the highest humidity are February, March and December, with an average relative humidity of 79%.

What is the rainiest month?

The month with the most rainfall is February, when the rain falls for 13.8 days and typically aggregates up to 4.09" (104mm) of precipitation.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 3.4 days and accumulates 1.02" (26mm) of snow.

What is the month with the least sunshine?

With an average of 4.4h of sunshine, February has the least sunshine of the year.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

When it does not snow?

In Sun Valley, snow does not fall in May through October.

What are the months with the highest UV index?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Sun Valley.

When are the longest days in Sun Valley?

The month with the longest days is June, with an average of 14h and 36min of daylight.

What month has the most sunshine?

June has the most sunshine of the year, with an average of 10.6h of sunshine.

What time of the year is the hottest?

With an average high-temperature of 86.5°F (30.3°C) and an average low-temperature of 65.5°F (18.6°C), July is the warmest month.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 12 days and typically collects 2.01" (51mm) of precipitation.

What is the least humid month?

November is the least humid month in Sun Valley, with an average relative humidity of 75%.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 42min of daylight.

Average temperature
Sun Valley, TN

Average temperature - Sun Valley, TN

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (43.5°F).

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (29.3°F).

Average pressure
Sun Valley, TN

Average pressure - Sun Valley, TN

The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed
Sun Valley, TN

Average wind speed - Sun Valley, TN

The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).

Average humidity
Sun Valley, TN

Average humidity - Sun Valley, TN

The months with the highest relative humidity are February, March and December (79%).
The month with the lowest relative humidity is November (75%).

Average rainfall
Sun Valley, TN

Average rainfall - Sun Valley, TN

The wettest month (with the highest rainfall) is February (4.09").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days
Sun Valley, TN

Average rainfall days - Sun Valley, TN

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is November (10.8 days).

Average snowfall
Sun Valley, TN

Average snowfall - Sun Valley, TN

The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Sun Valley, TN

Average snowfall days - Sun Valley, TN

The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Sun Valley, TN

Average daylight / Average sunshine - Sun Valley, TN

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

Average sunshine days
Sun Valley, TN

Average sunshine days - Sun Valley, TN

The month with the most sunshine days is October (18.2 days).
The months with the least sunshine days are February and July (11.3 days).

Average UV index
Sun Valley, TN

Average UV index - Sun Valley, TN

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average visibility
Sun Valley, TN

Average visibility - Sun Valley, TN

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

Sun Valley, Tennessee, USA

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