October weather forecast
Sun Valley, TN

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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).

Temperature

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). During October, Sun Valley's temperature averages to a frosty 48.7°F (9.3°C) at night.

Humidity

The average relative humidity in October is 76%.

Rainfall

In Sun Valley, during October, the rain falls for 11.5 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, there are 173.9 rainfall days, and 38.31" (973mm) of precipitation is accumulated.

Snowfall

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

Daylight

In October, the average length of the day is 11h and 15min.
On the first day of the month, sunrise is at 6:37 am and sunset at 6:25 pm. On the last day of October, sunrise is at 7:04 am and sunset at 5:46 pm CDT.

Sunshine

In Sun Valley, the average sunshine in October is 7.2h.

UV index

In October, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 3 during October leads to these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Enhance your sun protection with tightly woven, yet airy clothing. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature?

Sun Valley in October has an average high-temperature of 68.5°F (20.3°C) and an average low-temperature of 48.7°F (9.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 98.6°F (37°C).

What is the average humidity in October?

In October, the average relative humidity is 76%.

How many days does it rain in October?

In Sun Valley, during October, the rain falls for 11.5 days and regularly aggregates up to 2.91" (74mm) of precipitation.

When it does not snow in Sun Valley?

May through October are months without snowfall.

Does it snow in October?

In Sun Valley, in October, it doesn't snow. In November, it regularly snows.

How many hours of daylight does Sun Valley have in October?

In Sun Valley, Tennessee, the average day length in October is 11h and 15min.

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 6:37 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:46 pm CDT.

How long on average sun shines in October in Sun Valley?

In October, the average sunshine duration is 7.2h.

What is the UV index intensity in October?

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Sun Valley, TN

Average temperature in October - Sun Valley, TN
  • Average high temperature in October: 68.5°F

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).

  • Average low temperature in October: 48.7°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 in October
Sun Valley, TN

Average pressure in October - Sun Valley, TN
  • Average pressure in October: 30.06"Hg

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 in October
Sun Valley, TN

Average wind speed in October - Sun Valley, TN
  • Average wind speed in October: 5.7mph

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 in October
Sun Valley, TN

Average humidity in October - Sun Valley, TN
  • Average humidity in October: 76%

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 in October
Sun Valley, TN

Average rainfall in October - Sun Valley, TN
  • Average rainfall in October: 2.91"

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 in October
Sun Valley, TN

Average rainfall days in October - Sun Valley, TN
  • Average rainfall days in October: 11.5 days

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 in October
Sun Valley, TN

Average snowfall in October - Sun Valley, TN
  • Average snowfall in October: 0"

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 in October
Sun Valley, TN

Average snowfall days in October - Sun Valley, TN
  • Average snowfall days in October: 0.1 days

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 in October /
Average sunshine in October
Sun Valley, TN

Average daylight in October / Average sunshine in October - Sun Valley, TN
  • Average daylight in October: 11h and 2min

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).

  • Average sunshine in October: 7h and 1min

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 in October
Sun Valley, TN

Average sunshine days in October - Sun Valley, TN
  • Average sunshine days in October: 18.2 days

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 in October
Sun Valley, TN

Average UV index in October - Sun Valley, TN
  • Average UV index in October: 3

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 cloud cover in October
Sun Valley, TN

Average cloud cover in October - Sun Valley, TN
  • Average cloud cover in October: 35

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in October
Sun Valley, TN

Average visibility in October - Sun Valley, TN
  • Average visibility in October: 6mi

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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