Sun Valley
Idaho, USA
Long-term weather forecast
Long-term weather forecast

October 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
October, like September, is a moderate autumn month in Sun Valley, Idaho, with average temperature fluctuating between 22.8°F (-5.1°C) and 60.4°F (15.8°C).

Temperature

In October, the average high-temperature decreases, from a pleasant 72.3°F (22.4°C) in September, to a mild 60.4°F (15.8°C). The average low-temperature, in October, is 22.8°F (-5.1°C).

Rainfall

In Sun Valley, during 7 rainfall days, 0.9" (23.6mm) of precipitation is typically accumulated. Throughout the year, in Sun Valley, Idaho, there are 122 rainfall days, and 17.2" (438.1mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in Sun Valley is 11h.

Sunshine

In Sun Valley, Idaho, the average sunshine in October is 7h.

UV index

The average daily maximum UV index in Sun Valley is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in October in Sun Valley?

In October, the average high-temperature is 60.4°F (15.8°C), and the average low-temperature is 22.8°F (-5.1°C).

How much does it rain in Sun Valley in October?

In Sun Valley, during October, the rain falls for 7 days and regularly aggregates up to 0.9" (23.6mm) of precipitation.

How much does it snow in Sun Valley in October?

In Sun Valley, in October, 2.3" (58.4mm) of snow is typically accumulated.

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

The average length of the day in October is 11h.

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

In October, the average sunshine is 7h.

What is the UV index reading in October in Sun Valley?

The average daily maximum UV index in October in Sun Valley, Idaho, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in October - Sun Valley, ID
  • Average high temperature in October: 60.5°F

The warmest month (with the highest average high temperature) is July (82.5°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in October: 22.8°F

The month with the highest average low temperature is July (38.3°F).
The coldest month (with the lowest average low temperature) is January (0.3°F).

Average rainfall in October - Sun Valley, ID
  • Average rainfall in October: 0.9"

Wettest months (with the highest rainfall) are January and December (2.6").
The driest month (with the lowest rainfall) is July (0.7").

Average rainfall days in October - Sun Valley, ID
  • Average rainfall days in October: 7 days

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 snowfall in October - Sun Valley, ID
  • Average snowfall in October: 2.3"

The month with the highest snowfall is January (36").
Months with the lowest snowfall are June, July and August (0").

Average daylight in October / Average sunshine in October - Sun Valley, ID
  • Average daylight in October: 11h

The month with the longest days is June (Average daylight: 15.4h).
The month with shortest days is December (Average daylight: 9h).

  • Average sunshine in October: 7h

The month with most sunshine is July (Average sunshine: 12h).
Months with least sunshine are January, November and December (Average sunshine: 4).

Average UV index in October - Sun Valley, ID
  • Average UV index in October: 4

The month with the highest UV index is July (UV index 10).
The month with the lowest UV index is December (UV index 1).