October weather forecast and climate
Sioux Falls, SD

The Sioux Falls in South Dakota, flowing downstream over rocks under the perfect evening skyline
The Sioux Falls in South Dakota, flowing downstream over rocks under the perfect evening skyline

Weather in October

October, like September, is another mild autumn month in Sioux Falls, South Dakota, with temperature in the range of an average low of 41.2°F (5.1°C) and an average high of 57.4°F (14.1°C).

Temperature

In Sioux Falls, the average high-temperature in October significantly decreases, from a moderately hot 74.3°F (23.5°C) in September, to a mild 57.4°F (14.1°C). In Sioux Falls, the average low-temperature is 41.2°F (5.1°C).

Humidity

October is the least humid month in Sioux Falls, with an average relative humidity of 66%.

Rainfall

In Sioux Falls, in October, it is raining for 8.6 days, with typically 1.69" (43mm) of accumulated precipitation. In Sioux Falls, during the entire year, the rain falls for 117.1 days and collects up to 20.71" (526mm) of precipitation.

Snowfall

Months with snowfall in Sioux Falls are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 1.5 snowfall days, it receives 0.43" (11mm) of snow. Throughout the year, in Sioux Falls, there are 48.7 snowfall days, and 18.23" (463mm) of snow is accumulated.

Daylight

In October, the average length of the day is 11h.

Sunshine

The average sunshine in October is 6.1h.

UV index

The average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 3 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in October in Sioux Falls?

In Sioux Falls, in October, the average high-temperature is 57.4°F (14.1°C), and the average low-temperature is 41.2°F (5.1°C).

What is the least humid month in Sioux Falls?

October is the least humid month in Sioux Falls, with an average relative humidity of 66%.

What is the average humidity in October in Sioux Falls?

In Sioux Falls, South Dakota, the average relative humidity in October is 66%.

How much does it rain in Sioux Falls in October?

In Sioux Falls, South Dakota, in October, it is raining for 8.6 days, with typically 1.69" (43mm) of accumulated precipitation.

When does it start snowing in Sioux Falls?

October is the first month it typically snows in Sioux Falls. Throughout October, in the average 1.5 snowfall days, it receives 0.43" (11mm) of snow.

What is the average length of the day in October in Sioux Falls?

In October, the average length of the day in Sioux Falls is 11h.

How long on average sun shines in October in Sioux Falls?

The average sunshine in October is 6.1h.

What is the UV index intensity in October in Sioux Falls?

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in October
Sioux Falls, SD

Average temperature in October - Sioux Falls, SD
  • Average high temperature in October: 57.4°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in October: 41.2°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).

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Average pressure in October
Sioux Falls, SD

Average pressure in October - Sioux Falls, SD
  • Average pressure in October: 29.99"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in October
Sioux Falls, SD

Average wind speed in October - Sioux Falls, SD
  • Average wind speed in October: 10.5mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in October
Sioux Falls, SD

Average humidity in October - Sioux Falls, SD
  • Average humidity in October: 66%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (66%).

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Average rainfall in October
Sioux Falls, SD

Average rainfall in October - Sioux Falls, SD
  • Average rainfall in October: 1.69"

The wettest month (with the highest rainfall) is June (3.27").
The driest months (with the least rainfall) are January, February and November (0.67").

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Average rainfall days in October
Sioux Falls, SD

Average rainfall days in October - Sioux Falls, SD
  • Average rainfall days in October: 8.6 days

The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).

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Average snowfall in October
Sioux Falls, SD

Average snowfall in October - Sioux Falls, SD
  • Average snowfall in October: 0.43"

The month with the highest snowfall is February (4.25").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Sioux Falls, SD

Average snowfall days in October - Sioux Falls, SD
  • Average snowfall days in October: 1.5 days

The month with the highest number of snowfall days is January (11.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in October /
Average sunshine in October
Sioux Falls, SD

Average daylight in October / Average sunshine in October - Sioux Falls, SD
  • Average daylight in October: 11h

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

  • Average sunshine in October: 6.1h

The month with the most sunshine is July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 4h).

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Average sunshine days in October
Sioux Falls, SD

Average sunshine days in October - Sioux Falls, SD
  • Average sunshine days in October: 19.5 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (10 days).

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Average UV index in October
Sioux Falls, SD

Average UV index in October - Sioux Falls, SD
  • Average UV index in October: 3

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

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Average cloud cover in October
Sioux Falls, SD

Average cloud cover in October - Sioux Falls, SD
  • Average cloud cover in October: 34

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in October
Sioux Falls, SD

Average visibility in October - Sioux Falls, SD
  • Average visibility in October: 6mi

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

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