October weather forecast
Yankton, SD

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Weather in October

October in Yankton, South Dakota, is a clear departure from the warm temperatures of September towards the chill of November. This month provides a visually stunning array of fall colors, with temperatures reaching a high of 59.4°F (15.2°C). The weather remains ideal for long walks amidst nature, barbecue parties, and brisk morning jogs. The fading fall foliage and the arrival of pumpkin harvest mark the city's readiness to welcome the winter season. With lower chances of rain and fewer daylight hours, the city gradually steps into an early winter mode.

Temperature

October in Yankton signals a clear decrease in the average high-temperature, dropping from September's moderately hot 76.1°F (24.5°C) to a mild 59.4°F (15.2°C). Throughout the October nights, Yankton encounters a low-temperature of 42.6°F (5.9°C).

Humidity

October is the least humid month in Yankton, with an average relative humidity of 64%.

Rainfall

In Yankton, in October, it is raining for 9.3 days, with typically 1.73" (44mm) of accumulated precipitation. In Yankton, during the entire year, the rain falls for 117.9 days and collects up to 21.93" (557mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows in Yankton. Throughout October, in the average 0.8 snowfall days, it receives 0.39" (10mm) of snow. Throughout the year, there are 37.4 snowfall days, and 14.45" (367mm) of snow is accumulated.

Daylight

In October, the average length of the day in Yankton is 11h and 2min.
On the first day of October, sunrise is at 7:27 am and sunset at 7:10 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 6:22 pm CDT.

Sunshine

In October, the average sunshine is 6.4h.

UV index

In Yankton, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum daily UV index of 3 during October morphs into the following directions:
Act with care - Obligation to protect against skin and eye damage is highlighted. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What are the temperatures in Yankton in October?

The average high-temperature, in October, in Yankton, is 59.4°F (15.2°C), while the average low-temperature is 42.6°F (5.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 89.6°F (32°C).

What is the least humid month in Yankton?

The least humid month is October, with an average relative humidity of 64%.

What is the average humidity in October in Yankton?

In Yankton, the average relative humidity in October is 64%.

How much does it rain in Yankton in October?

In Yankton, South Dakota, during October, the rain falls for 9.3 days and regularly aggregates up to 1.73" (44mm) of precipitation.

When does it start to snow in Yankton?

October is the first month it typically snows. Throughout October, in the average 0.8 snowfall days, it receives 0.39" (10mm) of snow.

What is the average length of the day in October in Yankton?

The average day length in October in Yankton, South Dakota, is 11h and 2min.

When is the sunrise / sunset in October in Yankton?

In October, on the first day of the month, sunrise is at 7:27 am and sunset at 7:10 pm. On the last day of the month, in Yankton, sunrise is at 8:03 am and sunset at 6:22 pm CDT.

How long on average sun shines in October in Yankton?

In Yankton, the average sunshine duration in October is 6.4h.

What is the UV index reading in October in Yankton?

In Yankton, the average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Yankton, SD

Average temperature in October - Yankton, SD
  • Average high temperature in October: 59.4°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in October: 42.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

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Average pressure in October
Yankton, SD

Average pressure in October - Yankton, SD
  • Average pressure in October: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in October
Yankton, SD

Average wind speed in October - Yankton, SD
  • Average wind speed in October: 10.3mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).

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Average humidity in October
Yankton, SD

Average humidity in October - Yankton, SD
  • Average humidity in October: 64%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).

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Average rainfall in October
Yankton, SD

Average rainfall in October - Yankton, SD
  • Average rainfall in October: 1.73"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").

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Average rainfall days in October
Yankton, SD

Average rainfall days in October - Yankton, SD
  • Average rainfall days in October: 9.3 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in October
Yankton, SD

Average snowfall in October - Yankton, SD
  • Average snowfall in October: 0.39"

The month with the highest snowfall is December (2.95").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in October
Yankton, SD

Average snowfall days in October - Yankton, SD
  • Average snowfall days in October: 0.8 days

The month with the highest number of snowfall days is January (9.7 days).
The 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
Yankton, SD

Average daylight in October / Average sunshine in October - Yankton, SD
  • Average daylight in October: 11h and 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in October: 6h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in October
Yankton, SD

Average sunshine days in October - Yankton, SD
  • Average sunshine days in October: 19.5 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).

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Average UV index in October
Yankton, SD

Average UV index in October - Yankton, SD
  • Average UV index in October: 3

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in October
Yankton, SD

Average cloud cover in October - Yankton, SD
  • Average cloud cover in October: 32

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).

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Average visibility in October
Yankton, SD

Average visibility in October - Yankton, SD
  • Average visibility in October: 6mi

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

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Yankton, South Dakota, USA

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