October weather forecast
Rapid Valley, SD

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Weather in October

October, like September, is a moderate autumn month in Rapid Valley, South Dakota, with an average temperature fluctuating between 56.5°F (13.6°C) and 39.9°F (4.4°C).

Temperature

The shift into October is characterized by a noticeable reduction in the average high-temperature, decreasing from September's moderately hot 73.9°F (23.3°C) to a mild 56.5°F (13.6°C). Throughout October, Rapid Valley records an average temperature of 39.9°F (4.4°C) at night.

Humidity

The average relative humidity in October in Rapid Valley is 58%.

Rainfall

In Rapid Valley, in October, during 8.6 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Rapid Valley, during the entire year, the rain falls for 118.8 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Rapid Valley, during October, snow falls for 2.6 days and regularly aggregates up to 1.5" (38mm) of snow. In Rapid Valley, during the entire year, snow falls for 50.4 days and aggregates up to 24.41" (620mm) of snow.

Daylight

The average length of the day in October in Rapid Valley, South Dakota, is 10h and 59min.
On the first day of October in Rapid Valley, sunrise is at 6:51 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:43 pm MDT.

Sunshine

In Rapid Valley, the average sunshine in October is 7.3h.

UV index

In October, the average daily maximum UV index in Rapid Valley is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 3 in October transforms into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What are the temperatures in Rapid Valley in October?

Rapid Valley in October has an average high-temperature of 56.5°F (13.6°C) and an average low-temperature of 39.9°F (4.4°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 84.2°F (29°C).

What is the average humidity in October in Rapid Valley?

In Rapid Valley, South Dakota, the average relative humidity in October is 58%.

How much does it rain in Rapid Valley in October?

In October, the rain falls for 8.6 days. Throughout October, 1.14" (29mm) of precipitation is accumulated.

How many days does it snow in October in Rapid Valley?

In Rapid Valley, during October, snow falls for 2.6 days and regularly aggregates up to 1.5" (38mm) of snow.

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

The average day length in October is 10h and 59min.

When are sunrise and sunset in October in Rapid Valley?

On the first day of October in Rapid Valley, sunrise is at 6:51 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:43 pm MDT.

How many hours of sunshine does Rapid Valley have in October?

In Rapid Valley, the average sunshine duration in October is 7.3h.

What is the UV index intensity in October in Rapid Valley?

The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
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
Rapid Valley, SD

Average temperature in October - Rapid Valley, SD
  • Average high temperature in October: 56.5°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).

  • Average low temperature in October: 39.9°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

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Average pressure in October
Rapid Valley, SD

Average pressure in October - Rapid Valley, SD
  • Average pressure in October: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in October
Rapid Valley, SD

Average wind speed in October - Rapid Valley, SD
  • Average wind speed in October: 10.1mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).

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Average humidity in October
Rapid Valley, SD

Average humidity in October - Rapid Valley, SD
  • Average humidity in October: 58%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).

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Average rainfall in October
Rapid Valley, SD

Average rainfall in October - Rapid Valley, SD
  • Average rainfall in October: 1.14"

The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in October
Rapid Valley, SD

Average rainfall days in October - Rapid Valley, SD
  • Average rainfall days in October: 8.6 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).

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Average snowfall in October
Rapid Valley, SD

Average snowfall in October - Rapid Valley, SD
  • Average snowfall in October: 1.5"

The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in October
Rapid Valley, SD

Average snowfall days in October - Rapid Valley, SD
  • Average snowfall days in October: 2.6 days

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in October /
Average sunshine in October
Rapid Valley, SD

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in October: 7h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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Average sunshine days in October
Rapid Valley, SD

Average sunshine days in October - Rapid Valley, SD
  • Average sunshine days in October: 17.7 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).

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Average UV index in October
Rapid Valley, SD

Average UV index in October - Rapid Valley, SD
  • Average UV index in October: 3

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

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Average cloud cover in October
Rapid Valley, SD

Average cloud cover in October - Rapid Valley, SD
  • Average cloud cover in October: 26

The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in October
Rapid Valley, SD

Average visibility in October - Rapid Valley, 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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Rapid Valley, South Dakota, USA

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