October weather forecast
Isabel, SD

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Weather in October

October, the same as September, in Isabel, South Dakota, is another mild autumn month, with an average temperature ranging between max 56.7°F (13.7°C) and min 41.2°F (5.1°C).

Temperature

October marks a distinct drop in the average high-temperature, descending from September's moderately hot 75.4°F (24.1°C) to a moderate 56.7°F (13.7°C). The nighttime temperature dips to a wintry 41.2°F (5.1°C) on average during October.

Humidity

The average relative humidity in October is 58%.

Rainfall

In Isabel, in October, it is raining for 7.4 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 99.7 rainfall days, and 16.06" (408mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 2.5 snowfall days, it receives 1.3" (33mm) of snow. In Isabel, during the entire year, snow falls for 58.3 days and aggregates up to 22.95" (583mm) of snow.

Daylight

In October, the average length of the day in Isabel is 10h and 56min.
On the first day of the month, sunrise is at 6:44 am and sunset at 6:25 pm. On the last day of October, in Isabel, sunrise is at 7:24 am and sunset at 5:33 pm MDT.

Sunshine

The average sunshine in October is 6.9h.

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 exposure to the Sun's UV rays for the average person.
Note: The UV index of 3 during October leads to these advisories:
Be vigilant - Preventing sunburn is recommended. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in October?

Isabel in October has an average high-temperature of 56.7°F (13.7°C) and an average low-temperature of 41.2°F (5.1°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is computed to be 86°F (30°C).

What is the average humidity in October in Isabel?

In October, the average relative humidity is 58%.

How much does it rain in October?

In Isabel, during October, the rain falls for 7.4 days and regularly aggregates up to 1.34" (34mm) of precipitation.

When does it start to snow?

October is the first month it typically snows. Throughout October, in the average 2.5 snowfall days, it receives 1.3" (33mm) of snow.

How many hours of daylight does Isabel have in October?

The average day length in October is 10h and 56min.

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 6:44 am and sunset at 6:25 pm. On the last day of the month, in Isabel, sunrise is at 7:24 am and sunset at 5:33 pm MDT.

How long on average sun shines in October?

In October, the average sunshine duration is 6.9h.

How high is the UV index in October?

The average daily maximum UV index in October is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Isabel, SD

Average temperature in October - Isabel, SD
  • Average high temperature in October: 56.7°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in October: 41.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).

Average pressure in October
Isabel, SD

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

The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in October
Isabel, SD

Average wind speed in October - Isabel, SD
  • Average wind speed in October: 12.1mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).

Average humidity in October
Isabel, SD

Average humidity in October - Isabel, SD
  • Average humidity in October: 58%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).

Average rainfall in October
Isabel, SD

Average rainfall in October - Isabel, SD
  • Average rainfall in October: 1.34"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in October
Isabel, SD

Average rainfall days in October - Isabel, SD
  • Average rainfall days in October: 7.4 days

The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).

Average snowfall in October
Isabel, SD

Average snowfall in October - Isabel, SD
  • Average snowfall in October: 1.3"

The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Isabel, SD

Average snowfall days in October - Isabel, SD
  • Average snowfall days in October: 2.5 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in October /
Average sunshine in October
Isabel, SD

Average daylight in October / Average sunshine in October - Isabel, SD
  • Average daylight in October: 10h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in October: 6h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

Average sunshine days in October
Isabel, SD

Average sunshine days in October - Isabel, SD
  • Average sunshine days in October: 19.9 days

The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).

Average UV index in October
Isabel, SD

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in October
Isabel, SD

Average cloud cover in October - Isabel, SD
  • Average cloud cover in October: 31

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).

Average visibility in October
Isabel, SD

Average visibility in October - Isabel, 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).

Isabel, South Dakota, USA

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