October weather forecast
Herrick, SD

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Weather in October

October, the same as September, in Herrick, South Dakota, is a moderate autumn month, with an average temperature ranging between min 42.8°F (6°C) and max 59.2°F (15.1°C).

Temperature

As Herrick transitions into October, a marked decrease in the average high-temperature is observed, dropping from a warm 76.6°F (24.8°C) in September to a refreshing 59.2°F (15.1°C). Herrick records a mean low-temperature of 42.8°F (6°C) in October.

Humidity

In Herrick, the average relative humidity in October is 59%.

Rainfall

In Herrick, in October, it is raining for 8 days, with typically 1.3" (33mm) of accumulated precipitation. In Herrick, during the entire year, the rain falls for 103.9 days and collects up to 16.85" (428mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 1.6 snowfall days, it receives 0.63" (16mm) of snow. Throughout the year, there are 39.7 snowfall days, and 14.45" (367mm) of snow is accumulated.

Daylight

In October, the average length of the day is 11h and 1min.
On the first day of October, sunrise is at 7:34 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 6:29 pm CDT.

Sunshine

In Herrick, South Dakota, the average sunshine in October is 7h.

UV index

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 3 in October suggests the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.

Frequently asked questions

What are October temperatures?

During October, Herrick experiences an average high-temperature of 59.2°F (15.1°C) and a low-temperature of 42.8°F (6°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is evaluated at 89.6°F (32°C).

What is the average humidity in October?

The average relative humidity in October is 59%.

How much does it rain in October?

In Herrick, in October, it is raining for 8 days, with typically 1.3" (33mm) of accumulated precipitation.

When does it start snowing?

October is the first month it typically snows. Throughout October, in the average 1.6 snowfall days, it receives 0.63" (16mm) of snow.

How many hours of daylight does Herrick have in October?

The average day length in October is 11h and 1min.

When are sunrise and sunset in October?

On the first day of October, sunrise is at 7:34 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 6:29 pm CDT.

How many hours of sunshine does Herrick have in October?

The average sunshine duration in October in Herrick is 7h.

What is the UV index intensity in October?

The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium health risk 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
Herrick, SD

Average temperature in October - Herrick, SD
  • Average high temperature in October: 59.2°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in October: 42.8°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

Average pressure in October
Herrick, SD

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in October
Herrick, SD

Average wind speed in October - Herrick, SD
  • Average wind speed in October: 11.6mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).

Average humidity in October
Herrick, SD

Average humidity in October - Herrick, SD
  • Average humidity in October: 59%

The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).

Average rainfall in October
Herrick, SD

Average rainfall in October - Herrick, SD
  • Average rainfall in October: 1.3"

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in October
Herrick, SD

Average rainfall days in October - Herrick, SD
  • Average rainfall days in October: 8 days

The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).

Average snowfall in October
Herrick, SD

Average snowfall in October - Herrick, SD
  • Average snowfall in October: 0.63"

The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in October
Herrick, SD

Average snowfall days in October - Herrick, SD
  • Average snowfall days in October: 1.6 days

The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in October / Average sunshine in October - Herrick, 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: 7h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days in October
Herrick, SD

Average sunshine days in October - Herrick, SD
  • Average sunshine days in October: 20 days

The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).

Average UV index in October
Herrick, SD

Average UV index in October - Herrick, 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 December (UV index 1).

Average cloud cover in October
Herrick, SD

Average cloud cover in October - Herrick, SD
  • Average cloud cover in October: 29

The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).

Average visibility in October
Herrick, SD

Average visibility in October - Herrick, 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).

Herrick, South Dakota, USA

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