October weather forecast
Harrisburg, SD

Share

Weather in October

October is characterized by cooling temperatures and richly hued foliage across Harrisburg. As brisk autumn firmly sets in, the daylight hours shorten considerably while the outdoor ambiance turns crisp. Remarkably, this is the month where wind speeds pick up again, registering at 10.3mph (16.6km/h), offering a refreshing treat for those indulging in outdoor pursuits.

Temperature

With the onset of October, Harrisburg experiences a noticeable temperature shift, with the average high-temperature receding from a moderately hot 74.5°F (23.6°C) in September to a moderate 58.1°F (14.5°C). The nighttime temperature in Harrisburg, South Dakota, dips to an icy 41.9°F (5.5°C) on average during October.

Humidity

With an average relative humidity of 66%, October is the least humid month.

Rainfall

In Harrisburg, in October, it is raining for 8.9 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, in Harrisburg, there are 119.2 rainfall days, and 21.73" (552mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. October is the first month it typically snows in Harrisburg, South Dakota. Throughout October, in the average 1.3 snowfall days, it receives 0.47" (12mm) of snow. Throughout the year, there are 40.5 snowfall days, and 16.77" (426mm) of snow is accumulated.

Daylight

The average length of the day in October in Harrisburg is 11h and 1min.
On the first day of October, sunrise is at 7:25 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 6:18 pm CDT.

Sunshine

In Harrisburg, the average sunshine in October is 6h.

UV index

In October, the average daily maximum UV index in Harrisburg is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: A maximum high UV index of 3 in October translates into the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
[Resources]

Frequently asked questions

What is the average October temperature in Harrisburg?

The average high-temperature and low-temperature in Harrisburg during October are 58.1°F (14.5°C) and 41.9°F (5.5°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 86°F (30°C).

What is the least humid month in Harrisburg?

With an average relative humidity of 66%, October is the least humid month.

What is the average humidity in October in Harrisburg?

The average relative humidity in October in Harrisburg, South Dakota, is 66%.

How many days does it rain in October in Harrisburg?

In Harrisburg, in October, during 8.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

When does it start snowing in Harrisburg?

October is the first month it typically snows in Harrisburg, South Dakota. Throughout October, in the average 1.3 snowfall days, it receives 0.47" (12mm) of snow.

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

In October, the average day length in Harrisburg, South Dakota, is 11h and 1min.

What time are sunrise and sunset in October in Harrisburg?

In October, on the first day of the month, sunrise is at 7:25 am and sunset at 7:07 pm. On the last day of the month, in Harrisburg, sunrise is at 8:01 am and sunset at 6:18 pm CDT.

How long on average sun shines in October in Harrisburg?

The average sunshine duration in October is 6h.

What is the UV index reading in October in Harrisburg?

The average daily maximum UV index in October in Harrisburg is 3. A UV Index reading of 3 to 5 represents a moderate health threat 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
Harrisburg, SD

Average temperature in October - Harrisburg, SD
  • Average high temperature in October: 58.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (24.1°F).

  • Average low temperature in October: 41.9°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

[Resources]

Average pressure in October
Harrisburg, SD

Average pressure in October - Harrisburg, 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 (29.86"Hg).

[Resources]

Average wind speed in October
Harrisburg, SD

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

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

[Resources]

Average humidity in October
Harrisburg, SD

Average humidity in October - Harrisburg, SD
  • Average humidity in October: 66%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (66%).

[Resources]

Average rainfall in October
Harrisburg, SD

Average rainfall in October - Harrisburg, SD
  • Average rainfall in October: 1.89"

The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January, February and November (0.67").

[Resources]

Average rainfall days in October
Harrisburg, SD

Average rainfall days in October - Harrisburg, SD
  • Average rainfall days in October: 8.9 days

The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is January (3.3 days).

[Resources]

Average snowfall in October
Harrisburg, SD

Average snowfall in October - Harrisburg, SD
  • Average snowfall in October: 0.47"

The month with the highest snowfall is February (3.54").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in October
Harrisburg, SD

Average snowfall days in October - Harrisburg, SD
  • Average snowfall days in October: 1.3 days

The month with the highest number of snowfall days is December (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

Average daylight in October / Average sunshine in October - Harrisburg, 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: 9h and 0min).

  • Average sunshine in October: 6h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

[Resources]

Average sunshine days in October
Harrisburg, SD

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

The month with the most sunshine days is November (21 days).
The month with the least sunshine days is June (10.2 days).

[Resources]

Average UV index in October
Harrisburg, SD

Average UV index in October - Harrisburg, 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).

[Resources]

Average cloud cover in October
Harrisburg, SD

Average cloud cover in October - Harrisburg, SD
  • Average cloud cover in October: 34

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 26).

[Resources]

Average visibility in October
Harrisburg, SD

Average visibility in October - Harrisburg, 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).

[Resources]

Harrisburg, South Dakota, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location