October weather forecastHarrisburg, SD
October
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
As Harrisburg steps into October, a marked temperature drop is observed, with the average high-temperature reducing from September's moderately hot 74.5°F (23.6°C) to a moderate 58.1°F (14.5°C). Throughout October, an average nighttime temperature of 41.9°F (5.5°C) is experienced.Humidity
With an average relative humidity of 66%, October is the least humid month.Rainfall
In Harrisburg, during October, the rain falls for 8.9 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, 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. Throughout October, in the average 1.3 snowfall days, it receives 0.47" (12mm) of snow. In Harrisburg, during the entire year, snow falls for 40.5 days and aggregates up to 16.77" (426mm) of snow.Daylight
In October, the average length of the day 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
The average sunshine in October is 6h.UV index
The average daily maximum UV index in October is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high daily UV index of 3 during October translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
