Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
In Harrison, the onset of October is marked by a decreased average high-temperature, declining from September's warm 76.3°F (24.6°C) to a mild 59.7°F (15.4°C). Harrison, during October nights, observes an average temperature of 42.4°F (5.8°C).Humidity
The least humid month in Harrison is October, with an average relative humidity of 62%.Rainfall
In October, the rain falls for 7.7 days. Throughout October, 1.02" (26mm) of precipitation is accumulated. In Harrison, South Dakota, during the entire year, the rain falls for 104.1 days and collects up to 14.29" (363mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. October is the first month it typically snows in Harrison. Throughout October, in the average 0.8 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Harrison, there are 32.8 snowfall days, and 8.35" (212mm) of snow is accumulated.Daylight
The average length of the day in October in Harrison is 11h and 1min.On the first day of October in Harrison, sunrise is at 7:32 am and sunset at 7:14 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 6:26 pm CDT.
Sunshine
In October, the average sunshine is 6.6h.UV index
In October, the average daily maximum UV index in Harrison, South Dakota, is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In October, an average UV index of 3 transforms into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What is the temperature in October in Harrison?
What is the least humid month in Harrison?
What is the average humidity in October in Harrison?
How many days does it rain in October in Harrison?
When does it start snowing in Harrison?
How many hours of daylight does Harrison have in October?
What time are sunrise and sunset in October in Harrison?
How many hours of sunshine does Harrison have in October?
What is the UV index reading in October in Harrison?
Average temperature in October
Harrison, SD
- Average high temperature in October: 59.7°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in October: 42.4°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in October
Harrison, 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 (29.85"Hg).
Average wind speed in October
Harrison, SD
- Average wind speed in October: 10.3mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).
Average humidity in October
Harrison, SD
- Average humidity in October: 62%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (62%).
Average rainfall in October
Harrison, SD
- Average rainfall in October: 1.02"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is February (0.31").
Average rainfall days in October
Harrison, SD
- Average rainfall days in October: 7.7 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in October
Harrison, SD
- Average snowfall in October: 0.08"
The months with the highest snowfall are January and March (1.93").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Harrison, SD
- Average snowfall days in October: 0.8 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Harrison, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in October
Harrison, SD
- Average sunshine days in October: 20.7 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in October
Harrison, SD
- Average UV index in October: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in October
Harrison, SD
- Average cloud cover in October: 30
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in October
Harrison, 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).
Harrison, South Dakota, USA
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