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
Iona's transition into October is marked by a distinct drop in the average high-temperature, reducing from a warm 76.3°F (24.6°C) in September to a mild 58.6°F (14.8°C). In Iona, October's nights observe an average temperature dip to a cold 42.4°F (5.8°C).Humidity
In Iona, South Dakota, the average relative humidity in October is 62%.Rainfall
In Iona, South Dakota, during October, the rain falls for 7.8 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Iona, there are 107.6 rainfall days, and 17.83" (453mm) of precipitation is accumulated.Snowfall
Months with snowfall in Iona are January through April, October through December. October is the first month it typically snows in Iona, South Dakota. Throughout October, in the average 1.6 snowfall days, it receives 0.59" (15mm) of snow. In Iona, South Dakota, during the entire year, snow falls for 50.9 days and aggregates up to 17.87" (454mm) of snow.Daylight
The average length of the day in October is 11h and 0min.On the first day of October in Iona, South Dakota, sunrise is at 7:36 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 6:29 pm CDT.
Sunshine
In Iona, the average sunshine in October is 6.8h.UV index
In October, the average daily maximum UV index in Iona, South Dakota, is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 3 in October translates into this advice:
Adopt protective measures - It is advised to guard against sun damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
What are the temperatures in Iona in October?
What is the average humidity in October in Iona?
How much does it rain in Iona in October?
When does it start to snow in Iona?
How many hours of daylight does Iona have in October?
When is the sunrise / sunset in October in Iona?
How long on average sun shines in October in Iona?
How high is the UV index in October in Iona?
Average temperature in October
Iona, SD
- Average high temperature in October: 58.6°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in October: 42.4°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in October
Iona, 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
Iona, SD
- Average wind speed in October: 10.7mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).
Average humidity in October
Iona, SD
- Average humidity in October: 62%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is September (58%).
Average rainfall in October
Iona, SD
- Average rainfall in October: 1.14"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is November (0.55").
Average rainfall days in October
Iona, SD
- Average rainfall days in October: 7.8 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in October
Iona, SD
- Average snowfall in October: 0.59"
The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Iona, SD
- Average snowfall days in October: 1.6 days
The months with the highest number of snowfall days are January and February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Iona, 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 5min
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 42min).
Average sunshine days in October
Iona, SD
- Average sunshine days in October: 19.9 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is April (11.8 days).
Average UV index in October
Iona, 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 February (UV index 1).
Average cloud cover in October
Iona, 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 August (Cloud cover 20).
Average visibility in October
Iona, SD
- Average visibility in October: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Iona, South Dakota, USA
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