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
As October begins, there is a noticeable decrease in the average high-temperature, falling from a moderately hot 75.7°F (24.3°C) in September to a mild 57.9°F (14.4°C). Iroquois's October nights cool down to an average low-temperature of 41.5°F (5.3°C).Humidity
In Iroquois, the average relative humidity in October is 63%.Rainfall
In October, the rain falls for 8.1 days. Throughout October, 1.57" (40mm) of precipitation is accumulated. In Iroquois, during the entire year, the rain falls for 101.8 days and collects up to 18.19" (462mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 1.4 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, there are 42.3 snowfall days, and 16.54" (420mm) of snow is accumulated.Daylight
In Iroquois, the average length of the day in October is 10h and 58min.On the first day of October, sunrise is at 7:30 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 8:08 am and sunset at 6:21 pm CDT.
Sunshine
The average sunshine in October is 6.5h.UV index
The average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in October converts into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in October?
What is the average humidity in October?
How many days does it rain in October?
When does it start snowing?
How many hours of daylight does Iroquois have in October?
When is the sunrise / sunset in October?
How long on average sun shines in October?
What is the UV index reading in October in Iroquois?
Average temperature in October
Iroquois, SD
- Average high temperature in October: 57.9°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in October: 41.5°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in October
Iroquois, SD
- Average pressure in October: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in October
Iroquois, SD
- Average wind speed in October: 10.6mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).
Average humidity in October
Iroquois, SD
- Average humidity in October: 63%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (62%).
Average rainfall in October
Iroquois, SD
- Average rainfall in October: 1.57"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in October
Iroquois, SD
- Average rainfall days in October: 8.1 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (1.8 days).
Average snowfall in October
Iroquois, SD
- Average snowfall in October: 0.51"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
Iroquois, SD
- Average snowfall days in October: 1.4 days
The month with the highest number of snowfall days is December (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Iroquois, SD
- Average daylight in October: 11h and 0min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in October: 6h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in October
Iroquois, SD
- Average sunshine days in October: 20.3 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in October
Iroquois, SD
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in October
Iroquois, SD
- Average cloud cover in October: 32
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 22).
Average visibility in October
Iroquois, 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).
Iroquois, South Dakota, USA
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