Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
With average temperatures fluctuating between a high of 23.2°F (-4.9°C) and a low of 8.2°F (-13.2°C), January stands out as the coldest month.Humidity
With an average relative humidity of 88%, January is the most humid month in Iroquois.Rainfall
The month with the least rainfall is January, when the rain falls for 2.7 days and typically collects 0.55" (14mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Iroquois, during January, snow falls for 9.2 days and regularly aggregates up to 3.11" (79mm) of snow. Throughout the year, there are 42.3 snowfall days, and 16.54" (420mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 19min.On the first day of the month, sunrise is at 8:07 am and sunset at 5:02 pm. On the last day of January, sunrise is at 7:50 am and sunset at 5:38 pm CST.
Sunshine
With an average of 4.2h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January and November, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 during January translates into the following directions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest in Iroquois?
How cold is January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How much does it rain in January?
How much does it snow in January?
How many hours of daylight does Iroquois have in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January in Iroquois?
What are the months with the lowest UV index in Iroquois?
What is the UV index reading in January?
Average temperature in January
Iroquois, SD
- Average high temperature in January: 23.2°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 January: 8.2°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 January
Iroquois, SD
- Average pressure in January: 30.16"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 January
Iroquois, SD
- Average wind speed in January: 9.9mph
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 January
Iroquois, SD
- Average humidity in January: 88%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (62%).
Average rainfall in January
Iroquois, SD
- Average rainfall in January: 0.55"
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 January
Iroquois, SD
- Average rainfall days in January: 2.7 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 January
Iroquois, SD
- Average snowfall in January: 3.11"
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 January
Iroquois, SD
- Average snowfall days in January: 9.2 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 January /
Average sunshine in January
Iroquois, SD
- Average daylight in January: 9h and 2min
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 January: 4h and 1min
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 January
Iroquois, SD
- Average sunshine days in January: 19.8 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 January
Iroquois, SD
- Average UV index in January: 1
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 January
Iroquois, SD
- Average cloud cover in January: 54
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 January
Iroquois, SD
- Average visibility in January: 5mi
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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