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 high temperatures of 29.8°F (-1.2°C) and lows of 16.7°F (-8.5°C), January is the coldest month.Humidity
January is the most humid month, with an average relative humidity of 81%.Rainfall
The month with the least rainfall is January, when the rain falls for 2.8 days and typically collects 0.39" (10mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Hayes, in January, snow falls for 8.4 days, with typically accumulated 2.09" (53mm) of snow. In Hayes, during the entire year, snow falls for 38.8 days and aggregates up to 16.1" (409mm) of snow.Daylight
The average length of the day in January is 9h and 19min.On the first day of the month, sunrise is at 7:19 am and sunset at 4:15 pm. On the last day of January, sunrise is at 7:03 am and sunset at 4:51 pm MST.
Sunshine
The months with the least sunshine are January and February, with an average of 5.2h of sunshine.UV index
In Hayes, South Dakota, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In January, the maximum UV index of 2 translates into these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How many days does it snow in January?
How many hours of daylight does Hayes have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Hayes have in January?
How high is the UV index in January?
Average temperature in January
Hayes, SD
- Average high temperature in January: 29.8°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in January: 16.7°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in January
Hayes, SD
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in January
Hayes, SD
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).
Average humidity in January
Hayes, SD
- Average humidity in January: 81%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).
Average rainfall in January
Hayes, SD
- Average rainfall in January: 0.39"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in January
Hayes, SD
- Average rainfall days in January: 2.8 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in January
Hayes, SD
- Average snowfall in January: 2.09"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Hayes, SD
- Average snowfall days in January: 8.4 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Hayes, 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: 5h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in January
Hayes, SD
- Average sunshine days in January: 20.6 days
The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).
Average UV index in January
Hayes, SD
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Hayes, SD
- Average cloud cover in January: 46
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in January
Hayes, SD
- Average visibility in January: 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).
Hayes, South Dakota, USA
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