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
As December transitions into January, the average high-temperature rests at a still subzero cold 30.6°F (-0.8°C), maintaining a close resemblance to the previous month. During the nights in January, an average low-temperature of 17.1°F (-8.3°C) is observed.Humidity
The months with the highest humidity in Deadwood are January and February, with an average relative humidity of 79%.Rainfall
The month with the least rainfall is January, when the rain falls for 3.7 days and typically collects 0.55" (14mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. In Deadwood, in January, snow falls for 11.7 days, with typically accumulated 2.87" (73mm) of snow. Throughout the year, in Deadwood, there are 66.6 snowfall days, and 34.53" (877mm) of snow is accumulated.Daylight
In January, the average length of the day in Deadwood is 9h and 19min.On the first day of the month, sunrise is at 7:30 am and sunset at 4:25 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:02 pm MST.
Sunshine
In January, the average sunshine is 6h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In January, the maximum UV index of 2 suggests these recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Deadwood in January?
What is the most humid month in Deadwood?
What is the average humidity in January in Deadwood?
What is the driest month in Deadwood?
How many days does it rain in January in Deadwood?
How much does it snow in Deadwood in January?
What is the average length of the day in January in Deadwood?
When is the sunrise / sunset in January in Deadwood?
How long on average sun shines in January in Deadwood?
When is the lowest UV index in Deadwood?
What is the UV index reading in January in Deadwood?
Average temperature in January
Deadwood, SD
- Average high temperature in January: 30.6°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in January: 17.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (15.4°F).
Average pressure in January
Deadwood, SD
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in January
Deadwood, SD
- Average wind speed in January: 9.8mph
The windiest month (with the highest average wind speed) is October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).
Average humidity in January
Deadwood, SD
- Average humidity in January: 79%
The months with the highest relative humidity are January and February (79%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in January
Deadwood, SD
- Average rainfall in January: 0.55"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in January
Deadwood, SD
- Average rainfall days in January: 3.7 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is November (2.7 days).
Average snowfall in January
Deadwood, SD
- Average snowfall in January: 2.87"
The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Deadwood, SD
- Average snowfall days in January: 11.7 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Deadwood, 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: 6h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in January
Deadwood, SD
- Average sunshine days in January: 17.8 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in January
Deadwood, SD
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Deadwood, SD
- Average cloud cover in January: 38
The months with the most cloud cover are February and April (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in January
Deadwood, 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).
Deadwood, South Dakota, USA
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