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
January brings the lowest temperatures, with an average high of 27°F (-2.8°C) and an average low of 13.6°F (-10.2°C).Humidity
The most humid month is January, with an average relative humidity of 83%.Rainfall
The month with the least rainfall in Opal, South Dakota, is January, when the rain falls for 3.3 days and typically collects 0.51" (13mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Opal, in January, snow falls for 12.3 days, with typically accumulated 3.07" (78mm) of snow. In Opal, during the entire year, snow falls for 58.3 days and aggregates up to 22.95" (583mm) of snow.Daylight
In Opal, the average length of the day in January is 9h and 15min.On the first day of the month, sunrise is at 7:27 am and sunset at 4:18 pm. On the last day of January, sunrise is at 7:10 am and sunset at 4:55 pm MST.
Sunshine
With an average of 4.8h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 2 during January translates into these guidelines:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Opal?
How cold is it in Opal in January?
What is the most humid month in Opal?
What is the average humidity in January in Opal?
What is the driest month in Opal?
How much does it rain in Opal in January?
How many days does it snow in January in Opal?
How many hours of daylight does Opal have in January?
What time are sunrise and sunset in January in Opal?
What is the month with the least sunshine in Opal?
How long on average sun shines in January in Opal?
What is the month with the lowest UV index in Opal?
How high is the UV index in January in Opal?
Average temperature in January
Opal, SD
- Average high temperature in January: 27°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in January: 13.6°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in January
Opal, SD
- Average pressure in January: 30.15"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in January
Opal, SD
- Average wind speed in January: 11.3mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).
Average humidity in January
Opal, SD
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).
Average rainfall in January
Opal, SD
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in January
Opal, SD
- Average rainfall days in January: 3.3 days
The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).
Average snowfall in January
Opal, SD
- Average snowfall in January: 3.07"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Opal, SD
- Average snowfall days in January: 12.3 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Opal, 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 5min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Opal, SD
- Average sunshine days in January: 16.4 days
The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in January
Opal, SD
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Opal, SD
- Average cloud cover in January: 50
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in January
Opal, 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).
Opal, South Dakota, USA
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