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
The advent of January reveals an average high-temperature of a still cold 32.5°F (0.3°C), showing minimal difference from the prior month. During January, the average low-temperature is a subzero cold 18.1°F (-7.7°C).Humidity
January is the most humid month, with an average relative humidity of 80%.Rainfall
January is the month with the least rainfall. Rain falls for 3.5 days and accumulates 0.55" (14mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Rockyford. In January, it is snowing for 10.2 days. Throughout January, 2.87" (73mm) of snow is accumulated. Throughout the year, in Rockyford, South Dakota, there are 47.4 snowfall days, and 22.72" (577mm) of snow is accumulated.Daylight
The average length of the day in January in Rockyford is 9h and 23min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:24 pm. On the last day of January, in Rockyford, sunrise is at 7:07 am and sunset at 4:59 pm MST.
Sunshine
The average sunshine in January in Rockyford is 5.6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rockyford. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In January, a daily UV index of 2 turns into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is it in Rockyford in January?
What is the most humid month in Rockyford?
What is the average humidity in January in Rockyford?
What is the driest month in Rockyford?
How many days does it rain in January in Rockyford?
How many days does it snow in January in Rockyford?
What is the average length of the day in January in Rockyford?
When is the sunrise / sunset in January in Rockyford?
How many hours of sunshine does Rockyford have in January?
What are the months with the lowest UV index in Rockyford?
What is the UV index intensity in January in Rockyford?
Average temperature in January
Rockyford, SD
- Average high temperature in January: 32.5°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (32.4°F).
- Average low temperature in January: 18.1°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in January
Rockyford, SD
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in January
Rockyford, SD
- Average wind speed in January: 10.7mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (10.2mph).
Average humidity in January
Rockyford, SD
- Average humidity in January: 80%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (48%).
Average rainfall in January
Rockyford, SD
- Average rainfall in January: 0.55"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in January
Rockyford, SD
- Average rainfall days in January: 3.5 days
The month with the highest number of rainy days is May (13.1 days).
The months with the least rainy days are February and December (2.5 days).
Average snowfall in January
Rockyford, SD
- Average snowfall in January: 2.87"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Rockyford, SD
- Average snowfall days in January: 10.2 days
The month with the highest number of snowfall days is February (11.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Rockyford, SD
- Average daylight in January: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in January
Rockyford, SD
- Average sunshine days in January: 18.6 days
The month with the most sunshine days is September (22.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in January
Rockyford, 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
Rockyford, SD
- Average cloud cover in January: 42
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in January
Rockyford, 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).
Rockyford, South Dakota, USA
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