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, known for its average high temperature of 25.5°F (-3.6°C) and an average low temperature of 12°F (-11.1°C), is the coldest month.Humidity
January is the most humid month in Ralph, with an average relative humidity of 84%.Rainfall
January and November are months with the least rain when the rain falls for 4.2 days and typically aggregates up to 0.51" (13mm) of rain.Snowfall
Months with snowfall are January through June, October through December. In Ralph, South Dakota, in January, during 12.1 snowfall days, 3.03" (77mm) of snow is typically accumulated. In Ralph, during the entire year, snow falls for 67.2 days and aggregates up to 24.69" (627mm) of snow.Daylight
In Ralph, the average length of the day in January is 9h and 10min.On the first day of the month, sunrise is at 7:33 am and sunset at 4:18 pm. On the last day of January, sunrise is at 7:15 am and sunset at 4:56 pm MST.
Sunshine
The average sunshine in January in Ralph is 4.7h.UV index
The average daily maximum UV index in January in Ralph is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The UV index of 2 during January translates into the following guidance:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What month is the coldest in Ralph?
How cold is it in Ralph in January?
What is the most humid month in Ralph?
What is the average humidity in January in Ralph?
What is the driest month in Ralph?
How many days does it rain in January in Ralph?
How much does it snow in Ralph in January?
How many hours of daylight does Ralph have in January?
What time are sunrise and sunset in January in Ralph?
How long on average sun shines in January in Ralph?
What is the UV index intensity in January in Ralph?
Average temperature in January
Ralph, SD
- Average high temperature in January: 25.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in January: 12°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in January
Ralph, SD
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in January
Ralph, SD
- Average wind speed in January: 11.7mph
The windiest months (with the highest average wind speed) are January and October (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).
Average humidity in January
Ralph, SD
- Average humidity in January: 84%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (50%).
Average rainfall in January
Ralph, SD
- Average rainfall in January: 0.51"
The wettest month (with the highest rainfall) is May (2.48").
The driest months (with the least rainfall) are January and November (0.51").
Average rainfall days in January
Ralph, SD
- Average rainfall days in January: 4.2 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is November (3 days).
Average snowfall in January
Ralph, SD
- Average snowfall in January: 3.03"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are July, August and September (0").
Average snowfall days in January
Ralph, SD
- Average snowfall days in January: 12.1 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Ralph, SD
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January: 4h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in January
Ralph, SD
- Average sunshine days in January: 16.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is April (11.8 days).
Average UV index in January
Ralph, SD
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in January
Ralph, SD
- Average cloud cover in January: 52
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in January
Ralph, 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).
Ralph, South Dakota, USA
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