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
During January, North Spearfish records an average high-temperature of a still subzero cold 31.5°F (-0.3°C), marking a slight divergence from December's 30.9°F (-0.6°C). During January, North Spearfish sees a mean low-temperature of 18.5°F (-7.5°C).Humidity
The most humid month is January, with an average relative humidity of 79%.Rainfall
January is the month with the least rainfall. Rain falls for 3 days and accumulates 0.59" (15mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In North Spearfish, in January, during 9.7 snowfall days, 3.31" (84mm) of snow is typically accumulated. In North Spearfish, South Dakota, during the entire year, snow falls for 56.8 days and aggregates up to 36.3" (922mm) of snow.Daylight
In January, the average length of the day is 9h and 17min.On the first day of January, sunrise is at 7:31 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:02 pm MST.
Sunshine
The average sunshine in January in North Spearfish is 5.8h.UV index
The months with the lowest UV index are January, February, April, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 2 in January translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the most humid month?
What is the average humidity in January?
What is the driest month?
How much does it rain in January?
How many days does it snow in January?
How many hours of daylight does North Spearfish have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does North Spearfish have in January?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
North Spearfish, SD
- Average high temperature in January: 31.5°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (30.9°F).
- Average low temperature in January: 18.5°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in January
North Spearfish, 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
North Spearfish, SD
- Average wind speed in January: 10.2mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (8mph).
Average humidity in January
North Spearfish, SD
- Average humidity in January: 79%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (49%).
Average rainfall in January
North Spearfish, SD
- Average rainfall in January: 0.59"
The wettest month (with the highest rainfall) is May (2.32").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in January
North Spearfish, SD
- Average rainfall days in January: 3 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in January
North Spearfish, SD
- Average snowfall in January: 3.31"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
North Spearfish, SD
- Average snowfall days in January: 9.7 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
North Spearfish, 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 5min
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 42min).
Average sunshine days in January
North Spearfish, SD
- Average sunshine days in January: 18.3 days
The month with the most sunshine days is November (20.3 days).
The month with the least sunshine days is May (12.7 days).
Average UV index in January
North Spearfish, 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, April, November and December (UV index 2).
Average cloud cover in January
North Spearfish, SD
- Average cloud cover in January: 40
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in January
North Spearfish, 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).
North Spearfish, South Dakota, USA
Weather forecast for your location
2. Allow the app to use your location