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's average high-temperature is a still subzero cold 26.1°F (-3.3°C), maintaining a close comparison with December's 24.3°F (-4.3°C). Swan Valley reports an average nighttime low-temperature of 7.3°F (-13.7°C) in January.Humidity
In January, the average relative humidity is 93%.Rainfall
In Swan Valley, Idaho, during January, the rain falls for 4.6 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, there are 127 rainfall days, and 24.29" (617mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In Swan Valley, during January, snow falls for 20.6 days and regularly aggregates up to 22.09" (561mm) of snow. Throughout the year, there are 126.6 snowfall days, and 110.28" (2801mm) of snow is accumulated.Daylight
In January, the average length of the day in Swan Valley is 9h and 24min.On the first day of January, sunrise is at 7:58 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:35 pm MST.
Sunshine
The average sunshine in January is 4.1h.UV index
The months with the lowest UV index in Swan Valley are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 1 in January leads to these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the average humidity in January?
How much does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Swan Valley have in January?
What is the month with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Swan Valley, ID
- Average high temperature in January: 26.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (24.3°F).
- Average low temperature in January: 7.3°F
The months with the highest average low temperature are July and August (45.3°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).
Average pressure in January
Swan Valley, ID
- Average pressure in January: 30.28"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Swan Valley, ID
- Average wind speed in January: 4.3mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in January
Swan Valley, ID
- Average humidity in January: 93%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (46%).
Average rainfall in January
Swan Valley, ID
- Average rainfall in January: 2.64"
The wettest month (with the highest rainfall) is February (2.91").
The driest month (with the least rainfall) is July (0.91").
Average rainfall days in January
Swan Valley, ID
- Average rainfall days in January: 4.6 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in January
Swan Valley, ID
- Average snowfall in January: 22.09"
The month with the highest snowfall is February (22.91").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Swan Valley, ID
- Average snowfall days in January: 20.6 days
The months with the highest number of snowfall days are February and December (22.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Swan Valley, ID
- 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: 4h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in January
Swan Valley, ID
- Average sunshine days in January: 10.4 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (5.3 days).
Average UV index in January
Swan Valley, ID
- Average UV index in January: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in January
Swan Valley, ID
- Average cloud cover in January: 61
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in January
Swan Valley, ID
- Average visibility in January: 3mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (3mi).
Swan Valley, Idaho, USA
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