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 transition from December to January sees average high-temperatures adjusting to a still subzero cold 29.1°F (-1.6°C), from a not significantly different 28.8°F (-1.8°C). Swanlake throughout January, experiences an average nighttime temperature of 13.5°F (-10.3°C).Humidity
January is the most humid month, with an average relative humidity of 90%.Rainfall
In Swanlake, during January, the rain falls for 8.9 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Swanlake, Idaho, during the entire year, the rain falls for 127.4 days and collects up to 18.27" (464mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. January is the month with the most snowfall. Snow falls for 17.6 days and accumulates 16.73" (425mm) of snow.Daylight
The average length of the day in January is 9h and 31min.On the first day of the month, sunrise is at 7:56 am and sunset at 5:06 pm. On the last day of January, sunrise is at 7:42 am and sunset at 5:40 pm MST.
Sunshine
The month with the least sunshine is January, with an average of 4.8h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In January, the maximum UV index of 1 suggests this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Swanlake, ID
- Average high temperature in January: 29.1°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (28.8°F).
- Average low temperature in January: 13.5°F
The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in January
Swanlake, ID
- Average pressure in January: 30.3"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Swanlake, ID
- Average wind speed in January: 4.2mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in January
Swanlake, ID
- Average humidity in January: 90%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).
Average rainfall in January
Swanlake, ID
- Average rainfall in January: 2.2"
The wettest month (with the highest rainfall) is February (2.24").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Swanlake, ID
- Average rainfall days in January: 8.9 days
The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is July (5.5 days).
Average snowfall in January
Swanlake, ID
- Average snowfall in January: 16.73"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Swanlake, ID
- Average snowfall days in January: 17.6 days
The months with the highest number of snowfall days are January and February (17.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Swanlake, ID
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 4h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Swanlake, ID
- Average sunshine days in January: 12.6 days
The month with the most sunshine days is July (21.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in January
Swanlake, ID
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Swanlake, ID
- Average cloud cover in January: 48
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in January
Swanlake, ID
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Swanlake, Idaho, USA
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