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 begins with an average high-temperature of a still freezing cold 28.4°F (-2°C), reflecting close similarity to the preceding month. During January, the average low-temperature in Challis is an extreme cold 8.1°F (-13.3°C).Humidity
The average relative humidity in January is 86%.Rainfall
In Challis, in January, it is raining for 3.8 days, with typically 0.47" (12mm) of accumulated precipitation. In Challis, during the entire year, the rain falls for 75.7 days and collects up to 6.38" (162mm) of precipitation.Snowfall
Months with snowfall in Challis are January through June, September through December. In Challis, in January, during 9 snowfall days, 3.23" (82mm) of snow is typically accumulated. In Challis, during the entire year, snow falls for 51.7 days and aggregates up to 18.62" (473mm) of snow.Daylight
In January, the average length of the day is 9h and 17min.On the first day of the month, sunrise is at 8:13 am and sunset at 5:07 pm. On the last day of January, sunrise is at 7:56 am and sunset at 5:44 pm MST.
Sunshine
The month with the least sunshine is January, with an average of 5.8h of sunshine.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 2 suggests this advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in Challis in January?
How many hours of daylight does Challis have in January?
When are sunrise and sunset in January in Challis?
What is the month with the least sunshine?
How long on average sun shines in January?
When is the lowest UV index in Challis?
What is the UV index reading in January in Challis?
Average temperature in January
Challis, ID
- Average high temperature in January: 28.4°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (26.1°F).
- Average low temperature in January: 8.1°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure in January
Challis, ID
- Average pressure in January: 30.27"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Challis, ID
- Average wind speed in January: 4.8mph
The windiest months (with the highest average wind speed) are June and July (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in January
Challis, ID
- Average humidity in January: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in January
Challis, ID
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is June (1.1").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in January
Challis, ID
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is June (10.2 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in January
Challis, ID
- Average snowfall in January: 3.23"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Challis, ID
- Average snowfall days in January: 9 days
The month with the highest number of snowfall days is December (10.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Challis, ID
- 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 July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in January
Challis, ID
- Average sunshine days in January: 21.1 days
The month with the most sunshine days is July (24.1 days).
The months with the least sunshine days are March and April (17.2 days).
Average UV index in January
Challis, ID
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in January
Challis, ID
- Average cloud cover in January: 40
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in January
Challis, 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 and February (4mi).
Challis, Idaho, USA
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