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
January
Weather in January
Temperature
As January unfolds, the average high-temperature reaches a still subzero cold 26.8°F (-2.9°C), hinting at a slight fluctuation from the previous month. In Ketchum, January's nights observe an average temperature dip to an extreme cold 8.4°F (-13.1°C).Humidity
The average relative humidity in January is 85%.Rainfall
In Ketchum, Idaho, in January, during 6.2 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Ketchum, during the entire year, the rain falls for 107.7 days and collects up to 15.63" (397mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Ketchum, in January, during 14.1 snowfall days, 12.72" (323mm) of snow is typically accumulated. Throughout the year, there are 88.2 snowfall days, and 69.45" (1764mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 23min.On the first day of January, sunrise is at 8:10 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 5:46 pm MST.
Sunshine
The month with the least sunshine in Ketchum is January, with an average of 5.7h of sunshine.UV index
The average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 2 in January transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Around midday, solar radiation is most harmful; hence, exposure should be limited. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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 in Ketchum?
How many days does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Ketchum have in January?
How high is the UV index in January?
Average temperature in January
Ketchum, ID
- Average high temperature in January: 26.8°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (25°F).
- Average low temperature in January: 8.4°F
The months with the highest average low temperature are July and August (50.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).
Average pressure in January
Ketchum, 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 (29.89"Hg).
Average wind speed in January
Ketchum, ID
- Average wind speed in January: 4.5mph
The windiest month (with the highest average wind speed) is July (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).
Average humidity in January
Ketchum, ID
- Average humidity in January: 85%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (37%).
Average rainfall in January
Ketchum, ID
- Average rainfall in January: 1.57"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in January
Ketchum, ID
- Average rainfall days in January: 6.2 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is July (5.9 days).
Average snowfall in January
Ketchum, ID
- Average snowfall in January: 12.72"
The month with the highest snowfall is February (15").
The months with the least snowfall are July and August (0").
Average snowfall days in January
Ketchum, ID
- Average snowfall days in January: 14.1 days
The month with the highest number of snowfall days is March (16 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Ketchum, 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: 5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in January
Ketchum, ID
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is April (11.1 days).
Average UV index in January
Ketchum, ID
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in January
Ketchum, 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 10).
Average visibility in January
Ketchum, 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).