January weather forecastTwin Falls, ID
January
Weather in January
January in Twin Falls, Idaho, begins the year with chilly weather conditions. A layer of snow covers the landscape with 5.04" (128mm) of snowfall on average; a significant decrease in temperature marks the start of winter. Compared to December, the cold is more pronounced with the temperature hitting a high of only 34.9°F (1.6°C) and a low of 24.1°F (-4.4°C). As the days advance, residents bundle up in their warmest clothes, and heaters run full blast inside homes and offices. Outdoor activities are limited, and everyone anticipates the arrival of warmer weather.Temperature
An average high-temperature of a still wintry 34.9°F (1.6°C) marks January, exhibiting a close resemblance to the conditions in December. During January, the nighttime temperature averages of 24.1°F (-4.4°C).Humidity
The most humid month is January, with an average relative humidity of 78%.Rainfall
In Twin Falls, in January, during 7.8 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 91.4 rainfall days, and 9.29" (236mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall in Twin Falls is January, when snow falls for 8.9 days and typically aggregates up to 5.04" (128mm) of snow.Daylight
In Twin Falls, Idaho, the average length of the day in January is 9h and 29min.On the first day of January, sunrise is at 8:07 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:49 pm MST.
Sunshine
The average sunshine in January in Twin Falls is 5.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during January translates into the following guidance:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Twin Falls, ID
- Average high temperature in January: 34.9°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (34°F).
- Average low temperature in January: 24.1°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in January
Twin Falls, 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 (29.87"Hg).
Average wind speed in January
Twin Falls, ID
- Average wind speed in January: 7.4mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in January
Twin Falls, ID
- Average humidity in January: 78%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is July (28%).
Average rainfall in January
Twin Falls, ID
- Average rainfall in January: 1.22"
The wettest month (with the highest rainfall) is December (1.3").
The driest months (with the least rainfall) are July and August (0.24").
Average rainfall days in January
Twin Falls, ID
- Average rainfall days in January: 7.8 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (4.4 days).
Average snowfall in January
Twin Falls, ID
- Average snowfall in January: 5.04"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Twin Falls, ID
- Average snowfall days in January: 8.9 days
The month with the highest number of snowfall days is December (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Twin Falls, ID
- Average daylight in January: 9h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 5h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Twin Falls, ID
- Average sunshine days in January: 18.7 days
The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is March (14.7 days).
Average UV index in January
Twin Falls, ID
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Twin Falls, ID
- Average cloud cover in January: 37
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in January
Twin Falls, ID
- 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).
