January weather forecastIdaho Falls, ID
January
Weather in January
The characteristically frigid air of Idaho Falls in January seems to hold the city in a deep freeze. Residents routinely awaken to brisk temperatures that can plunge to a biting 14.2°F (-9.9°C), making it the coldest month of the year. This cold snap is mirrored in the high humidity levels that settle over the region and the fewest daylight hours. The city paints a frosty picture with its frequent snow showers; indeed, this month is the peak time for snowfall. Preparedness for wintry conditions becomes indispensable for navigating January's weather.Temperature
January's presence marks an average high-temperature of a still freezing cold 28°F (-2.2°C), subtly varied from December's 27.9°F (-2.3°C). In Idaho Falls, the January nights cool down to an average low of 14.2°F (-9.9°C).Humidity
January is the most humid month, with an average relative humidity of 90%.Rainfall
In Idaho Falls, in January, during 3.7 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 84.3 rainfall days, and 6.97" (177mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. January is the month with the most snowfall in Idaho Falls. Snow falls for 12.8 days and accumulates 3.86" (98mm) of snow.Daylight
The average length of the day in January in Idaho Falls is 9h and 24min.On the first day of January in Idaho Falls, sunrise is at 8:00 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:37 pm MST.
Sunshine
The month with the least sunshine in Idaho Falls is January, with an average of 4.7h of sunshine.UV index
The months with the lowest UV index in Idaho Falls are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 2 in January leads to these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Idaho Falls, ID
- Average high temperature in January: 28°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in January: 14.2°F
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in January
Idaho Falls, 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 (29.91"Hg).
Average wind speed in January
Idaho Falls, ID
- Average wind speed in January: 5.8mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity in January
Idaho Falls, 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 (35%).
Average rainfall in January
Idaho Falls, ID
- Average rainfall in January: 0.51"
The wettest months (with the highest rainfall) are May and September (0.83").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in January
Idaho Falls, ID
- Average rainfall days in January: 3.7 days
The month with the highest number of rainy days is May (10.7 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in January
Idaho Falls, ID
- Average snowfall in January: 3.86"
The month with the highest snowfall is January (3.86").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Idaho Falls, ID
- Average snowfall days in January: 12.8 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Idaho Falls, ID
- Average daylight in January: 9h and 24min
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 42min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in January
Idaho Falls, ID
- Average sunshine days in January: 18.4 days
The month with the most sunshine days is October (22.1 days).
The month with the least sunshine days is February (16.2 days).
Average UV index in January
Idaho Falls, ID
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in January
Idaho Falls, ID
- Average cloud cover in January: 51
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in January
Idaho Falls, ID
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
