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's onset brings an average high-temperature of a still subzero cold 28.8°F (-1.8°C), showing a minute difference from December's 28.6°F (-1.9°C). During the month of January, Lewiston anticipates a mean low-temperature of 13.6°F (-10.2°C).Humidity
January is the most humid month, with an average relative humidity of 90%.Rainfall
The month with the most rainfall in Lewiston, Utah, is January, when the rain falls for 8.2 days and typically aggregates up to 2.24" (57mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Lewiston. January is the month with the most snowfall in Lewiston. Snow falls for 15.9 days and accumulates 16.73" (425mm) of snow.Daylight
In Lewiston, the average length of the day in January is 9h and 32min.On the first day of the month, sunrise is at 7:55 am and sunset at 5:06 pm. On the last day of January, in Lewiston, sunrise is at 7:41 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 in Lewiston. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In January, a daily UV index of 1 turns into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. 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 in Lewiston?
What is the most humid month in Lewiston?
What is the average humidity in January in Lewiston?
What is the rainiest month in Lewiston?
How many days does it rain in January in Lewiston?
When does it snow the most in Lewiston?
How many days does it snow in January in Lewiston?
What is the average length of the day in January in Lewiston?
When is the sunrise / sunset in January in Lewiston?
What is the month with the least sunshine in Lewiston?
How long on average sun shines in January in Lewiston?
When is the lowest UV index in Lewiston?
How high is the UV index in January in Lewiston?
Average temperature in January
Lewiston, UT
- Average high temperature in January: 28.8°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in January: 13.6°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in January
Lewiston, UT
- Average pressure in January: 30.29"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Lewiston, UT
- Average wind speed in January: 4.2mph
The windiest months (with the highest average wind speed) are April, June and August (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in January
Lewiston, UT
- 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
Lewiston, UT
- Average rainfall in January: 2.24"
The wettest month (with the highest rainfall) is January (2.24").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in January
Lewiston, UT
- Average rainfall days in January: 8.2 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in January
Lewiston, UT
- 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
Lewiston, UT
- Average snowfall days in January: 15.9 days
The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in January /
Average sunshine in January
Lewiston, UT
- 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 12min).
- Average sunshine in January: 4h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in January
Lewiston, UT
- Average sunshine days in January: 14.1 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in January
Lewiston, UT
- 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
Lewiston, UT
- Average cloud cover in January: 49
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in January
Lewiston, UT
- 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).
Lewiston, Utah, USA
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