January weather forecast
Clayton, ID

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Weather in January

January, the same as December, in Clayton, Idaho, is another subzero cold winter month, with temperature in the range of an average low of 8.1°F (-13.3°C) and an average high of 28.4°F (-2°C).

Temperature

With the onset of January, a modest change to a still freezing cold 28.4°F (-2°C) from December's 26.1°F (-3.3°C) is noted in high-temperature. In January, Clayton reports a consistent average low-temperature of 8.1°F (-13.3°C) during the nights.

Humidity

The average relative humidity in January in Clayton, Idaho, is 86%.

Rainfall

In Clayton, in January, it is raining for 3.8 days, with typically 0.47" (12mm) of accumulated precipitation. In Clayton, 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 Clayton are January through June, September through December. In January, in Clayton, it is snowing for 9 days. Throughout January, 3.23" (82mm) of snow is accumulated. In Clayton, Idaho, during the entire year, snow falls for 51.7 days and aggregates up to 18.62" (473mm) of snow.

Daylight

In Clayton, the average length of the day in January is 9h and 19min.
On the first day of the month, sunrise is at 8:13 am and sunset at 5:09 pm. On the last day of January, in Clayton, sunrise is at 7:56 am and sunset at 5:45 pm MST.

Sunshine

January has the least sunshine of the year in Clayton, with an average of 5.8h of sunshine.

UV index

The months with the lowest UV index in Clayton are January through April, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 2 in January translates into the following instructions:
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. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Resources | Updated: Feb 12, 2024 | Published by: Weather U.S.

Frequently asked questions

How cold is January in Clayton?

In January, the average high-temperature and low-temperature in Clayton are 28.4°F (-2°C) and 8.1°F (-13.3°C) respectively.

What is the average humidity in January in Clayton?

In Clayton, the average relative humidity in January is 86%.

How many days does it rain in January in Clayton?

In Clayton, Idaho, during January, the rain falls for 3.8 days and regularly aggregates up to 0.47" (12mm) of precipitation.

How much does it snow in Clayton in January?

In Clayton, Idaho, during January, snow falls for 9 days and regularly aggregates up to 3.23" (82mm) of snow.

How many hours of daylight does Clayton have in January?

The average day length in January in Clayton, Idaho, is 9h and 19min.

When is the sunrise / sunset in January in Clayton?

On the first day of January in Clayton, sunrise is at 8:13 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:56 am and sunset at 5:45 pm MST.

What is the month with the least sunshine in Clayton?

With an average of 5.8h of sunshine, January has the least sunshine of the year.

How long on average sun shines in January in Clayton?

The average sunshine duration in January is 5.8h.

What are the months with the lowest UV index in Clayton?

The months with the lowest UV index in Clayton, Idaho, are January through April, October through December, with an average maximum UV index of 2.

How high is the UV index in January in Clayton?

In Clayton, Idaho, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Clayton, ID

Average temperature in January - Clayton, 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).

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Average pressure in January
Clayton, ID

Average pressure in January - Clayton, 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).

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Average wind speed in January
Clayton, ID

Average wind speed in January - Clayton, 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).

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Average humidity in January
Clayton, ID

Average humidity in January - Clayton, 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%).

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Average rainfall in January
Clayton, ID

Average rainfall in January - Clayton, 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").

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Average rainfall days in January
Clayton, ID

Average rainfall days in January - Clayton, 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).

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Average snowfall in January
Clayton, ID

Average snowfall in January - Clayton, 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").

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Average snowfall days in January
Clayton, ID

Average snowfall days in January - Clayton, 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).

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Average daylight in January /
Average sunshine in January
Clayton, ID

Average daylight in January / Average sunshine in January - Clayton, 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).

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Average sunshine days in January
Clayton, ID

Average sunshine days in January - Clayton, 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).

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Average UV index in January
Clayton, ID

Average UV index in January - Clayton, 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).

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Average cloud cover in January
Clayton, ID

Average cloud cover in January - Clayton, 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).

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Average visibility in January
Clayton, ID

Average visibility in January - Clayton, 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).

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Clayton, Idaho, USA

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