January weather forecast
Lanark, ID

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Weather in January

January, like December, is a freezing cold winter month in Lanark, Idaho, with an average temperature ranging between max 26.2°F (-3.2°C) and min 7.9°F (-13.4°C).

Temperature

In Lanark, January's average high-temperature stands at a still freezing cold 26.2°F (-3.2°C), closely related to the preceding month. An average low-temperature of 7.9°F (-13.4°C) is recorded in the month of January in Lanark.

Humidity

The months with the highest humidity in Lanark are January and February, with an average relative humidity of 92%.

Rainfall

In Lanark, during January, the rain falls for 6 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, there are 117.5 rainfall days, and 20.24" (514mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Lanark, in January, snow falls for 19.8 days, with typically accumulated 18.11" (460mm) of snow. Throughout the year, there are 116.1 snowfall days, and 91.14" (2315mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 31min.
On the first day of the month, sunrise is at 7:54 am and sunset at 5:03 pm. On the last day of January, sunrise is at 7:40 am and sunset at 5:38 pm MST.

Sunshine

With an average of 4.4h of sunshine, January has the least sunshine of the year in Lanark, Idaho.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, a daily UV index of 1 turns into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Lanark in January?

The high-temperature during January is 26.2°F (-3.2°C) and the low-temperature is 7.9°F (-13.4°C).

What are the most humid months in Lanark?

January and February, with an average relative humidity of 92%, are most humid months in Lanark, Idaho.

What is the average humidity in January in Lanark?

The average relative humidity in January in Lanark is 92%.

How many days does it rain in January in Lanark?

In January, in Lanark, Idaho, the rain falls for 6 days. Throughout January, 2.17" (55mm) of precipitation is accumulated.

How much does it snow in Lanark in January?

In January, it is snowing for 19.8 days. Throughout January, 18.11" (460mm) of snow is accumulated.

What is the average length of the day in January in Lanark?

In January, the average day length in Lanark, Idaho, is 9h and 31min.

When is the sunrise / sunset in January in Lanark?

In January, on the first day of the month, sunrise is at 7:54 am and sunset at 5:03 pm. On the last day of the month, in Lanark, sunrise is at 7:40 am and sunset at 5:38 pm MST.

What is the month with the least sunshine in Lanark?

The month with the least sunshine in Lanark is January, with an average of 4.4h of sunshine.

How many hours of sunshine does Lanark have in January?

In January, the average sunshine duration is 4.4h.

When is the lowest UV index in Lanark?

The months with the lowest UV index in Lanark are January, November and December, with an average maximum UV index of 1.

What is the UV index reading in January in Lanark?

In Lanark, Idaho, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to 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
Lanark, ID

Average temperature in January - Lanark, ID
  • Average high temperature in January: 26.2°F

The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is December (25.2°F).

  • Average low temperature in January: 7.9°F

The month with the highest average low temperature is July (48.9°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).

Average pressure in January
Lanark, ID

Average pressure in January - Lanark, ID
  • 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 (29.9"Hg).

Average wind speed in January
Lanark, ID

Average wind speed in January - Lanark, ID
  • Average wind speed in January: 4.2mph

The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).

Average humidity in January
Lanark, ID

Average humidity in January - Lanark, ID
  • Average humidity in January: 92%

The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (42%).

Average rainfall in January
Lanark, ID

Average rainfall in January - Lanark, ID
  • Average rainfall in January: 2.17"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is July (0.63").

Average rainfall days in January
Lanark, ID

Average rainfall days in January - Lanark, ID
  • Average rainfall days in January: 6 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6 days).

Average snowfall in January
Lanark, ID

Average snowfall in January - Lanark, ID
  • Average snowfall in January: 18.11"

The month with the highest snowfall is February (18.39").
The months with the least snowfall are July and August (0").

Average snowfall days in January
Lanark, ID

Average snowfall days in January - Lanark, ID
  • Average snowfall days in January: 19.8 days

The month with the highest number of snowfall days is December (21.6 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in January / Average sunshine in January - Lanark, ID
  • 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 6min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in January
Lanark, ID

Average sunshine days in January - Lanark, ID
  • Average sunshine days in January: 11.3 days

The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is February (6.8 days).

Average UV index in January
Lanark, ID

Average UV index in January - Lanark, ID
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in January
Lanark, ID

Average cloud cover in January - Lanark, ID
  • Average cloud cover in January: 57

The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 12).

Average visibility in January
Lanark, ID

Average visibility in January - Lanark, ID
  • Average visibility in January: 3mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).

Lanark, Idaho, USA

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