January weather forecast
Mullan, ID

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Weather in January

January, the same as December, in Mullan, Idaho, is another subzero cold winter month, with an average temperature fluctuating between 18.5°F (-7.5°C) and 30°F (-1.1°C).

Temperature

The transition into January shows a subtle variation to a still subzero cold 30°F (-1.1°C) from December's 27.9°F (-2.3°C) in the average high-temperature. The nighttime temperature in Mullan, Idaho, during January, averages of 18.5°F (-7.5°C).

Humidity

The most humid month in Mullan, Idaho, is January, with an average relative humidity of 93%.

Rainfall

The month with the most rainfall is January, when the rain falls for 2.8 days and typically aggregates up to 3.58" (91mm) of precipitation.

Snowfall

Months with snowfall in Mullan are January through June, September through December. January is the month with the most snowfall in Mullan, Idaho. Snow falls for 20.6 days and accumulates 29.53" (750mm) of snow.

Daylight

In Mullan, the average length of the day in January is 8h and 58min.
On the first day of the month, sunrise is at 7:30 am and sunset at 4:02 pm. On the last day of January, sunrise is at 7:10 am and sunset at 4:42 pm PST.

Sunshine

The month with the least sunshine in Mullan is January, with an average of 3.5h of sunshine.

UV index

The months with the lowest UV index in Mullan are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 1 in January translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. To cut down UV radiation exposure by about half, sport a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Frequently asked questions

How cold is it in Mullan in January?

In Mullan, 30°F (-1.1°C) is the average high-temperature and 18.5°F (-7.5°C) is the average low-temperature during January.

What is the most humid month in Mullan?

January is the most humid month in Mullan, Idaho, with an average relative humidity of 93%.

What is the average humidity in January in Mullan?

The average relative humidity in January in Mullan, Idaho, is 93%.

What is the wettest month in Mullan?

January is the month with the most rainfall in Mullan. Rain falls for 2.8 days and accumulates 3.58" (91mm) of precipitation.

How much does it rain in Mullan in January?

In Mullan, during January, the rain falls for 2.8 days and regularly aggregates up to 3.58" (91mm) of precipitation.

When does it snow the most in Mullan?

The month with the most snowfall in Mullan, Idaho, is January, when snow falls for 20.6 days and typically aggregates up to 29.53" (750mm) of snow.

How many days does it snow in January in Mullan?

In Mullan, Idaho, in January, during 20.6 snowfall days, 29.53" (750mm) of snow is typically accumulated.

How many hours of daylight does Mullan have in January?

In January, the average day length in Mullan is 8h and 58min.

When are sunrise and sunset in January in Mullan?

On the first day of January in Mullan, Idaho, sunrise is at 7:30 am and sunset at 4:02 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 4:42 pm PST.

What is the month with the least sunshine in Mullan?

January has the least sunshine of the year in Mullan, with an average of 3.5h of sunshine.

How long on average sun shines in January in Mullan?

In January, the average sunshine duration is 3.5h.

When is the lowest UV index in Mullan?

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

What is the UV index intensity in January in Mullan?

In January, the average daily maximum UV index in Mullan is 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
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
Mullan, ID

Average temperature in January - Mullan, ID
  • Average high temperature in January: 30°F

The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in January: 18.5°F

The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (16.9°F).

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Average pressure in January
Mullan, ID

Average pressure in January - Mullan, ID
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).

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Average wind speed in January
Mullan, ID

Average wind speed in January - Mullan, ID
  • Average wind speed in January: 4.4mph

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest months (with the lowest average wind speed) are August and September (4.1mph).

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Average humidity in January
Mullan, ID

Average humidity in January - Mullan, ID
  • Average humidity in January: 93%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (54%).

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Average rainfall in January
Mullan, ID

Average rainfall in January - Mullan, ID
  • Average rainfall in January: 3.58"

The wettest month (with the highest rainfall) is January (3.58").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days in January
Mullan, ID

Average rainfall days in January - Mullan, ID
  • Average rainfall days in January: 2.8 days

The month with the highest number of rainy days is May (13.3 days).
The months with the least rainy days are January and February (2.8 days).

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Average snowfall in January
Mullan, ID

Average snowfall in January - Mullan, ID
  • Average snowfall in January: 29.53"

The month with the highest snowfall is January (29.53").
The months with the least snowfall are July and August (0").

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Average snowfall days in January
Mullan, ID

Average snowfall days in January - Mullan, ID
  • Average snowfall days in January: 20.6 days

The month with the highest number of snowfall days is March (22.1 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
Mullan, ID

Average daylight in January / Average sunshine in January - Mullan, ID
  • Average daylight in January: 9h and 0min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in January: 3h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in January
Mullan, ID

Average sunshine days in January - Mullan, ID
  • Average sunshine days in January: 11 days

The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is March (7.5 days).

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Average UV index in January
Mullan, ID

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

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

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Average cloud cover in January
Mullan, ID

Average cloud cover in January - Mullan, ID
  • Average cloud cover in January: 65

The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in January
Mullan, ID

Average visibility in January - Mullan, ID
  • Average visibility in January: 2mi

The months with the highest visibility are June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).

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Mullan, Idaho, USA

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