January weather forecast
Hailey, ID

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Weather in January

Hailey, Idaho, observes the beginning of the year with substantial cold and frequent snowfall. The temperature drops sharply and a thick snow blanket often covers the landscape. Highs of 27.9°F (-2.3°C) and lows of 9.5°F (-12.5°C) dominate the month, requiring residents and visitors to bundle up well against the chill. Snowy days, translating to approximately 13.6 days of snow, contribute to the weather and adds to the beauty of the Idaho scenery. Ski fanatics find January's weather condition extremely conducive for outdoor sports.

Temperature

The average high-temperature for January is a still freezing cold 27.9°F (-2.3°C), closely aligning with the temperature of the preceding month. The average low-temperature of 9.5°F (-12.5°C) is witnessed in Hailey, Idaho, during January.

Humidity

In January, the average relative humidity is 84%.

Rainfall

In January, the rain falls for 4.7 days. Throughout January, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 85.1 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In Hailey, in January, snow falls for 13.6 days, with typically accumulated 12.99" (330mm) of snow. In Hailey, during the entire year, snow falls for 72.5 days and aggregates up to 57.05" (1449mm) of snow.

Daylight

The average length of the day in January in Hailey is 9h and 23min.
On the first day of January, sunrise is at 8:10 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:46 pm MST.

Sunshine

The month with the least sunshine is January, with an average of 5.6h of sunshine.

UV index

In Hailey, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 2 in January leads to these guidelines:
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. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

How cold is it in Hailey in January?

In Hailey, in January, the average high-temperature is 27.9°F (-2.3°C), and the average low-temperature is 9.5°F (-12.5°C).

What is the average humidity in January in Hailey?

The average relative humidity in January in Hailey is 84%.

How many days does it rain in January in Hailey?

In January, in Hailey, the rain falls for 4.7 days. Throughout January, 1.57" (40mm) of precipitation is accumulated.

How many days does it snow in January in Hailey?

In Hailey, in January, during 13.6 snowfall days, 12.99" (330mm) of snow is typically accumulated.

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

In January, the average day length is 9h and 23min.

When is the sunrise / sunset in January in Hailey?

In January, on the first day of the month, sunrise is at 8:10 am and sunset at 5:11 pm. On the last day of the month, in Hailey, sunrise is at 7:54 am and sunset at 5:46 pm MST.

What is the month with the least sunshine in Hailey?

The month with the least sunshine is January, with an average of 5.6h of sunshine.

How many hours of sunshine does Hailey have in January?

In Hailey, Idaho, the average sunshine duration in January is 5.6h.

How high is the UV index in January in Hailey?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from 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
Hailey, ID

Average temperature in January - Hailey, ID
  • Average high temperature in January: 27.9°F

The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in January: 9.5°F

The months with the highest average low temperature are July and August (52.3°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).

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Average pressure in January
Hailey, ID

Average pressure in January - Hailey, ID
  • Average pressure in January: 30.28"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in January
Hailey, ID

Average wind speed in January - Hailey, ID
  • Average wind speed in January: 4.8mph

The windiest month (with the highest average wind speed) is July (7.3mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).

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Average humidity in January
Hailey, ID

Average humidity in January - Hailey, ID
  • Average humidity in January: 84%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (34%).

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Average rainfall in January
Hailey, ID

Average rainfall in January - Hailey, ID
  • Average rainfall in January: 1.57"

The wettest month (with the highest rainfall) is February (1.77").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in January
Hailey, ID

Average rainfall days in January - Hailey, ID
  • Average rainfall days in January: 4.7 days

The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is August (3.4 days).

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Average snowfall in January
Hailey, ID

Average snowfall in January - Hailey, ID
  • Average snowfall in January: 12.99"

The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in January
Hailey, ID

Average snowfall days in January - Hailey, ID
  • Average snowfall days in January: 13.6 days

The month with the highest number of snowfall days is December (14.2 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
Hailey, ID

Average daylight in January / Average sunshine in January - Hailey, ID
  • Average daylight in January: 9h and 2min

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: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in January
Hailey, ID

Average sunshine days in January - Hailey, ID
  • Average sunshine days in January: 17 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is April (12.4 days).

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Average UV index in January
Hailey, ID

Average UV index in January - Hailey, ID
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in January
Hailey, ID

Average cloud cover in January - Hailey, 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 9).

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Average visibility in January
Hailey, ID

Average visibility in January - Hailey, 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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Hailey, Idaho, USA

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