December weather forecast
Hailey, ID

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Weather in December

December in Hailey, Idaho, means the return of wintry weather, frosty landscapes, and festive cheer. Snowflakes dance in the skies and transform the city into a winter wonderland. Heaviest snowfall of 11.26" (286mm) and coldest temperatures with lows of 10.2°F (-12.1°C) indicate that winter has fully set in. Sparkling holiday decorations against the stunning snow-covered backdrop offer a mesmerizing spectacle. Cold weather activities like ice skating and sledding become the highlight of the season.

Temperature

December brings the lowest temperatures in Hailey, with an average high of 25.7°F (-3.5°C) and an average low of 10.2°F (-12.1°C).

Humidity

In Hailey, the average relative humidity in December is 83%.

Rainfall

In Hailey, in December, it is raining for 6.4 days, with typically 1.57" (40mm) of accumulated precipitation. In Hailey, during the entire year, the rain falls for 85.1 days and collects up to 12.01" (305mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Hailey, in December, during 14.2 snowfall days, 11.26" (286mm) of snow is typically accumulated. Throughout the year, there are 72.5 snowfall days, and 57.05" (1449mm) of snow is accumulated.

Daylight

The month with the shortest days in Hailey is December, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 7:51 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 5:11 pm MST.

Sunshine

In December, the average sunshine is 5.8h.

UV index

In Hailey, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 2 translates into these guidelines:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Stay sun-safe with clothing that is both closely woven and worn loosely. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the coldest month in Hailey?

December is the coldest month, with an average high-temperature of 25.7°F (-3.5°C) and an average low-temperature of 10.2°F (-12.1°C).

How cold is December in Hailey?

Hailey in December has an average high-temperature of 25.7°F (-3.5°C) and an average low-temperature of 10.2°F (-12.1°C).

What is the average humidity in December in Hailey?

The average relative humidity in December is 83%.

How much does it rain in Hailey in December?

In Hailey, during December, the rain falls for 6.4 days and regularly aggregates up to 1.57" (40mm) of precipitation.

How many days does it snow in December in Hailey?

In Hailey, Idaho, during December, snow falls for 14.2 days and regularly aggregates up to 11.26" (286mm) of snow.

What is the month with the shortest days in Hailey?

With an average of 9h and 0min of daylight, December has the shortest days of the year in Hailey.

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

In December, the average day length in Hailey is 9h and 1min.

When is the sunrise / sunset in December in Hailey?

In December, on the first day of the month, sunrise is at 7:51 am and sunset at 5:01 pm. On the last day of the month, in Hailey, sunrise is at 8:10 am and sunset at 5:11 pm MST.

How many hours of sunshine does Hailey have in December?

The average sunshine duration in December is 5.8h.

What is the UV index reading in December in Hailey?

In Hailey, the average daily maximum UV index in December is 2. A UV Index value 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 December
Hailey, ID

Average temperature in December - Hailey, ID
  • Average high temperature in December: 25.7°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 December: 10.2°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 December
Hailey, ID

Average pressure in December - Hailey, ID
  • Average pressure in December: 30.24"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 December
Hailey, ID

Average wind speed in December - Hailey, ID
  • Average wind speed in December: 4.7mph

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 December
Hailey, ID

Average humidity in December - Hailey, ID
  • Average humidity in December: 83%

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 December
Hailey, ID

Average rainfall in December - Hailey, ID
  • Average rainfall in December: 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 December
Hailey, ID

Average rainfall days in December - Hailey, ID
  • Average rainfall days in December: 6.4 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 December
Hailey, ID

Average snowfall in December - Hailey, ID
  • Average snowfall in December: 11.26"

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 December
Hailey, ID

Average snowfall days in December - Hailey, ID
  • Average snowfall days in December: 14.2 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 December /
Average sunshine in December
Hailey, ID

Average daylight in December / Average sunshine in December - Hailey, ID
  • Average daylight in December: 9h and 0min

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 December: 5h and 5min

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 December
Hailey, ID

Average sunshine days in December - Hailey, ID
  • Average sunshine days in December: 15.3 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 December
Hailey, ID

Average UV index in December - Hailey, ID
  • Average UV index in December: 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 December
Hailey, ID

Average cloud cover in December - Hailey, ID
  • Average cloud cover in December: 39

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 December
Hailey, ID

Average visibility in December - Hailey, ID
  • Average visibility in December: 5mi

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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