December weather forecastTwo Forks, ID

December

Weather in December

The first month of the winter, December, is also a subzero cold month in Two Forks, Idaho, with an average temperature ranging between max 23.9°F (-4.5°C) and min 9.5°F (-12.5°C).

Temperature

With an average high-temperature of 23.9°F (-4.5°C) and an average low-temperature of 9.5°F (-12.5°C), December is the coldest month.

Humidity

In December, the average relative humidity in Two Forks is 90%.

Rainfall

In Two Forks, in December, during 5.9 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Two Forks, Idaho, during the entire year, the rain falls for 110.1 days and collects up to 23.35" (593mm) of precipitation.

Snowfall

Months with snowfall are January through June, September through December. In Two Forks, in December, during 21.8 snowfall days, 19.41" (493mm) of snow is typically accumulated. Throughout the year, there are 125.3 snowfall days, and 120.47" (3060mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 0min of daylight.
On the first day of the month, sunrise is at 7:39 am and sunset at 4:48 pm. On the last day of December, in Two Forks, Idaho, sunrise is at 7:58 am and sunset at 4:57 pm MST.

Sunshine

In Two Forks, the average sunshine in December is 4.2h.

UV index

The months with the lowest UV index are January through March and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the maximum UV index of 1 suggests this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Temperature readings reach their annual highs in December, averaging 23.9°F (-4.5°C) and a minimum average of 9.5°F (-12.5°C).

In December, the average high-temperature and low-temperature in Two Forks, Idaho, are 23.9°F (-4.5°C) and 9.5°F (-12.5°C) respectively.

In Two Forks, Idaho, the average relative humidity in December is 90%.

In Two Forks, during December, the rain falls for 5.9 days and regularly aggregates up to 2.4" (61mm) of precipitation.

In Two Forks, Idaho, in December, snow falls for 21.8 days, with typically accumulated 19.41" (493mm) of snow.

The month with the shortest days in Two Forks, Idaho, is December, with an average of 9h and 0min of daylight.

In December, the average day length in Two Forks, Idaho, is 8h and 59min.

In December, on the first day of the month, sunrise is at 7:39 am and sunset at 4:48 pm. On the last day of the month, in Two Forks, sunrise is at 7:58 am and sunset at 4:57 pm MST.

The average sunshine duration in December in Two Forks, Idaho, is 4.2h.

January through March and December, with an average maximum UV index of 1, are months with the lowest UV index in Two Forks, Idaho.

The average daily maximum UV index in December in Two Forks, Idaho, is 1. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Two Forks, ID

  • Average high temperature in December: 23.9°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is December (23.9°F).

  • Average low temperature in December: 9.5°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).

Average pressure in December
Two Forks, ID

  • Average pressure in December: 30.25"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in December
Two Forks, ID

  • Average wind speed in December: 4.6mph

The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest months (with the lowest average wind speed) are January and December (4.6mph).

Average humidity in December
Two Forks, ID

  • Average humidity in December: 90%

The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is August (45%).

Average rainfall in December
Two Forks, ID

  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is February (2.91").
The driest month (with the least rainfall) is July (0.71").

Average rainfall days in December
Two Forks, ID

  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in December
Two Forks, ID

  • Average snowfall in December: 19.41"

The month with the highest snowfall is January (24.06").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Two Forks, ID

  • Average snowfall days in December: 21.8 days

The month with the highest number of snowfall days is December (21.8 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Two Forks, 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: 4h and 12min

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 0min).

Average sunshine days in December
Two Forks, ID

  • Average sunshine days in December: 9 days

The month with the most sunshine days is July (20.6 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in December
Two Forks, ID

  • Average UV index in December: 1

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

Average cloud cover in December
Two Forks, ID

  • Average cloud cover in December: 60

The month with the most cloud cover is February (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 13).

Average visibility in December
Two Forks, ID

  • Average visibility in December: 4mi

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).