December weather forecast
Wallace, ID

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Weather in December

The first month of the winter, December, is also a subzero cold month in Wallace, Idaho, with an average temperature varying between 30°F (-1.1°C) and 19.2°F (-7.1°C).

Temperature

Wallace's coldest weather arrives in December, when temperatures average a high of 30°F (-1.1°C) and a low of 19.2°F (-7.1°C).

Humidity

In December, the average relative humidity in Wallace is 91%.

Rainfall

In December, the rain falls for 7.2 days. Throughout December, 2.87" (73mm) of precipitation is accumulated. Throughout the year, in Wallace, there are 128.7 rainfall days, and 24.65" (626mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Wallace, in December, snow falls for 15.8 days, with typically accumulated 12.72" (323mm) of snow. Throughout the year, in Wallace, there are 74.7 snowfall days, and 63.27" (1607mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 8h and 30min of daylight.
On the first day of the month, sunrise is at 7:11 am and sunset at 3:54 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:02 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 3.2h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.
Note: A maximum high daily UV index of 1 during December translates into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Jun 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Temperature records mark December as the coldest month, with highs averaging 30°F (-1.1°C) and lows at 19.2°F (-7.1°C).

How cold is it in December?

During December, Wallace experiences an average high-temperature of 30°F (-1.1°C) and a low-temperature of 19.2°F (-7.1°C).

What is the average humidity in December?

In Wallace, the average relative humidity in December is 91%.

How many days does it rain in December?

In December, the rain falls for 7.2 days. Throughout December, 2.87" (73mm) of precipitation is accumulated.

How much does it snow in December?

In Wallace, during December, snow falls for 15.8 days and regularly aggregates up to 12.72" (323mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 30min of daylight.

What is the average length of the day in December?

In December, the average day length is 8h and 31min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:11 am and sunset at 3:54 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:02 pm PST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 3.2h of sunshine.

How many hours of sunshine does Wallace have in December?

The average sunshine duration in December is 3.2h.

When is the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's 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 December
Wallace, ID

Average temperature in December - Wallace, ID
  • Average high temperature in December: 30°F

The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (30°F).

  • Average low temperature in December: 19.2°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).

Average pressure in December
Wallace, ID

Average pressure in December - Wallace, ID
  • Average pressure in December: 30.17"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).

Average wind speed in December
Wallace, ID

Average wind speed in December - Wallace, ID
  • Average wind speed in December: 4.2mph

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest months (with the lowest average wind speed) are September and December (4.2mph).

Average humidity in December
Wallace, ID

Average humidity in December - Wallace, ID
  • Average humidity in December: 91%

The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are July and August (53%).

Average rainfall in December
Wallace, ID

Average rainfall in December - Wallace, ID
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is January (3.07").
The driest month (with the least rainfall) is July (0.51").

Average rainfall days in December
Wallace, ID

Average rainfall days in December - Wallace, ID
  • Average rainfall days in December: 7.2 days

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

Average snowfall in December
Wallace, ID

Average snowfall in December - Wallace, ID
  • Average snowfall in December: 12.72"

The month with the highest snowfall is January (16.5").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Wallace, ID

Average snowfall days in December - Wallace, ID
  • Average snowfall days in December: 15.8 days

The month with the highest number of snowfall days is December (15.8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
Wallace, ID

Average daylight in December / Average sunshine in December - Wallace, ID
  • Average daylight in December: 8h and 3min

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 December: 3h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).

Average sunshine days in December
Wallace, ID

Average sunshine days in December - Wallace, ID
  • Average sunshine days in December: 12 days

The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (9.3 days).

Average UV index in December
Wallace, ID

Average UV index in December - Wallace, 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, November and December (UV index 1).

Average cloud cover in December
Wallace, ID

Average cloud cover in December - Wallace, ID
  • Average cloud cover in December: 67

The months with the most cloud cover are January, February and December (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in December
Wallace, ID

Average visibility in December - Wallace, ID
  • Average visibility in December: 3mi

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

Wallace, Idaho, USA

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