December weather forecast
Sweet, ID

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Weather in December

The first month of the winter, December, is still a cold month in Sweet, Idaho, with an average temperature varying between 22.8°F (-5.1°C) and 34.9°F (1.6°C).

Temperature

The coldest period tends to be December, when average temperatures fluctuate between a high of 34.9°F (1.6°C) and a low of 22.8°F (-5.1°C).

Humidity

In December, the average relative humidity in Sweet, Idaho, is 79%.

Rainfall

In Sweet, in December, it is raining for 8.4 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 91.7 rainfall days, and 10.28" (261mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Sweet, Idaho. The month with the most snowfall is December, when snow falls for 7.5 days and typically aggregates up to 4.33" (110mm) of snow.

Daylight

The month with the shortest days in Sweet is December, with an average of 9h and 0min of daylight.
On the first day of December, sunrise is at 8:00 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 8:19 am and sunset at 5:17 pm MST.

Sunshine

With an average of 5.3h of sunshine, December has the least sunshine of the year.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during December translates into 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. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in Sweet?

Sweet's December weather, marked by an average high temperature of 34.9°F (1.6°C) and an average low temperature of 22.8°F (-5.1°C), is the coldest in the year.

How cold is December in Sweet?

The average high-temperature and low-temperature during December are 34.9°F (1.6°C) and 22.8°F (-5.1°C) respectively.

What is the average humidity in December in Sweet?

In Sweet, Idaho, the average relative humidity in December is 79%.

How much does it rain in Sweet in December?

In Sweet, Idaho, in December, during 8.4 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When does it snow the most in Sweet?

The month with the most snowfall in Sweet, Idaho, is December, when snow falls for 7.5 days and typically aggregates up to 4.33" (110mm) of snow.

How many days does it snow in December in Sweet?

In Sweet, Idaho, in December, during 7.5 snowfall days, 4.33" (110mm) of snow is typically accumulated.

What is the month with the shortest days in Sweet?

December has the shortest days of the year in Sweet, Idaho, with an average of 9h and 0min of daylight.

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

The average day length in December is 8h and 58min.

When are sunrise and sunset in December in Sweet?

On the first day of December in Sweet, Idaho, sunrise is at 8:00 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 8:19 am and sunset at 5:17 pm MST.

What is the month with the least sunshine in Sweet?

December has the least sunshine of the year in Sweet, Idaho, with an average of 5.3h of sunshine.

How long on average sun shines in December in Sweet?

In December, the average sunshine duration in Sweet is 5.3h.

When is the lowest UV index in Sweet?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sweet.

How high is the UV index in December in Sweet?

In December, the average daily maximum UV index in Sweet, Idaho, is 2. 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
Sweet, ID

Average temperature in December - Sweet, ID
  • Average high temperature in December: 34.9°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (34.9°F).

  • Average low temperature in December: 22.8°F

The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (22.8°F).

Average pressure in December
Sweet, ID

Average pressure in December - Sweet, ID
  • Average pressure in December: 30.21"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

Average wind speed in December
Sweet, ID

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

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

Average humidity in December
Sweet, ID

Average humidity in December - Sweet, ID
  • Average humidity in December: 79%

The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are July and August (31%).

Average rainfall in December
Sweet, ID

Average rainfall in December - Sweet, ID
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is March (1.54").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Sweet, ID

Average rainfall days in December - Sweet, ID
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is July (3.2 days).

Average snowfall in December
Sweet, ID

Average snowfall in December - Sweet, ID
  • Average snowfall in December: 4.33"

The month with the highest snowfall is December (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Sweet, ID

Average snowfall days in December - Sweet, ID
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is December (7.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Sweet, 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 2min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in December
Sweet, ID

Average sunshine days in December - Sweet, ID
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (15.3 days).

Average UV index in December
Sweet, ID

Average UV index in December - Sweet, ID
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Sweet, ID

Average cloud cover in December - Sweet, ID
  • Average cloud cover in December: 43

The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 8).

Average visibility in December
Sweet, ID

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

The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).

Sweet, Idaho, USA

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