December weather forecast
Rathdrum, ID

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Weather in December

Winter's cold grip firmly takes hold in December, with temperature lows plummeting down to 21.2°F (-6°C). The highest rainfall within the year at 3.15" (80mm) indicates the wet nature of the season. Sweaters, scarfs, and warm boots become a necessity with snowfalls becoming regular occurrences. The extended darkness due to fewer daylight hours signals the height of winter. Preparations for snow-forward conditions become crucial for weathering the chills in Rathdrum.

Temperature

The coldest month is December, with an average high-temperature of 31.3°F (-0.4°C) and an average low-temperature of 21.2°F (-6°C).

Humidity

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

Rainfall

In December, the rain falls for 10.8 days. Throughout December, 3.15" (80mm) of precipitation is accumulated. Throughout the year, in Rathdrum, there are 141.2 rainfall days, and 22.6" (574mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Rathdrum. In Rathdrum, during December, snow falls for 16.9 days and regularly aggregates up to 13.66" (347mm) of snow. In Rathdrum, during the entire year, snow falls for 71.8 days and aggregates up to 56.54" (1436mm) of snow.

Daylight

With an average of 8h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:16 am and sunset at 3:57 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:05 pm PST.

Sunshine

With an average of 3.4h of sunshine, December has the least sunshine of the year in Rathdrum.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 1 during December, leads to the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. To guard against the harmful effects of the Sun, minimize exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What is the coldest month in Rathdrum?

December brings the lowest temperatures in Rathdrum, Idaho, with an average high of 31.3°F (-0.4°C) and an average low of 21.2°F (-6°C).

How cold is it in Rathdrum in December?

The average high-temperature, in December, in Rathdrum, is 31.3°F (-0.4°C), while the average low-temperature is 21.2°F (-6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 82.4°F (28°C).

What is the average humidity in December in Rathdrum?

The average relative humidity in December is 90%.

How many days does it rain in December in Rathdrum?

In Rathdrum, Idaho, during December, the rain falls for 10.8 days and regularly aggregates up to 3.15" (80mm) of precipitation.

How many days does it snow in December in Rathdrum?

In December, in Rathdrum, Idaho, it is snowing for 16.9 days. Throughout December, 13.66" (347mm) of snow is accumulated.

What is the month with the shortest days in Rathdrum?

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

How many hours of daylight does Rathdrum have in December?

The average day length in December is 8h and 29min.

When is the sunrise / sunset in December in Rathdrum?

In December, on the first day of the month, sunrise is at 7:16 am and sunset at 3:57 pm. On the last day of the month, in Rathdrum, Idaho, sunrise is at 7:36 am and sunset at 4:05 pm PST.

What is the month with the least sunshine in Rathdrum?

With an average of 3.4h of sunshine, December has the least sunshine of the year in Rathdrum, Idaho.

How long on average sun shines in December in Rathdrum?

In Rathdrum, the average sunshine duration in December is 3.4h.

What is the month with the lowest UV index in Rathdrum?

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

What is the UV index reading in December in Rathdrum?

In Rathdrum, Idaho, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Rathdrum, ID

Average temperature in December - Rathdrum, ID
  • Average high temperature in December: 31.3°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (31.3°F).

  • Average low temperature in December: 21.2°F

The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).

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Average pressure in December
Rathdrum, ID

Average pressure in December - Rathdrum, ID
  • Average pressure in December: 30.17"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

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Average wind speed in December
Rathdrum, ID

Average wind speed in December - Rathdrum, ID
  • Average wind speed in December: 3.9mph

The windiest month (with the highest average wind speed) is April (5mph).
The calmest month (with the lowest average wind speed) is December (3.9mph).

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Average humidity in December
Rathdrum, ID

Average humidity in December - Rathdrum, ID
  • Average humidity in December: 90%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (48%).

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Average rainfall in December
Rathdrum, ID

Average rainfall in December - Rathdrum, ID
  • Average rainfall in December: 3.15"

The wettest month (with the highest rainfall) is January (3.27").
The driest months (with the least rainfall) are July and August (0.43").

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Average rainfall days in December
Rathdrum, ID

Average rainfall days in December - Rathdrum, ID
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (5.6 days).

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Average snowfall in December
Rathdrum, ID

Average snowfall in December - Rathdrum, ID
  • Average snowfall in December: 13.66"

The month with the highest snowfall is January (16.57").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Rathdrum, ID

Average snowfall days in December - Rathdrum, ID
  • Average snowfall days in December: 16.9 days

The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 3h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

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Average sunshine days in December
Rathdrum, ID

Average sunshine days in December - Rathdrum, ID
  • Average sunshine days in December: 9.9 days

The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index in December
Rathdrum, ID

Average UV index in December - Rathdrum, ID
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 1).

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Average cloud cover in December
Rathdrum, ID

Average cloud cover in December - Rathdrum, ID
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in December
Rathdrum, ID

Average visibility in December - Rathdrum, ID
  • Average visibility in December: 4mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).

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Rathdrum, Idaho, USA

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