December weather forecast
Lineville, IA

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Weather in December

The first month of the winter, December, is also an icy month in Lineville, Iowa, with an average temperature fluctuating between 35.6°F (2°C) and 23.4°F (-4.8°C).

Temperature

December brings a decrease in the average high-temperature, shifting from a chilly 48.6°F (9.2°C) in November to a wintry 35.6°F (2°C). December's nights in Lineville observe an average temperature of 23.4°F (-4.8°C).

Humidity

In December, the average relative humidity is 79%.

Rainfall

The months with the least rainfall in Lineville are January and December Rain falls for 5.7 days and accumulates 0.67" (17mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In Lineville, in December, during 5.9 snowfall days, 1.14" (29mm) of snow is typically accumulated. In Lineville, during the entire year, snow falls for 30.2 days and aggregates up to 10.16" (258mm) of snow.

Daylight

The month with the shortest days in Lineville is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:19 am and sunset at 4:47 pm. On the last day of December, in Lineville, sunrise is at 7:37 am and sunset at 4:57 pm CST.

Sunshine

In Lineville, the average sunshine in December is 4.9h.

UV index

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the UV index of 2 transforms into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

How cold is December in Lineville?

The high-temperature, in December, in Lineville, records 35.6°F (2°C), while the low-temperature is 23.4°F (-4.8°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December in Lineville?

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

What is the driest month in Lineville?

January and December are months with the least rain in Lineville when the rain falls for 5.7 days and typically aggregates up to 0.67" (17mm) of rain.

How much does it rain in Lineville in December?

In Lineville, in December, during 5.7 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

How many days does it snow in December in Lineville?

In Lineville, during December, snow falls for 5.9 days and regularly aggregates up to 1.14" (29mm) of snow.

What is the month with the shortest days in Lineville?

The month with the shortest days in Lineville, Iowa, is December, with an average of 9h and 18min of daylight.

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

In Lineville, the average day length in December is 9h and 20min.

What time are sunrise and sunset in December in Lineville?

On the first day of December in Lineville, Iowa, sunrise is at 7:19 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:57 pm CST.

How many hours of sunshine does Lineville have in December?

In Lineville, the average sunshine duration in December is 4.9h.

What is the UV index reading in December in Lineville?

In December, the average daily maximum UV index in Lineville, Iowa, is 2. A UV Index reading of 2, and below, represents 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
Lineville, IA

Average temperature in December - Lineville, IA
  • Average high temperature in December: 35.6°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 23.4°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in December
Lineville, IA

Average pressure in December - Lineville, IA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in December
Lineville, IA

Average wind speed in December - Lineville, IA
  • Average wind speed in December: 9.9mph

The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

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Average humidity in December
Lineville, IA

Average humidity in December - Lineville, IA
  • Average humidity in December: 79%

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Lineville, IA

Average rainfall in December - Lineville, IA
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is June (3.43").
The driest months (with the least rainfall) are January and December (0.67").

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Average rainfall days in December
Lineville, IA

Average rainfall days in December - Lineville, IA
  • Average rainfall days in December: 5.7 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is January (4.8 days).

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Average snowfall in December
Lineville, IA

Average snowfall in December - Lineville, IA
  • Average snowfall in December: 1.14"

The month with the highest snowfall is January (2.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Lineville, IA

Average snowfall days in December - Lineville, IA
  • Average snowfall days in December: 5.9 days

The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Lineville, IA

Average daylight in December / Average sunshine in December - Lineville, IA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in December
Lineville, IA

Average sunshine days in December - Lineville, IA
  • Average sunshine days in December: 20.3 days

The month with the most sunshine days is December (20.3 days).
The month with the least sunshine days is June (8.9 days).

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Average UV index in December
Lineville, IA

Average UV index in December - Lineville, IA
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in December
Lineville, IA

Average cloud cover in December - Lineville, IA
  • Average cloud cover in December: 47

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Lineville, IA

Average visibility in December - Lineville, IA
  • Average visibility in December: 6mi

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

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Lineville, Iowa, USA

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