December weather forecast
Farmington, IA

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Weather in December

December, the first month of the winter in Farmington, is also a wintry month, with an average temperature varying between 37.6°F (3.1°C) and 25.7°F (-3.5°C).

Temperature

Farmington observes a minor decrease in the average high-temperature with the arrival of December, falling from November's chilly 49.5°F (9.7°C) to a cold 37.6°F (3.1°C). An average nighttime temperature of 25.7°F (-3.5°C) is witnessed in Farmington throughout December.

Humidity

In December, the average relative humidity in Farmington is 78%.

Rainfall

In Farmington, during December, the rain falls for 6.1 days and regularly aggregates up to 1.3" (33mm) of precipitation. Throughout the year, in Farmington, there are 134.4 rainfall days, and 27.44" (697mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Farmington, in December, snow falls for 5.1 days, with typically accumulated 1.65" (42mm) of snow. Throughout the year, in Farmington, there are 24.7 snowfall days, and 11.69" (297mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:12 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:50 pm CST.

Sunshine

The average sunshine in December in Farmington is 4.8h.

UV index

The months with the lowest UV index in Farmington, Iowa, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in Farmington in December?

The average high-temperature and low-temperature during December are 37.6°F (3.1°C) and 25.7°F (-3.5°C) respectively. The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 89.6°F (32°C).

What is the average humidity in December in Farmington?

In Farmington, Iowa, the average relative humidity in December is 78%.

How many days does it rain in December in Farmington?

In Farmington, during December, the rain falls for 6.1 days and regularly aggregates up to 1.3" (33mm) of precipitation.

How much does it snow in Farmington in December?

In December, it is snowing for 5.1 days. Throughout December, 1.65" (42mm) of snow is accumulated.

What is the month with the shortest days in Farmington?

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

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

In Farmington, the average day length in December is 9h and 19min.

What time are sunrise and sunset in December in Farmington?

On the first day of December in Farmington, sunrise is at 7:12 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:50 pm CST.

How many hours of sunshine does Farmington have in December?

In December, the average sunshine duration in Farmington is 4.8h.

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

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

What is the UV index intensity in December in Farmington?

In December, the average daily maximum UV index in Farmington is 2. A UV Index of 2, and less, symbolizes 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
Farmington, IA

Average temperature in December - Farmington, IA
  • Average high temperature in December: 37.6°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in December
Farmington, IA

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Farmington, IA

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

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

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Average humidity in December
Farmington, IA

Average humidity in December - Farmington, IA
  • Average humidity in December: 78%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Farmington, IA

Average rainfall in December - Farmington, IA
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is January (1.22").

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Average rainfall days in December
Farmington, IA

Average rainfall days in December - Farmington, IA
  • Average rainfall days in December: 6.1 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (4.7 days).

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Average snowfall in December
Farmington, IA

Average snowfall in December - Farmington, IA
  • Average snowfall in December: 1.65"

The month with the highest snowfall is January (3.98").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Farmington, IA

Average snowfall days in December - Farmington, IA
  • Average snowfall days in December: 5.1 days

The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Farmington, 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 18min).

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Average sunshine days in December
Farmington, IA

Average sunshine days in December - Farmington, IA
  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in December
Farmington, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Farmington, IA

Average cloud cover in December - Farmington, IA
  • Average cloud cover in December: 49

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Farmington, IA

Average visibility in December - Farmington, 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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Farmington, Iowa, USA

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