December weather forecast
Fairfield, IA

Weather in December

The first month of the winter, December, is still a cold month in Fairfield, Iowa, with an average temperature ranging between min 24.1°F (-4.4°C) and max 35.2°F (1.8°C).

Temperature

In Fairfield, the average high-temperature in December decreases from a chilly 47.7°F (8.7°C) in November to a cold 35.2°F (1.8°C). The average low-temperature, in Fairfield, Iowa, is 24.1°F (-4.4°C).

Humidity

The average relative humidity in December is 79%.

Rainfall

The months with the least rainfall in Fairfield, Iowa, are January and December Rain falls for 7.1 days and accumulates 1.18" (30mm) of rain.

Snowfall

January through April, October through December are months with snowfall. In Fairfield, in December, during 6.5 snowfall days, 1.65" (42mm) of snow is typically accumulated. In Fairfield, Iowa, during the entire year, snow falls for 32.1 days and aggregates up to 14.33" (364mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 17min of daylight.
On the first day of December in Fairfield, sunrise is at 7:13 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:49 pm CST.

Sunshine

In December, the average sunshine is 4.5h.

UV index

In Fairfield, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The average daily UV index of 2 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Fairfield?

The average high-temperature, in December, is 35.2°F (1.8°C), while the average low-temperature is 24.1°F (-4.4°C). in August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in December in Fairfield?

The average relative humidity in December is 79%.

What is the driest month in Fairfield?

January and December are months with the least rain when the rain falls for 7.1 days and typically aggregates up to 1.18" (30mm) of rain.

How many days does it rain in December in Fairfield?

In December, in Fairfield, Iowa, the rain falls for 7.1 days. Throughout December, 1.18" (30mm) of precipitation is accumulated.

How much does it snow in Fairfield in December?

In Fairfield, in December, snow falls for 6.5 days, with typically accumulated 1.65" (42mm) of snow.

What is the month with the shortest days in Fairfield?

December has the shortest days of the year, with an average of 9h and 17min of daylight.

How many hours of daylight does Fairfield have in December?

The average day length in December in Fairfield is 9h and 17min.

When is the sunrise / sunset in December in Fairfield?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:49 pm CST.

How long on average sun shines in December in Fairfield?

The average sunshine duration in December is 4.5h.

What is the UV index intensity in December in Fairfield?

In Fairfield, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Fairfield, IA

Average temperature in December - Fairfield, IA
  • Average high temperature in December: 35.2°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in December: 24.1°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

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Average pressure in December
Fairfield, IA

Average pressure in December - Fairfield, IA
  • Average pressure in December: 30.11"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
Fairfield, IA

Average wind speed in December - Fairfield, IA
  • Average wind speed in December: 10.1mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average humidity in December
Fairfield, IA

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

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Fairfield, IA

Average rainfall in December - Fairfield, IA
  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and December (1.18").

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Average rainfall days in December
Fairfield, IA

Average rainfall days in December - Fairfield, IA
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall in December
Fairfield, IA

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

The months with the highest snowfall are January and February (4.33").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Fairfield, IA

Average snowfall days in December - Fairfield, IA
  • Average snowfall days in December: 6.5 days

The month with the highest number of snowfall days is January (10.3 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
Fairfield, IA

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in December
Fairfield, IA

Average sunshine days in December - Fairfield, IA
  • Average sunshine days in December: 18 days

The months with the most sunshine days are October and November (18.8 days).
The month with the least sunshine days is May (11 days).

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Average UV index in December
Fairfield, IA

Average UV index in December - Fairfield, 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
Fairfield, IA

Average cloud cover in December - Fairfield, IA
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in December
Fairfield, IA

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

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

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