December weather forecast
Chapin, IA

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Weather in December

The first month of the winter, December, is also a subzero cold month in Chapin, Iowa, with temperature in the range of an average low of 19°F (-7.2°C) and an average high of 29.7°F (-1.3°C).

Temperature

The onset of December entails a temperature shift, as the average high-temperature decreases from a frosty 43.5°F (6.4°C) in November to a freezing cold 29.7°F (-1.3°C). In the month of December, Chapin witnesses a consistent average low-temperature of 19°F (-7.2°C).

Humidity

The average relative humidity in December in Chapin is 84%.

Rainfall

In Chapin, in December, it is raining for 5.8 days, with typically 1.61" (41mm) of accumulated precipitation. In Chapin, Iowa, during the entire year, the rain falls for 146.2 days and collects up to 29.69" (754mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Chapin. In December, it is snowing for 13 days. Throughout December, 4.13" (105mm) of snow is accumulated. In Chapin, Iowa, during the entire year, snow falls for 56 days and aggregates up to 24.45" (621mm) of snow.

Daylight

The month with the shortest days in Chapin is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:24 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:48 pm CST.

Sunshine

The average sunshine in December is 4.3h.

UV index

In December, the average daily maximum UV index in Chapin is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

How cold is it in Chapin in December?

During December, Chapin experiences an average high-temperature of 29.7°F (-1.3°C) and a low-temperature of 19°F (-7.2°C).

What is the average humidity in December in Chapin?

The average relative humidity in December is 84%.

How much does it rain in Chapin in December?

In Chapin, Iowa, in December, during 5.8 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

How much does it snow in Chapin in December?

In Chapin, Iowa, in December, during 13 snowfall days, 4.13" (105mm) of snow is typically accumulated.

What is the month with the shortest days in Chapin?

December has the shortest days of the year in Chapin, Iowa, with an average of 9h and 6min of daylight.

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

In Chapin, the average day length in December is 9h and 5min.

What time are sunrise and sunset in December in Chapin?

In December, on the first day of the month, sunrise is at 7:24 am and sunset at 4:39 pm. On the last day of the month, in Chapin, Iowa, sunrise is at 7:43 am and sunset at 4:48 pm CST.

How many hours of sunshine does Chapin have in December?

In December, the average sunshine duration is 4.3h.

What is the UV index intensity in December in Chapin?

In Chapin, the average daily maximum UV index in December is 2. A UV Index value 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
Chapin, IA

Average temperature in December - Chapin, IA
  • Average high temperature in December: 29.7°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in December: 19°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).

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Average pressure in December
Chapin, IA

Average pressure in December - Chapin, 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 (29.88"Hg).

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Average wind speed in December
Chapin, IA

Average wind speed in December - Chapin, IA
  • Average wind speed in December: 10.4mph

The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).

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Average humidity in December
Chapin, IA

Average humidity in December - Chapin, IA
  • Average humidity in December: 84%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in December
Chapin, IA

Average rainfall in December - Chapin, IA
  • Average rainfall in December: 1.61"

The wettest month (with the highest rainfall) is June (4.69").
The driest month (with the least rainfall) is January (1.1").

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Average rainfall days in December
Chapin, IA

Average rainfall days in December - Chapin, IA
  • Average rainfall days in December: 5.8 days

The month with the highest number of rainy days is June (20.2 days).
The month with the least rainy days is February (4 days).

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Average snowfall in December
Chapin, IA

Average snowfall in December - Chapin, IA
  • Average snowfall in December: 4.13"

The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Chapin, IA

Average snowfall days in December - Chapin, IA
  • Average snowfall days in December: 13 days

The month with the highest number of snowfall days is January (13.3 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
Chapin, IA

Average daylight in December / Average sunshine in December - Chapin, IA
  • Average daylight in December: 9h and 1min

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

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in December
Chapin, IA

Average sunshine days in December - Chapin, IA
  • Average sunshine days in December: 16 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (7.8 days).

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Average UV index in December
Chapin, IA

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

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in December
Chapin, IA

Average cloud cover in December - Chapin, IA
  • Average cloud cover in December: 56

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in December
Chapin, IA

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

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

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Chapin, Iowa, USA

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