December weather forecast
Keokuk, IA

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Weather in December

December in Keokuk rings in the winter season. Frigid temperatures become the norm, and Christmas celebrations light up the snowy landscapes. It's the period of shortest days and longest nights, with decreased sunshine and daylight hours. Notably, snowfall increases to 1.73" (44mm) in December from 0.39" (10mm) in November, and the city transforms into a winter wonderland.

Temperature

The average high-temperature drops in December, from November's chilly 49.5°F (9.7°C) to a wintry 37.6°F (3.1°C). December's nights in Keokuk observe an average temperature of 25.9°F (-3.4°C).

Humidity

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

Rainfall

In December, in Keokuk, the rain falls for 6.9 days. Throughout December, 1.38" (35mm) of precipitation is accumulated. Throughout the year, there are 140.6 rainfall days, and 27.72" (704mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Keokuk, in December, during 6.2 snowfall days, 1.73" (44mm) of snow is typically accumulated. In Keokuk, during the entire year, snow falls for 29.4 days and aggregates up to 11.3" (287mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Keokuk.
On the first day of December in Keokuk, sunrise is at 7:10 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:49 pm CST.

Sunshine

In December, the average sunshine in Keokuk, Iowa, is 4.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Keokuk, Iowa. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 2 during December translates into the following directions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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Frequently asked questions

Is it cold in Keokuk during December?

The average high-temperature and low-temperature in Keokuk, Iowa, during December are 37.6°F (3.1°C) and 25.9°F (-3.4°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 91.4°F (33°C).

What is the average humidity in December in Keokuk?

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

How many days does it rain in December in Keokuk?

In Keokuk, in December, during 6.9 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

How much does it snow in Keokuk in December?

In Keokuk, Iowa, during December, snow falls for 6.2 days and regularly aggregates up to 1.73" (44mm) of snow.

What is the month with the shortest days in Keokuk?

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

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

In December, the average day length is 9h and 21min.

What time are sunrise and sunset in December in Keokuk?

In December, on the first day of the month, sunrise is at 7:10 am and sunset at 4:39 pm. On the last day of the month, in Keokuk, Iowa, sunrise is at 7:28 am and sunset at 4:49 pm CST.

How long on average sun shines in December in Keokuk?

The average sunshine duration in December is 4.8h.

When is the lowest UV index in Keokuk?

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

What is the UV index reading in December in Keokuk?

The average daily maximum UV index in December 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
Keokuk, IA

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

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in December: 25.9°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 (19.2°F).

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Average pressure in December
Keokuk, IA

Average pressure in December - Keokuk, 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
Keokuk, IA

Average wind speed in December - Keokuk, IA
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in December
Keokuk, IA

Average humidity in December - Keokuk, 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 (70%).

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Average rainfall in December
Keokuk, IA

Average rainfall in December - Keokuk, IA
  • Average rainfall in December: 1.38"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.34").

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Average rainfall days in December
Keokuk, IA

Average rainfall days in December - Keokuk, IA
  • Average rainfall days in December: 6.9 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in December
Keokuk, IA

Average snowfall in December - Keokuk, IA
  • Average snowfall in December: 1.73"

The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Keokuk, IA

Average snowfall days in December - Keokuk, IA
  • Average snowfall days in December: 6.2 days

The month with the highest number of snowfall days is January (9.8 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
Keokuk, IA

Average daylight in December / Average sunshine in December - Keokuk, 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
Keokuk, IA

Average sunshine days in December - Keokuk, IA
  • Average sunshine days in December: 18.6 days

The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in December
Keokuk, IA

Average UV index in December - Keokuk, 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
Keokuk, IA

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

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

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Average visibility in December
Keokuk, IA

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

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