December weather forecast
Keokuk, IA

Weather in December

The first month of the winter, December, is still a cold month in Keokuk, Iowa, with temperature in the range of an average high of 37.6°F (3.1°C) and an average low of 25.9°F (-3.4°C).

Temperature

In December, the average high-temperature decreases, from a frosty 49.5°F (9.7°C) in November, to a cold 37.6°F (3.1°C). The average low-temperature, in Keokuk, is 25.9°F (-3.4°C).

Humidity

In Keokuk, the average relative humidity is 78%.

Rainfall

In December, in Keokuk, the rain falls for 6.9 days. Throughout December, 1.38" (35mm) of precipitation is accumulated. In Keokuk, Iowa, during the entire year, the rain falls for 140.6 days and collects up to 27.72" (704mm) of precipitation.

Snowfall

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

Daylight

The month with the shortest days in Keokuk, Iowa, is December, with an average of 9.3h of daylight.

Sunshine

In Keokuk, the average sunshine 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. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in December in Keokuk?

In December, the average relative humidity is 78%.

How much does it rain in Keokuk in December?

In Keokuk, during December, the rain falls for 6.9 days and regularly aggregates up to 1.38" (35mm) of precipitation.

How much does it snow in Keokuk in December?

In December, in Keokuk, it is snowing for 6.2 days. Throughout December, 1.73" (44mm) of snow is accumulated.

What is the month with the shortest days in Keokuk?

The month with the shortest days in Keokuk is December, with an average of 9.3h of daylight.

How many hours of daylight does Keokuk have in December?

In Keokuk, Iowa, the average length of the day in December is 9.3h.

How long on average sun shines in December in Keokuk?

The average sunshine in December in Keokuk, Iowa, is 4.8h.

When is the lowest UV index in Keokuk?

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

How high is the UV index in December in Keokuk?

In December, the average daily maximum UV index in Keokuk, Iowa, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to the UV radiation.

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"

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

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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%

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").
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).
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: 9.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 4.8h

The month with the most sunshine is July (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 4.3h).

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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

Months with the highest UV index are June, July and August (UV index 6).
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).
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

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

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