December weather forecast
Geneva, IA

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Weather in December

December, the first month of the winter in Geneva, is still a freezing cold month, with an average temperature fluctuating between 19°F (-7.2°C) and 29.7°F (-1.3°C).

Temperature

Start of December brings a shift in the average high-temperature, falling from November's frosty 43.5°F (6.4°C) to a freezing cold 29.7°F (-1.3°C). Nighttime temperatures hover around an average low of 19°F (-7.2°C) in December.

Humidity

In Geneva, the average relative humidity in December is 84%.

Rainfall

In December, the rain falls for 5.8 days. Throughout December, 1.61" (41mm) of precipitation is accumulated. Throughout the year, there are 146.2 rainfall days, and 29.69" (754mm) of precipitation is accumulated.

Snowfall

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

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:23 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:42 am and sunset at 4:49 pm CST.

Sunshine

In December, the average sunshine is 4.3h.

UV index

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests this advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.

Frequently asked questions

How cold is it in December?

The average high-temperature, in December, in Geneva, is 29.7°F (-1.3°C), while the average low-temperature is 19°F (-7.2°C).

What is the average humidity in December?

In Geneva, the average relative humidity in December is 84%.

How much does it rain in December?

In Geneva, during December, the rain falls for 5.8 days and regularly aggregates up to 1.61" (41mm) of precipitation.

How much does it snow in December?

In December, it is snowing for 13 days. Throughout December, 4.13" (105mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 6min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In Geneva, the average day length in December is 9h and 7min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:23 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:49 pm CST.

How long on average sun shines in December?

In Geneva, the average sunshine duration in December is 4.3h.

How high is the UV index in December?

In Geneva, 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
Geneva, IA

Average temperature in December - Geneva, 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).

Average pressure in December
Geneva, IA

Average pressure in December - Geneva, 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).

Average wind speed in December
Geneva, IA

Average wind speed in December - Geneva, 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).

Average humidity in December
Geneva, IA

Average humidity in December - Geneva, 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%).

Average rainfall in December
Geneva, IA

Average rainfall in December - Geneva, 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").

Average rainfall days in December
Geneva, IA

Average rainfall days in December - Geneva, 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).

Average snowfall in December
Geneva, IA

Average snowfall in December - Geneva, 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").

Average snowfall days in December
Geneva, IA

Average snowfall days in December - Geneva, 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).

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

Average daylight in December / Average sunshine in December - Geneva, 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).

Average sunshine days in December
Geneva, IA

Average sunshine days in December - Geneva, 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).

Average UV index in December
Geneva, IA

Average UV index in December - Geneva, 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).

Average cloud cover in December
Geneva, IA

Average cloud cover in December - Geneva, 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).

Average visibility in December
Geneva, IA

Average visibility in December - Geneva, 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).

Geneva, Iowa, USA

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