December weather forecast
Humeston, IA

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Weather in December

December, the first month of the winter in Humeston, is also a wintry month, with an average temperature ranging between max 35.6°F (2°C) and min 23.5°F (-4.7°C).

Temperature

December ushers in a slight temperature change, with average high-temperatures reducing from November's frosty 48.4°F (9.1°C) to a cold 35.6°F (2°C). Humeston's nights in December experience an average temperature drop to a freezing cold 23.5°F (-4.7°C).

Humidity

In Humeston, the average relative humidity in December is 79%.

Rainfall

January and December are months with the least rain when the rain falls for 5.5 days and typically aggregates up to 0.71" (18mm) of rain.

Snowfall

January through May, October through December are months with snowfall. In Humeston, during December, snow falls for 5.7 days and regularly aggregates up to 0.98" (25mm) of snow. In Humeston, during the entire year, snow falls for 28.4 days and aggregates up to 11.34" (288mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:19 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:56 pm CST.

Sunshine

In December, the average sunshine is 4.8h.

UV index

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. 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.

Frequently asked questions

How cold is December?

An average high-temperature, in December, in Humeston, is 35.6°F (2°C) and the average low-temperature is 23.5°F (-4.7°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 79%.

What is the driest month?

The months with the least rainfall in Humeston, Iowa, are January and December Rain falls for 5.5 days and accumulates 0.71" (18mm) of rain.

How many days does it rain in December?

In Humeston, in December, during 5.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

How much does it snow in December?

In Humeston, in December, snow falls for 5.7 days, with typically accumulated 0.98" (25mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 9h and 18min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:19 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 4:56 pm CST.

How long on average sun shines in December?

In Humeston, the average sunshine duration in December is 4.8h.

What is the UV index reading in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from 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
Humeston, IA

Average temperature in December - Humeston, IA
  • Average high temperature in December: 35.6°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in December: 23.5°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in December
Humeston, IA

Average pressure in December - Humeston, IA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in December
Humeston, IA

Average wind speed in December - Humeston, IA
  • Average wind speed in December: 10mph

The windiest months (with the highest average wind speed) are January and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in December
Humeston, IA

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

The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in December
Humeston, IA

Average rainfall in December - Humeston, IA
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is June (3.31").
The driest months (with the least rainfall) are January and December (0.71").

Average rainfall days in December
Humeston, IA

Average rainfall days in December - Humeston, IA
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).

Average snowfall in December
Humeston, IA

Average snowfall in December - Humeston, IA
  • Average snowfall in December: 0.98"

The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Humeston, IA

Average snowfall days in December - Humeston, IA
  • Average snowfall days in December: 5.7 days

The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

Average sunshine days in December
Humeston, IA

Average sunshine days in December - Humeston, IA
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.7 days).

Average UV index in December
Humeston, IA

Average UV index in December - Humeston, 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).

Average cloud cover in December
Humeston, IA

Average cloud cover in December - Humeston, IA
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July, August and September (Cloud cover 29).

Average visibility in December
Humeston, IA

Average visibility in December - Humeston, 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).

Humeston, Iowa, USA

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