December weather forecast
Curlew, IA

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Weather in December

December, the first month of the winter in Curlew, is still a freezing cold month, with an average temperature varying between 28°F (-2.2°C) and 17.4°F (-8.1°C).

Temperature

The shift from November to December sees a distinct decrease in the average high-temperature, dropping from a chilly 43.2°F (6.2°C) to a freezing cold 28°F (-2.2°C). Curlew's nighttime temperature in December drops to an average of 17.4°F (-8.1°C).

Humidity

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

Rainfall

In December, the rain falls for 4.4 days. Throughout December, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 138 rainfall days, and 26.77" (680mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 11.9 days. Throughout December, 3.74" (95mm) of snow is accumulated. Throughout the year, there are 51.6 snowfall days, and 23.03" (585mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 7:31 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:54 pm CST.

Sunshine

The average sunshine in December is 4.4h.

UV index

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 rays for ordinary individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

In Curlew, 28°F (-2.2°C) is the average high-temperature and 17.4°F (-8.1°C) is the average low-temperature during December. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in July is appraised at 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 84%.

How many days does it rain in December?

In December, the rain falls for 4.4 days. Throughout December, 1.5" (38mm) of precipitation is accumulated.

How many days does it snow in December?

In Curlew, during December, snow falls for 11.9 days and regularly aggregates up to 3.74" (95mm) of snow.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 9h and 4min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:31 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:54 pm CST.

How long on average sun shines in December?

In Curlew, the average sunshine duration in December is 4.4h.

What is the UV index intensity in December?

The average daily maximum UV index in December in Curlew is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Curlew, IA

Average temperature in December - Curlew, IA
  • Average high temperature in December: 28°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (23.2°F).

  • Average low temperature in December: 17.4°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 (10.6°F).

Average pressure in December
Curlew, IA

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

Average wind speed in December
Curlew, IA

Average wind speed in December - Curlew, IA
  • Average wind speed in December: 10.6mph

The windiest months (with the highest average wind speed) are January and April (11mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in December
Curlew, IA

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

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (68%).

Average rainfall in December
Curlew, IA

Average rainfall in December - Curlew, IA
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is June (4.25").
The driest month (with the least rainfall) is January (0.98").

Average rainfall days in December
Curlew, IA

Average rainfall days in December - Curlew, IA
  • Average rainfall days in December: 4.4 days

The month with the highest number of rainy days is June (20 days).
The month with the least rainy days is February (3.4 days).

Average snowfall in December
Curlew, IA

Average snowfall in December - Curlew, IA
  • Average snowfall in December: 3.74"

The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Curlew, IA

Average snowfall days in December - Curlew, IA
  • Average snowfall days in December: 11.9 days

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Curlew, 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in December
Curlew, IA

Average sunshine days in December - Curlew, IA
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (8.1 days).

Average UV index in December
Curlew, IA

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

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in December
Curlew, IA

Average cloud cover in December - Curlew, IA
  • Average cloud cover in December: 55

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).

Average visibility in December
Curlew, IA

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

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

Curlew, Iowa, USA

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