Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The start of December is characterized by a significant decrease in the average high-temperature, moving from a cold 42.4°F (5.8°C) in November to a subzero cold 27.3°F (-2.6°C). Halfa, in December, experiences an average temperature of 16.5°F (-8.6°C) at night.Humidity
In December, the average relative humidity is 85%.Rainfall
In December, the rain falls for 4.4 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 123.7 rainfall days, and 23.66" (601mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Halfa. In Halfa, in December, during 11.1 snowfall days, 3.66" (93mm) of snow is typically accumulated. In Halfa, during the entire year, snow falls for 48.8 days and aggregates up to 19.76" (502mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:31 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:50 am and sunset at 4:52 pm CST.
Sunshine
The average sunshine in December is 4.3h.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. When the Sun is at its strongest around midday, find shade and limit exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Halfa?
What is the average humidity in December in Halfa?
How much does it rain in Halfa in December?
How much does it snow in Halfa in December?
What is the month with the shortest days in Halfa?
What is the average length of the day in December in Halfa?
When is the sunrise / sunset in December in Halfa?
How many hours of sunshine does Halfa have in December?
What is the UV index intensity in December in Halfa?
Average temperature in December
Halfa, IA
- Average high temperature in December: 27.3°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 16.5°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in December
Halfa, IA
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Halfa, IA
- Average wind speed in December: 10.7mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in December
Halfa, IA
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).
Average rainfall in December
Halfa, IA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in December
Halfa, IA
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in December
Halfa, IA
- Average snowfall in December: 3.66"
The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Halfa, IA
- Average snowfall days in December: 11.1 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Halfa, IA
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- 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: 3h and 54min).
Average sunshine days in December
Halfa, IA
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in December
Halfa, IA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Halfa, IA
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility in December
Halfa, 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).
Halfa, Iowa, USA
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