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
As Knierim steps into December, a marked temperature drop is observed, with the average high-temperature reducing from November's frosty 44.8°F (7.1°C) to a freezing cold 30°F (-1.1°C). Nighttime temperatures hover around an average low of 19.4°F (-7°C) in December.Humidity
The average relative humidity in December is 82%.Rainfall
In Knierim, during December, the rain falls for 2.5 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Knierim, during the entire year, the rain falls for 84.6 days and collects up to 7.91" (201mm) of precipitation.Snowfall
Months with snowfall in Knierim, Iowa, are January through April, October through December. In December, in Knierim, Iowa, it is snowing for 5.5 days. Throughout December, 0.31" (8mm) of snow is accumulated. In Knierim, during the entire year, snow falls for 29.4 days and aggregates up to 3.62" (92mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:28 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 4:55 pm CST.
Sunshine
In Knierim, the average sunshine in December is 4.6h.UV index
In Knierim, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
How cold is December in Knierim?
What is the average humidity in December in Knierim?
How much does it rain in Knierim in December?
How much does it snow in Knierim in December?
What is the month with the shortest days in Knierim?
What is the average length of the day in December in Knierim?
When are sunrise and sunset in December in Knierim?
How many hours of sunshine does Knierim have in December?
What is the UV index intensity in December in Knierim?
Average temperature in December
Knierim, IA
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 19.4°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
Knierim, 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
Knierim, IA
- Average wind speed in December: 10.4mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in December
Knierim, IA
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (68%).
Average rainfall in December
Knierim, IA
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in December
Knierim, IA
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (12 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in December
Knierim, IA
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Knierim, IA
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Knierim, IA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 4min
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
Knierim, IA
- Average sunshine days in December: 24.3 days
The month with the most sunshine days is December (24.3 days).
The month with the least sunshine days is June (15.5 days).
Average UV index in December
Knierim, 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
Knierim, IA
- Average cloud cover in December: 53
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
Knierim, IA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Knierim, Iowa, USA
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