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
Waterloo's weather undergoes a significant change with the arrival of December, as the average high-temperature drops from a chilly 49.1°F (9.5°C) in November to a cold 34.7°F (1.5°C). The average temperature during December nights is registered at a freezing cold 21.9°F (-5.6°C).Humidity
The average relative humidity in December is 77%.Rainfall
In Waterloo, in December, it is raining for 3.8 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 115.6 rainfall days, and 19.13" (486mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Waterloo, Nebraska, in December, during 5.7 snowfall days, 1.61" (41mm) of snow is typically accumulated. In Waterloo, during the entire year, snow falls for 26.8 days and aggregates up to 9.25" (235mm) 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 the month, sunrise is at 7:32 am and sunset at 4:56 pm. On the last day of December, sunrise is at 7:50 am and sunset at 5:06 pm CST.
Sunshine
In December, the average sunshine is 5.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 2 in December transforms into this advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Waterloo have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December in Waterloo?
Average temperature in December
Waterloo, NE
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in December: 21.9°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Waterloo, NE
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Waterloo, NE
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in December
Waterloo, NE
- Average humidity in December: 77%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (66%).
Average rainfall in December
Waterloo, NE
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Waterloo, NE
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in December
Waterloo, NE
- Average snowfall in December: 1.61"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Waterloo, NE
- Average snowfall days in December: 5.7 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Waterloo, NE
- 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: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Waterloo, NE
- Average sunshine days in December: 23 days
The month with the most sunshine days is December (23 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in December
Waterloo, NE
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Waterloo, NE
- Average cloud cover in December: 43
The month with the most cloud cover is January (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Waterloo, NE
- 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).
Waterloo, Nebraska, USA
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