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 transition into December involves a shift in temperature, receding from an icy 42.4°F (5.8°C) in November to a freezing cold 30.2°F (-1°C). Waterloo's temperature lowers to a mean of 19.9°F (-6.7°C) during the nights in December.Humidity
The average relative humidity in December in Waterloo is 84%.Rainfall
The month with the least rainfall is December, when the rain falls for 5.9 days and typically collects 0.87" (22mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Waterloo, Wisconsin, during December, snow falls for 11.2 days and regularly aggregates up to 2.01" (51mm) of snow. Throughout the year, in Waterloo, there are 52.3 snowfall days, and 13.31" (338mm) of snow is accumulated.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Waterloo, Wisconsin.On the first day of the month, sunrise is at 7:08 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:30 pm CST.
Sunshine
In December, the average sunshine is 3.9h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 1 in December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Waterloo in December?
What is the average humidity in December in Waterloo?
What is the driest month in Waterloo?
How much does it rain in Waterloo in December?
How many days does it snow in December in Waterloo?
What is the month with the shortest days in Waterloo?
How many hours of daylight does Waterloo have in December?
When are sunrise and sunset in December in Waterloo?
How long on average sun shines in December in Waterloo?
What is the month with the lowest UV index in Waterloo?
How high is the UV index in December in Waterloo?
Average temperature in December
Waterloo, WI
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 19.9°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (11.1°F).
Average pressure in December
Waterloo, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Waterloo, WI
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Waterloo, WI
- Average humidity in December: 84%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Waterloo, WI
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is June (2.87").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in December
Waterloo, WI
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in December
Waterloo, WI
- Average snowfall in December: 2.01"
The month with the highest snowfall is January (3.31").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Waterloo, WI
- Average snowfall days in December: 11.2 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Waterloo, WI
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Waterloo, WI
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in December
Waterloo, WI
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Waterloo, WI
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Waterloo, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Waterloo, Wisconsin, USA
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