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 signals a decrease in the average high-temperature, transitioning from a frosty 43°F (6.1°C) in November to a subzero cold 31.5°F (-0.3°C). Port Washington maintains an average of approximately a still freezing cold 23.7°F (-4.6°C) during December nights, with only a minimal decrease from the daytime temperature.Humidity
In December, the average relative humidity is 83%.Rainfall
In Port Washington, in December, it is raining for 5.7 days, with typically 1.1" (28mm) of accumulated precipitation. In Port Washington, during the entire year, the rain falls for 134.9 days and collects up to 23.94" (608mm) of precipitation.Snowfall
Months with snowfall in Port Washington, Wisconsin, are January through April, October through December. In Port Washington, during December, snow falls for 10.9 days and regularly aggregates up to 3.03" (77mm) of snow. In Port Washington, Wisconsin, during the entire year, snow falls for 51.1 days and aggregates up to 13.66" (347mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:16 pm. On the last day of December, in Port Washington, sunrise is at 7:23 am and sunset at 4:25 pm CST.
Sunshine
In Port Washington, the average sunshine in December is 3.9h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Port Washington, Wisconsin. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
How cold is it in Port Washington in December?
What is the average humidity in December in Port Washington?
How much does it rain in Port Washington in December?
How many days does it snow in December in Port Washington?
What is the month with the shortest days in Port Washington?
How many hours of daylight does Port Washington have in December?
When is the sunrise / sunset in December in Port Washington?
How many hours of sunshine does Port Washington have in December?
When is the lowest UV index in Port Washington?
How high is the UV index in December in Port Washington?
Average temperature in December
Port Washington, WI
- Average high temperature in December: 31.5°F
The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in December: 23.7°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 (15.8°F).
Average pressure in December
Port Washington, WI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Port Washington, WI
- Average wind speed in December: 11.4mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in December
Port Washington, WI
- Average humidity in December: 83%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April, October and November (77%).
Average rainfall in December
Port Washington, WI
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in December
Port Washington, WI
- Average rainfall days in December: 5.7 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Port Washington, WI
- Average snowfall in December: 3.03"
The month with the highest snowfall is January (3.43").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Port Washington, WI
- Average snowfall days in December: 10.9 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Port Washington, WI
- 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: 3h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Port Washington, WI
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is December (16.4 days).
The month with the least sunshine days is July (11.6 days).
Average UV index in December
Port Washington, WI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Port Washington, WI
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Port Washington, WI
- 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).
Port Washington, Wisconsin, USA
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