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
Welcoming December, Hayward observes a shift in the average high-temperature, falling from November's wintry 36.7°F (2.6°C) to a freezing cold 23.4°F (-4.8°C). During the nights in December, Hayward observes an average low-temperature of 12.6°F (-10.8°C).Humidity
The average relative humidity in December is 90%.Rainfall
In Hayward, during December, the rain falls for 4 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Hayward, during the entire year, the rain falls for 114.4 days and collects up to 20.79" (528mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Hayward. December is the month with the most snowfall. Snow falls for 16.6 days and accumulates 7.17" (182mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 7:28 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:47 am and sunset at 4:30 pm CST.
Sunshine
In December, the average sunshine in Hayward is 2.4h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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?
When does it snow the most?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Hayward have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Hayward, WI
- Average high temperature in December: 23.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (17.4°F).
- Average low temperature in December: 12.6°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in December
Hayward, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Hayward, WI
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Hayward, WI
- Average humidity in December: 90%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Hayward, WI
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in December
Hayward, WI
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (2.3 days).
Average snowfall in December
Hayward, WI
- Average snowfall in December: 7.17"
The month with the highest snowfall is December (7.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hayward, WI
- Average snowfall days in December: 16.6 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hayward, WI
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 2h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in December
Hayward, WI
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is September (16.2 days).
The month with the least sunshine days is April (10.9 days).
Average UV index in December
Hayward, 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
Hayward, WI
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Hayward, WI
- Average visibility in December: 4mi
The months with the highest visibility are May, June and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Hayward, Wisconsin, USA
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