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
December implies a gentle temperature shift, with average high-temperatures reducing from November's icy 37.6°F (3.1°C) to a freezing cold 23.5°F (-4.7°C). Throughout December, Hillsdale experiences a low-temperature average of 13.1°F (-10.5°C).Humidity
In Hillsdale, the average relative humidity in December is 90%.Rainfall
In Hillsdale, in December, it is raining for 3.5 days, with typically 1.46" (37mm) of accumulated precipitation. In Hillsdale, during the entire year, the rain falls for 134.8 days and collects up to 25.24" (641mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Hillsdale is December, when snow falls for 15.8 days and typically aggregates up to 6.34" (161mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of December in Hillsdale, sunrise is at 7:27 am and sunset at 4:26 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:34 pm CST.
Sunshine
In December, the average sunshine is 2.8h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 1 in December translates into these instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Hillsdale in December?
What is the average humidity in December in Hillsdale?
How many days does it rain in December in Hillsdale?
What is the snowiest month in Hillsdale?
How much does it snow in Hillsdale in December?
What is the month with the shortest days in Hillsdale?
What is the average length of the day in December in Hillsdale?
When is the sunrise / sunset in December in Hillsdale?
How long on average sun shines in December in Hillsdale?
What are the months with the lowest UV index in Hillsdale?
How high is the UV index in December in Hillsdale?
Average temperature in December
Hillsdale, WI
- Average high temperature in December: 23.5°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (17.6°F).
- Average low temperature in December: 13.1°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (5.2°F).
Average pressure in December
Hillsdale, WI
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Hillsdale, WI
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Hillsdale, 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 (76%).
Average rainfall in December
Hillsdale, WI
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days in December
Hillsdale, WI
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is June (19.5 days).
The month with the least rainy days is January (2.4 days).
Average snowfall in December
Hillsdale, WI
- Average snowfall in December: 6.34"
The month with the highest snowfall is December (6.34").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hillsdale, WI
- Average snowfall days in December: 15.8 days
The month with the highest number of snowfall days is January (17.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hillsdale, WI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Hillsdale, WI
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is October (15.3 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in December
Hillsdale, 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, February and December (UV index 1).
Average cloud cover in December
Hillsdale, WI
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Hillsdale, 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 and December (4mi).
Hillsdale, Wisconsin, USA
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