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 is marked by a significant decrease, with the average high-temperature retreating from a wintry 39.2°F (4°C) in November to a freezing cold 24.4°F (-4.2°C). Throughout the month of December, Hammond reports a steady low-temperature average of 13.5°F (-10.3°C).Humidity
The average relative humidity in December in Hammond is 89%.Rainfall
In Hammond, in December, during 2.7 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 99.2 rainfall days, and 12.17" (309mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Hammond, during December, snow falls for 11.3 days and regularly aggregates up to 1.65" (42mm) of snow. Throughout the year, there are 54.1 snowfall days, and 9.92" (252mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:28 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:47 am and sunset at 4:38 pm CST.
Sunshine
In December, the average sunshine is 3.1h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 1 during December translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Hammond in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in Hammond in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Hammond have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Hammond, WI
- Average high temperature in December: 24.4°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 (18.9°F).
- Average low temperature in December: 13.5°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.7°F).
Average pressure in December
Hammond, WI
- Average pressure in December: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Hammond, WI
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in December
Hammond, WI
- Average humidity in December: 89%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Hammond, WI
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is June (2.17").
The driest month (with the least rainfall) is January (0.31").
Average rainfall days in December
Hammond, WI
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is June (14.8 days).
The month with the least rainy days is February (1 days).
Average snowfall in December
Hammond, WI
- Average snowfall in December: 1.65"
The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hammond, WI
- Average snowfall days in December: 11.3 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hammond, 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: 3h and 1min
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 54min).
Average sunshine days in December
Hammond, WI
- Average sunshine days in December: 20.7 days
The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in December
Hammond, 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, November and December (UV index 1).
Average cloud cover in December
Hammond, WI
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Hammond, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Hammond, Wisconsin, USA
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