December weather forecastOmro, WI
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Omro, Wisconsin, with an average temperature ranging between min 18.5°F (-7.5°C) and max 28.6°F (-1.9°C).Temperature
Omro's December weather features a mild decline in high-temperatures, reducing from an icy 41.7°F (5.4°C) in November to a freezing cold 28.6°F (-1.9°C). In December, Omro experiences a temperature dip to an average of 18.5°F (-7.5°C) at night.Humidity
In December, the average relative humidity in Omro is 86%.Rainfall
In Omro, in December, it is raining for 3.6 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 104.9 rainfall days, and 12.36" (314mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Omro, in December, during 10.5 snowfall days, 1.89" (48mm) of snow is typically accumulated. In Omro, Wisconsin, during the entire year, snow falls for 47.7 days and aggregates up to 9.45" (240mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:10 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:26 pm CST.
Sunshine
The average sunshine in December is 3.6h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Omro, Wisconsin. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Omro, WI
- Average high temperature in December: 28.6°F
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in December: 18.5°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Omro, WI
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Omro, WI
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in December
Omro, WI
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Omro, WI
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in December
Omro, WI
- Average rainfall days in December: 3.6 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Omro, WI
- Average snowfall in December: 1.89"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Omro, WI
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Omro, 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 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 24min).
Average sunshine days in December
Omro, WI
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in December
Omro, 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
Omro, WI
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Omro, WI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
