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
With December's onset, the weather shows a temperature decrease, transitioning from a frosty 44.8°F (7.1°C) in November to a wintry 34.5°F (1.4°C). A consistent average low-temperature of 25.7°F (-3.5°C), with a minor variance from the daytime highs, is noted during the nights of December.Humidity
In December, the average relative humidity is 85%.Rainfall
In Omro, during December, the rain falls for 5.5 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Omro, New York, during the entire year, the rain falls for 115.7 days and collects up to 11.06" (281mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Omro, in December, during 12.2 snowfall days, 1.85" (47mm) of snow is typically accumulated. In Omro, during the entire year, snow falls for 61.9 days and aggregates up to 12.95" (329mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:17 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:36 am and sunset at 4:41 pm EST.
Sunshine
The average sunshine in December is 3h.UV index
The months with the lowest UV index in Omro are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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 many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Omro have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Omro have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Omro, NY
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in December
Omro, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Omro, NY
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Omro, NY
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in December
Omro, NY
- Average rainfall in December: 0.75"
The wettest months (with the highest rainfall) are May and June (1.22").
The driest months (with the least rainfall) are January and September (0.67").
Average rainfall days in December
Omro, NY
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (3.9 days).
Average snowfall in December
Omro, NY
- Average snowfall in December: 1.85"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Omro, NY
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Omro, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
Omro, NY
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is February (12.7 days).
Average UV index in December
Omro, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Omro, NY
- Average cloud cover in December: 70
The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Omro, NY
- Average visibility in December: 6mi
The months with the highest visibility are April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March and July (5mi).
Omro, New York, USA
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