December weather forecastSaint Rosa, OH
December
Weather in December
The first month of the winter, December, is still a cold month in Saint Rosa, Ohio, with an average temperature ranging between min 27.5°F (-2.5°C) and max 37.8°F (3.2°C).Temperature
With December's arrival, Saint Rosa sees a decrease in average high-temperatures, moving from a chilly 48.4°F (9.1°C) in November to a wintry 37.8°F (3.2°C). During December nights, Saint Rosa witnesses a consistent average temperature of 27.5°F (-2.5°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In Saint Rosa, in December, during 8.8 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. In Saint Rosa, during the entire year, the rain falls for 147.5 days and collects up to 21.3" (541mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Saint Rosa, in December, snow falls for 6.3 days, with typically accumulated 1.14" (29mm) of snow. Throughout the year, there are 30.8 snowfall days, and 6.81" (173mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:42 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 5:21 pm EST.
Sunshine
In December, the average sunshine is 3.9h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 suggests this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Saint Rosa, OH
- Average high temperature in December: 37.8°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Saint Rosa, OH
- Average pressure in December: 30.11"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Saint Rosa, OH
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Saint Rosa, OH
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Saint Rosa, OH
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in December
Saint Rosa, OH
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Saint Rosa, OH
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (2.01").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Saint Rosa, OH
- Average snowfall days in December: 6.3 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint Rosa, OH
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Saint Rosa, OH
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in December
Saint Rosa, OH
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Saint Rosa, OH
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Saint Rosa, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).
