December weather forecastSylvania, OH
December
Weather in December
December, the first month of the winter in Sylvania, is still a cold month, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 36.3°F (2.4°C).Temperature
The start of December signals a decrease in the average high-temperature, transitioning from a frosty 46.9°F (8.3°C) in November to an icy 36.3°F (2.4°C). The nights of December anticipate an average low-temperature of 27°F (-2.8°C).Humidity
In Sylvania, the average relative humidity in December is 82%.Rainfall
December is the month with the least rainfall. Rain falls for 7.6 days and accumulates 0.63" (16mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Sylvania, in December, snow falls for 8.5 days, with typically accumulated 0.98" (25mm) of snow. In Sylvania, during the entire year, snow falls for 39.8 days and aggregates up to 6.77" (172mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Sylvania, Ohio.On the first day of December, sunrise is at 7:43 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 8:01 am and sunset at 5:14 pm EST.
Sunshine
In Sylvania, Ohio, the average sunshine in December is 3.7h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, a regular UV index of 1 translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sylvania, OH
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Sylvania, OH
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Sylvania, OH
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Sylvania, OH
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Sylvania, OH
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is June (1.81").
The driest month (with the least rainfall) is December (0.63").
Average rainfall days in December
Sylvania, OH
- Average rainfall days in December: 7.6 days
The months with the highest number of rainy days are May and June (15.6 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Sylvania, OH
- Average snowfall in December: 0.98"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Sylvania, OH
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sylvania, OH
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Sylvania, OH
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Sylvania, OH
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Sylvania, OH
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in December
Sylvania, OH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
