December Weather forecast - Winter forecast

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

The Maimi and Mad rivers converge to flow through Dayton city, Ohio

Weather in December

The first month of the winter, December, is still a cold month in Dayton, Ohio, with an average temperature ranging between max 39.2°F (4°C) and min 28.9°F (-1.7°C).

Temperature

In December, the average high-temperature decreases from a chilly 49.1°F (9.5°C) in November to a wintry 39.2°F (4°C). In Dayton, the average low-temperature is 28.9°F (-1.7°C).

Humidity

January, February and December, with an average relative humidity of 82%, are the most humid months.

Rainfall

In Dayton, during December, the rain falls for 9.4 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, there are 149.5 rainfall days, and 23.9" (607mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In December, in Dayton, it is snowing for 5.9 days. Throughout December, 1.38" (35mm) of snow is accumulated. In Dayton, during the entire year, snow falls for 26.5 days and aggregates up to 7.68" (195mm) of snow.

Daylight

With an average of 9h and 25min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:38 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 5:21 pm EST.

Sunshine

In December, the average sunshine is 4.1h.

UV index

The months with the lowest UV index in Dayton are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

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FAQ

What is the temperature in December in Dayton?

In Dayton, in December, the average high-temperature is 39.2°F (4°C), and the average low-temperature is 28.9°F (-1.7°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in July is appraised at 87.8°F (31°C).

What is the most humid month in Dayton?

The months with the highest humidity in Dayton are January, February and December, with an average relative humidity of 82%.

What is the average humidity in December in Dayton?

In December, the average relative humidity in Dayton is 82%.

How much does it rain in Dayton in December?

In Dayton, during December, the rain falls for 9.4 days and regularly aggregates up to 1.81" (46mm) of precipitation.

How much does it snow in Dayton in December?

In December, in Dayton, Ohio, it is snowing for 5.9 days. Throughout December, 1.38" (35mm) of snow is accumulated.

What is the month with the shortest days in Dayton?

The month with the shortest days in Dayton is December, with an average of 9h and 25min of daylight.

What is the average length of the day in December in Dayton?

The average day length in December in Dayton is 9h and 25min.

When are sunrise and sunset in December in Dayton?

On the first day of December in Dayton, Ohio, sunrise is at 7:38 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 5:21 pm EST.

How long on average sun shines in December in Dayton?

In Dayton, the average sunshine duration in December is 4.1h.

What is the month with the lowest UV index in Dayton?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December in Dayton?

The average daily maximum UV index in December in Dayton is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

49.1°F 9.5°C

39.2°F 4°C

33.6°F 0.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.5mph 15.3km/h

9.8mph 15.8km/h

10.6mph 17.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

18.9

16.7

16.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Dayton, OH

Average high temperature in December: 39.2°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (33.6°F).

Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).

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Average pressure in December
Dayton, OH

Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Dayton, OH

Average wind speed in December: 9.2mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in December
Dayton, OH

Average humidity in December: 82%

The months with the highest relative humidity are January, February and December (82%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in December
Dayton, OH

Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are September and November (1.5").

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Average rainfall days in December
Dayton, OH

Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (7.5 days).

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Average snowfall in December
Dayton, OH

Average snowfall in December: 1.38"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Dayton, OH

Average snowfall days in December: 5.9 days

The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Dayton, OH

Average daylight in December: 9h and 25min

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

Average sunshine in December: 4h and 6min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in December
Dayton, OH

Average sunshine days in December: 16.7 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (9.8 days).

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Average UV index in December
Dayton, OH

Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Dayton, OH

Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
Dayton, 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).

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December weather forecast
Dayton, OH

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