December weather forecast
Viola, DE

Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
°Celsius°Fahrenheit
Share

Contents

Weather in December

December announces the onset of winter once again in Viola, Delaware with cooling temperatures, shorter days, and increased snowfall. It may even snow in Viola during the month, as the snowfall isolation sees a rise to 0.94" (24mm) from an absence of snow in November. The festive spirits high, the city endures cold weather, brisk winds, and fewer sunshine hours. However, despite the chilly weather, downtown Viola remains vibrant with rich holiday decorations and celebrations.

Temperature

Viola's December weather features a light decline in high-temperatures, reducing from a fresh 54.5°F (12.5°C) in November to a frosty 46.4°F (8°C). Viola experiences an average temperature drop to a wintry 36°F (2.2°C) during December nights.

Humidity

In Viola, the average relative humidity in December is 76%.

Rainfall

In December, in Viola, the rain falls for 11.6 days. Throughout December, 3.07" (78mm) of precipitation is accumulated. In Viola, during the entire year, the rain falls for 167.5 days and collects up to 35.35" (898mm) of precipitation.

Snowfall

Months with snowfall in Viola are January through April, November and December. In Viola, in December, snow falls for 2.1 days, with typically accumulated 0.94" (24mm) of snow. Throughout the year, in Viola, there are 12.5 snowfall days, and 5.94" (151mm) of snow is accumulated.

Daylight

The month with the shortest days in Viola is December, with an average of 9h and 30min of daylight.
On the first day of December in Viola, sunrise is at 7:02 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:50 pm EST.

Sunshine

In Viola, the average sunshine in December is 5.1h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Viola. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 during December leads to these advisories:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
[Resources]

Frequently asked questions

What is the average December temperature in Viola?

In Viola, 46.4°F (8°C) is the average high-temperature and 36°F (2.2°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 89.6°F (32°C).

What is the average humidity in December in Viola?

In December, the average relative humidity is 76%.

How much does it rain in Viola in December?

In Viola, in December, during 11.6 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

How many days does it snow in December in Viola?

In Viola, Delaware, in December, during 2.1 snowfall days, 0.94" (24mm) of snow is typically accumulated.

What is the month with the shortest days in Viola?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

How many hours of daylight does Viola have in December?

The average day length in December is 9h and 29min.

When is the sunrise / sunset in December in Viola?

In December, on the first day of the month, sunrise is at 7:02 am and sunset at 4:40 pm. On the last day of the month, in Viola, sunrise is at 7:21 am and sunset at 4:50 pm EST.

How many hours of sunshine does Viola have in December?

In December, the average sunshine duration is 5.1h.

When is the lowest UV index in Viola?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Viola, Delaware.

What is the UV index intensity in December in Viola?

In December, the average daily maximum UV index in Viola is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
54.5°F 12.5°C
46.4°F 8°C
40.3°F 4.6°C
Average low temperature
42.3°F 5.7°C
36°F 2.2°C
28.8°F -1.8°C
Average pressure
30.12" 765mmHg
30.1" 765mmHg
30.09" 764mmHg
Average wind speed
9mph 14.5km/h
9.1mph 14.6km/h
9.9mph 15.9km/h
Average max. wind speed
9.8mph 15.8km/h
9.9mph 15.9km/h
10.6mph 17.1km/h
Average wind speed gusts
15mph 24.1km/h
15mph 24.1km/h
16mph 25.7km/h
Average humidity
74%
76%
74%
Average rainfall
2.4" 61mm
3.07" 78mm
2.13" 54mm
Average rainfall days
9
11.6
9.5
Average snowfall
0.31" 8mm
0.94" 24mm
1.93" 49mm
Average snowfall days
0.2
2.1
4.3
Average daylight
10h 1min
9h 3min
9h 5min
Average sunshine
5h 4min
5h 1min
5h 1min
Average sunshine days
19.4
16.9
17.7
Average UV index
3
2
2
Average cloud cover
36%
45%
44%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in December
Viola, DE

Average temperature in December - Viola, DE
  • Average high temperature in December: 46.4°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (40.3°F).

  • Average low temperature in December: 36°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

[Resources]

Average pressure in December
Viola, DE

Average pressure in December - Viola, DE
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

[Resources]

Average wind speed in December
Viola, DE

Average wind speed in December - Viola, DE
  • Average wind speed in December: 9.1mph

The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

[Resources]

Average humidity in December
Viola, DE

Average humidity in December - Viola, DE
  • Average humidity in December: 76%

The months with the highest relative humidity are May, August and September (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

[Resources]

Average rainfall in December
Viola, DE

Average rainfall in December - Viola, DE
  • Average rainfall in December: 3.07"

The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is January (2.13").

[Resources]

Average rainfall days in December
Viola, DE

Average rainfall days in December - Viola, DE
  • Average rainfall days in December: 11.6 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is November (9 days).

[Resources]

Average snowfall in December
Viola, DE

Average snowfall in December - Viola, DE
  • Average snowfall in December: 0.94"

The month with the highest snowfall is January (1.93").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Viola, DE

Average snowfall days in December - Viola, DE
  • Average snowfall days in December: 2.1 days

The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Viola, DE

Average daylight in December / Average sunshine in December - Viola, DE
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

[Resources]

Average sunshine days in December
Viola, DE

Average sunshine days in December - Viola, DE
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is July (9.7 days).

[Resources]

Average UV index in December
Viola, DE

Average UV index in December - Viola, DE
  • Average UV index in December: 2

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

[Resources]

Average cloud cover in December
Viola, DE

Average cloud cover in December - Viola, DE
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

[Resources]

Average visibility in December
Viola, DE

Average visibility in December - Viola, DE
  • 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).

[Resources]

Viola, Delaware, USA

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location