December weather forecast
Smyrna, DE

Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
°Celsius°Fahrenheit
Share

Contents

Weather in December

December in Smyrna brings in the winter chill along with festive vibes. The average high temperature dips to 45.9°F (7.7°C), marking a clear shift to winter. The snowfall increases from the November levels, adding to the festive spirit. Despite the cold, December emerges as a month full of joy and celebration in Smyrna, with Christmas and New Year's Eve adding to the charm. The snowy, picturesque landscapes are perfect backdrops for seasonal festivities.

Temperature

December's arrival in Smyrna, Delaware, coincides with a soft drop in the average high-temperature, subtly decreasing from November's fresh 54°F (12.2°C) to a chilly 45.9°F (7.7°C). In December, the nighttime temperature in Smyrna, Delaware, lowers to an average of 34.7°F (1.5°C).

Humidity

The average relative humidity in December in Smyrna is 77%.

Rainfall

In Smyrna, in December, during 11.5 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. Throughout the year, there are 169.2 rainfall days, and 34.96" (888mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In Smyrna, during December, snow falls for 2.5 days and regularly aggregates up to 0.91" (23mm) of snow. In Smyrna, during the entire year, snow falls for 14.4 days and aggregates up to 7.44" (189mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Smyrna.
On the first day of December in Smyrna, sunrise is at 7:03 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:49 pm EST.

Sunshine

In Smyrna, the average sunshine in December is 5.2h.

UV index

The months with the lowest UV index in Smyrna are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December translates into the following guidance:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
[Resources]

Frequently asked questions

What are the temperatures in Smyrna in December?

In December, in Smyrna, the average high-temperature is 45.9°F (7.7°C), and the average low-temperature is 34.7°F (1.5°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 89.6°F (32°C).

What is the average humidity in December in Smyrna?

In Smyrna, Delaware, the average relative humidity in December is 77%.

How many days does it rain in December in Smyrna?

In Smyrna, Delaware, in December, it is raining for 11.5 days, with typically 3.43" (87mm) of accumulated precipitation.

How much does it snow in Smyrna in December?

In Smyrna, Delaware, in December, snow falls for 2.5 days, with typically accumulated 0.91" (23mm) of snow.

What is the month with the shortest days in Smyrna?

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

How many hours of daylight does Smyrna have in December?

The average day length in December is 9h and 28min.

What time are sunrise and sunset in December in Smyrna?

On the first day of December in Smyrna, Delaware, sunrise is at 7:03 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:49 pm EST.

How many hours of sunshine does Smyrna have in December?

In December, the average sunshine duration is 5.2h.

What are the months with the lowest UV index in Smyrna?

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

What is the UV index reading in December in Smyrna?

The average daily maximum UV index in December in Smyrna, Delaware, is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
54°F 12.2°C
45.9°F 7.7°C
39.2°F 4°C
Average low temperature
41.2°F 5.1°C
34.7°F 1.5°C
27.9°F -2.3°C
Average pressure
30.12" 765mmHg
30.1" 765mmHg
30.09" 764mmHg
Average wind speed
8.5mph 13.7km/h
8.7mph 14km/h
9.4mph 15.1km/h
Average max. wind speed
9.3mph 15km/h
9.4mph 15.1km/h
10.1mph 16.3km/h
Average wind speed gusts
14.2mph 22.9km/h
14.3mph 23km/h
15.3mph 24.6km/h
Average humidity
74%
77%
74%
Average rainfall
2.28" 58mm
3.43" 87mm
2.13" 54mm
Average rainfall days
9.3
11.5
9.7
Average snowfall
0.28" 7mm
0.91" 23mm
2.09" 53mm
Average snowfall days
0.3
2.5
4.5
Average daylight
10h 0min
9h 3min
9h 5min
Average sunshine
5h 5min
5h 1min
5h 2min
Average sunshine days
19.5
16.8
17.2
Average UV index
3
2
2
Average cloud cover
35%
44%
43%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in December
Smyrna, DE

Average temperature in December - Smyrna, DE
  • Average high temperature in December: 45.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in December: 34.7°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

[Resources]

Average pressure in December
Smyrna, DE

Average pressure in December - Smyrna, 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
Smyrna, DE

Average wind speed in December - Smyrna, DE
  • Average wind speed in December: 8.7mph

The windiest months (with the highest average wind speed) are February and March (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).

[Resources]

Average humidity in December
Smyrna, DE

Average humidity in December - Smyrna, DE
  • Average humidity in December: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).

[Resources]

Average rainfall in December
Smyrna, DE

Average rainfall in December - Smyrna, DE
  • Average rainfall in December: 3.43"

The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is January (2.13").

[Resources]

Average rainfall days in December
Smyrna, DE

Average rainfall days in December - Smyrna, DE
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.3 days).

[Resources]

Average snowfall in December
Smyrna, DE

Average snowfall in December - Smyrna, DE
  • Average snowfall in December: 0.91"

The month with the highest snowfall is March (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Smyrna, DE

Average snowfall days in December - Smyrna, DE
  • Average snowfall days in December: 2.5 days

The month with the highest number of snowfall days is January (4.5 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
Smyrna, DE

Average daylight in December / Average sunshine in December - Smyrna, 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 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days in December
Smyrna, DE

Average sunshine days in December - Smyrna, DE
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.5 days).

[Resources]

Average UV index in December
Smyrna, DE

Average UV index in December - Smyrna, 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
Smyrna, DE

Average cloud cover in December - Smyrna, DE
  • Average cloud cover in December: 44

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

[Resources]

Average visibility in December
Smyrna, DE

Average visibility in December - Smyrna, 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]

Smyrna, 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