December weather forecast
Delta, MO

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Weather in December

The first month of the winter, December, is still a chilly month in Delta, Missouri, with an average temperature varying between 45.5°F (7.5°C) and 33.1°F (0.6°C).

Temperature

The onset of December entails a temperature shift, as the average high-temperature decreases from a fresh 54.7°F (12.6°C) in November to a frosty 45.5°F (7.5°C). December nights cool down to an average low-temperature of 33.1°F (0.6°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Delta, in December, it is raining for 10.8 days, with typically 2.44" (62mm) of accumulated precipitation. In Delta, during the entire year, the rain falls for 158.6 days and collects up to 35.71" (907mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Delta, in December, during 1.6 snowfall days, 0.67" (17mm) of snow is typically accumulated. Throughout the year, there are 11.2 snowfall days, and 4.88" (124mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 42min of daylight.
On the first day of December, sunrise is at 6:54 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:51 pm CST.

Sunshine

The months with the least sunshine are February and December, with an average of 4.8h of sunshine.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.

Frequently asked questions

What are the temperatures in December?

In December, in Delta, the average high-temperature is 45.5°F (7.5°C), and the average low-temperature is 33.1°F (0.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in September is calculated to be 84.2°F (29°C).

What is the average humidity in December?

In Delta, Missouri, the average relative humidity in December is 77%.

How much does it rain in December?

In Delta, in December, it is raining for 10.8 days, with typically 2.44" (62mm) of accumulated precipitation.

How much does it snow in December?

In Delta, in December, during 1.6 snowfall days, 0.67" (17mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 42min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length is 9h and 39min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:51 pm CST.

What are the months with the least sunshine?

The months with the least sunshine are February and December, with an average of 4.8h of sunshine.

How long on average sun shines in December?

In Delta, the average sunshine duration in December is 4.8h.

When is the lowest UV index?

January, February 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 December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Delta, MO

Average temperature in December - Delta, MO
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in December: 33.1°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure in December
Delta, MO

Average pressure in December - Delta, MO
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Delta, MO

Average wind speed in December - Delta, MO
  • Average wind speed in December: 8.6mph

The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in December
Delta, MO

Average humidity in December - Delta, MO
  • Average humidity in December: 77%

The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).

Average rainfall in December
Delta, MO

Average rainfall in December - Delta, MO
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is April (4.33").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in December
Delta, MO

Average rainfall days in December - Delta, MO
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.8 days).

Average snowfall in December
Delta, MO

Average snowfall in December - Delta, MO
  • Average snowfall in December: 0.67"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Delta, MO

Average snowfall days in December - Delta, MO
  • Average snowfall days in December: 1.6 days

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Delta, MO

Average daylight in December / Average sunshine in December - Delta, MO
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).

Average sunshine days in December
Delta, MO

Average sunshine days in December - Delta, MO
  • Average sunshine days in December: 18.1 days

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (11.9 days).

Average UV index in December
Delta, MO

Average UV index in December - Delta, MO
  • 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, February and December (UV index 2).

Average cloud cover in December
Delta, MO

Average cloud cover in December - Delta, MO
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, August and September (Cloud cover 27).

Average visibility in December
Delta, MO

Average visibility in December - Delta, MO
  • 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).

Delta, Missouri, USA

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