December weather forecast
Cortland, NE

Share

Weather in December

The first month of the winter, December, is also an icy month in Cortland, Nebraska, with an average temperature fluctuating between 23°F (-5°C) and 36.9°F (2.7°C).

Temperature

December's arrival comes with a decrease in the average high-temperature, moving from a fresh 50.9°F (10.5°C) in November to an icy 36.9°F (2.7°C). Cortland experiences a mean temperature of 23°F (-5°C) during December nights.

Humidity

In December, the average relative humidity in Cortland, Nebraska, is 74%.

Rainfall

In Cortland, Nebraska, in December, during 3.5 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, in Cortland, there are 115.2 rainfall days, and 22.56" (573mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Cortland are January through May, October through December. In December, it is snowing for 4.5 days. Throughout December, 1.73" (44mm) of snow is accumulated. Throughout the year, in Cortland, Nebraska, there are 22.2 snowfall days, and 10.71" (272mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:31 am and sunset at 5:00 pm. On the last day of December, in Cortland, Nebraska, sunrise is at 7:50 am and sunset at 5:10 pm CST.

Sunshine

The average sunshine in December is 5.4h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
[Resources]

Frequently asked questions

How cold is December in Cortland?

An average high-temperature, in December, in Cortland, is 36.9°F (2.7°C) and the average low-temperature is 23°F (-5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 93.2°F (34°C).

What is the average humidity in December in Cortland?

In Cortland, the average relative humidity in December is 74%.

How much does it rain in Cortland in December?

In December, the rain falls for 3.5 days. Throughout December, 1.42" (36mm) of precipitation is accumulated.

How much does it snow in Cortland in December?

In Cortland, during December, snow falls for 4.5 days and regularly aggregates up to 1.73" (44mm) of snow.

What is the month with the shortest days in Cortland?

The month with the shortest days in Cortland, Nebraska, is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Cortland have in December?

The average day length in December in Cortland, Nebraska, is 9h and 20min.

When are sunrise and sunset in December in Cortland?

On the first day of December, sunrise is at 7:31 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 5:10 pm CST.

How many hours of sunshine does Cortland have in December?

In December, the average sunshine duration in Cortland is 5.4h.

When is the lowest UV index in Cortland?

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

What is the UV index reading in December in Cortland?

The average daily maximum UV index in December in Cortland, Nebraska, is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
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
Cortland, NE

Average temperature in December - Cortland, NE
  • Average high temperature in December: 36.9°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (33.3°F).

  • Average low temperature in December: 23°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

[Resources]

Average pressure in December
Cortland, NE

Average pressure in December - Cortland, NE
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

[Resources]

Average wind speed in December
Cortland, NE

Average wind speed in December - Cortland, NE
  • Average wind speed in December: 10.3mph

The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

[Resources]

Average humidity in December
Cortland, NE

Average humidity in December - Cortland, NE
  • Average humidity in December: 74%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is October (64%).

[Resources]

Average rainfall in December
Cortland, NE

Average rainfall in December - Cortland, NE
  • Average rainfall in December: 1.42"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is February (0.67").

[Resources]

Average rainfall days in December
Cortland, NE

Average rainfall days in December - Cortland, NE
  • Average rainfall days in December: 3.5 days

The month with the highest number of rainy days is May (16.5 days).
The month with the least rainy days is February (2.8 days).

[Resources]

Average snowfall in December
Cortland, NE

Average snowfall in December - Cortland, NE
  • Average snowfall in December: 1.73"

The month with the highest snowfall is January (2.83").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Cortland, NE

Average snowfall days in December - Cortland, NE
  • Average snowfall days in December: 4.5 days

The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Cortland, NE

Average daylight in December / Average sunshine in December - Cortland, NE
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days in December
Cortland, NE

Average sunshine days in December - Cortland, NE
  • Average sunshine days in December: 22.3 days

The month with the most sunshine days is November (22.8 days).
The month with the least sunshine days is May (12.3 days).

[Resources]

Average UV index in December
Cortland, NE

Average UV index in December - Cortland, NE
  • 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).

[Resources]

Average cloud cover in December
Cortland, NE

Average cloud cover in December - Cortland, NE
  • Average cloud cover in December: 40

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 25).

[Resources]

Average visibility in December
Cortland, NE

Average visibility in December - Cortland, NE
  • 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]

Cortland, Nebraska, USA

Weather forecast for your location

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