December weather forecast and climate
Cortland, NE

The first month of the winter, December, is also a wintry month in Cortland, Nebraska, with temperature in the range of an average high of 36.9°F (2.7°C) and an average low of 23°F (-5°C).

Temperature

In December, the average high-temperature decreases, from a fresh 50.9°F (10.5°C) in November, to a wintry 36.9°F (2.7°C). In December, in Cortland, the average low-temperature is 23°F (-5°C).

Humidity

In Cortland, the average relative humidity is 74%.

Rainfall

In December, the rain falls for 3.5 days. Throughout December, 1.42" (36mm) of precipitation is accumulated. In Cortland, during the entire year, the rain falls for 115.2 days and collects up to 22.56" (573mm) of precipitation.

Snowfall

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

Daylight

December has the shortest days of the year, with an average of 9.3h of daylight.

Sunshine

The average sunshine is 5.4h.

UV index

Months with the lowest UV index in Cortland are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Cortland?

In December, the average high-temperature is 36.9°F (2.7°C), and the average low-temperature is 23°F (-5°C).

What is the average humidity in December in Cortland?

In December, the average relative humidity is 74%.

How much does it rain in Cortland in December?

In December, in Cortland, Nebraska, 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, in December, snow falls for 4.5 days, with typically accumulated 1.73" (44mm) of snow.

What is the month with the shortest days in Cortland?

December has the shortest days of the year in Cortland, with an average of 9.3h of daylight.

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

In Cortland, the average length of the day in December is 9.3h.

How long on average sun shines in December in Cortland?

In December, the average sunshine in Cortland, Nebraska, 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.

What is the UV index intensity in December in Cortland?

In Cortland, Nebraska, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in December - Cortland, NE
  • Average high temperature in December: 2.7°C

The warmest month (with the highest average high temperature) is July (30.4°C).
The month with the lowest average high temperature is January (0.7°C).

  • Average low temperature in December: -5°C

The month with the highest average low temperature is July (19.6°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).

Average pressure in December - Cortland, NE
  • Average pressure in December: 1020.3mbar

The month with the highest atmospheric pressure is January (1021.5mbar).
The month with the lowest atmospheric pressure is June (1011mbar).

Average wind speed in December - Cortland, NE
  • Average wind speed in December: 16.5km/h

The windiest month (with the highest average wind speed) is April (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).

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%).

Average rainfall in December - Cortland, NE
  • Average rainfall in December: 36mm

The wettest month (with the highest rainfall) is May (93mm).
The driest month (with the least rainfall) is February (17mm).

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).

Average snowfall in December - Cortland, NE
  • Average snowfall in December: 44mm

The month with the highest snowfall is January (72mm).
Months with the least snowfall are June, July, August and September (0mm).

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).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Cortland, NE
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 5.4h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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).

Average UV index in December - Cortland, NE
  • Average UV index in December: 2

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

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).

Average visibility in December - Cortland, NE
  • Average visibility in December: 9km

Months with the highest visibility are March, June, October and November (10km).
Months with the lowest visibility are January, February, April, May, July, August, September and December (9km).