December weather forecastValentine, NE

Weather in December

December in Valentine, Nebraska solidifies the passage into the heart of winter. The month experiences the sharpest thermal decline from the warmer weather in November. With snowfall rising to 5.1" (130mm), the cold sets in, covering the city in a winter wonderland. Further shortening daylight hours accompany the plummeting temperatures. The change in weather encapsulates the holiday spirit that is synonymous with the month.

Temperature

The move into December indicates a reduction in the average high-temperature, down from November's frosty 47.7°F (8.7°C) to a wintry 36.7°F (2.6°C). Despite the high peak temperatures, Valentine witnesses an average nighttime cooling to a frigid cold 10.9°F (-11.7°C) in December.

Humidity

In Valentine, the average relative humidity in December is 64.3%.

Rainfall

In Valentine, in December, during 4.5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, in Valentine, there are 87.9 rainfall days, and 20.04" (509mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Valentine. In Valentine, during December, snow falls for 3.9 days and regularly aggregates up to 5.12" (130mm) of snow. In Valentine, during the entire year, snow falls for 22.3 days and aggregates up to 33.31" (846mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 6:54 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:18 pm MST.

Sunshine

With an average of 5.3h of sunshine, December has the least sunshine of the year.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Experience reduced UV exposure by about half when donning a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.