December weather forecast and climate
Riverton, KS

The first month of the winter, December, is still a chilly month in Riverton, Kansas, with average temperature varying between 31.5°F (-0.3°C) and 46.4°F (8°C).

Temperature

In Riverton, the average high-temperature drops, from a mild 56.3°F (13.5°C) in November, to a frosty 46.4°F (8°C). In Riverton, the average low-temperature is 31.5°F (-0.3°C).

Humidity

The average relative humidity in Riverton is 73%.

Rainfall

In Riverton, Kansas, during 7 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. In Riverton, during the entire year, the rain falls for 139.2 days and collects up to 30" (762mm) of precipitation.

Snowfall

Months with snowfall in Riverton, Kansas, are January through March, May, November and December. In Riverton, during 1.6 snowfall days, 0.47" (12mm) of snow is typically accumulated. In Riverton, during the entire year, snow falls for 9.5 days, and aggregates up to 4.17" (106mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9.7h of daylight.

Sunshine

In December, the average sunshine in Riverton is 5.6h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged 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 Riverton?

In Riverton, in December, the average high-temperature is 46.4°F (8°C), and the average low-temperature is 31.5°F (-0.3°C).

What is the average humidity in December in Riverton?

In Riverton, Kansas, the average relative humidity in December is 73%.

How many days does it rain in December in Riverton?

In Riverton, in December, it is raining for 7 days, with typically 1.5" (38mm) of accumulated precipitation.

How many days does it snow in December in Riverton?

In Riverton, Kansas, in December, during 1.6 snowfall days, 0.47" (12mm) of snow is typically accumulated.

What is the month with the shortest days in Riverton?

With an average of 9.7h of daylight, December has the shortest days of the year in Riverton, Kansas.

How many hours of daylight does Riverton have in December?

The average length of the day in December in Riverton, Kansas, is 9.7h.

How long on average sun shines in December in Riverton?

In Riverton, Kansas, the average sunshine in December is 5.6h.

What is the month with the lowest UV index in Riverton?

Months with the lowest UV index in Riverton are January, February and December, with an average maximum UV index of 2.

What is the UV index intensity in December in Riverton?

In December, the average daily maximum UV index in Riverton is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Riverton, KS
  • Average high temperature in December: 46.4°F

The warmest month (with the highest average high temperature) is July (89.8°F).
The month with the lowest average high temperature is January (43.2°F).

  • Average low temperature in December: 31.5°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).

Average pressure in December - Riverton, KS
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.91").

Average wind speed in December - Riverton, KS
  • Average wind speed in December: 9.4mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

Average humidity in December - Riverton, KS
  • Average humidity in December: 73%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December - Riverton, KS
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is May (5.04").
The driest month (with the least rainfall) is November (1.42").

Average rainfall days in December - Riverton, KS
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in December - Riverton, KS
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (2.09").
Months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in December - Riverton, KS
  • Average snowfall days in December: 1.6 days

The month with the highest number of snowfall days is February (3.3 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Riverton, KS
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 5.6h

Months with the most sunshine are June and July (Average sunshine: 10.7h).
The month with the least sunshine is January (Average sunshine: 5.5h).

Average sunshine days in December - Riverton, KS
  • Average sunshine days in December: 21.5 days

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is May (13.3 days).

Average UV index in December - Riverton, KS
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in December - Riverton, KS
  • Average cloud cover in December: 39

Months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in December - Riverton, KS
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).