Dillon
Colorado, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Dillon, CO

A great autumn shot of the brown and golden trees near the iconic Dillon reservoir in Colorado, a far view of forests and high mountain ridges
A great autumn shot of the brown and golden trees near the iconic Dillon reservoir in Colorado, a far view of forests and high mountain ridges
The first month of the winter, December, is still a cold month in Dillon, Colorado, with temperature in the range of an average low of 1.2°F (-17.1°C) and an average high of 32.7°F (0.4°C).

Temperature

In December, the average high-temperature marginally drops, from 40.8°F (4.9°C) in November, to a still wintry 32.7°F (0.4°C). In Dillon, in December, the average low-temperature is 1.2°F (-17.1°C).

Rainfall

During December, Dillon regularly aggregates up to 1.1" (27.9mm) of precipitation. During the entire year, Dillon aggregates up to 16" (407.4mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. During December, Dillon regularly aggregates up to 17.5" (444.5mm) of snow. In Dillon, during the entire year, snow aggregates up to 127.5" (3238.4mm).

Daylight

December has the shortest days of the year, with an average of 9.4h of daylight.

What is the temperature in December in Dillon?

In December, in Dillon, Colorado, the average high-temperature is 32.7°F (0.4°C), and the average low-temperature is 1.2°F (-17.1°C).

How much does it rain in Dillon in December?

In Dillon, Colorado, in December, 1.1" (27.9mm) of precipitation is typically accumulated.

How much does it snow in Dillon in December?

Throughout December, 17.5" (444.5mm) of snow is accumulated.

What is the month with the shortest days in Dillon?

December has the shortest days of the year in Dillon, Colorado, with an average of 9.4h of daylight.

How many hours of daylight does Dillon have in December?

The average length of the day in December is 9.4h.
Average temperature in December - Dillon, CO
  • Average high temperature in December: 32.8°F

The warmest month (with the highest average high temperature) is July (74.2°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in December: 1.2°F

The month with the highest average low temperature is July (37.1°F).
The coldest month (with the lowest average low temperature) is January (-1.1°F).

Average rainfall in December - Dillon, CO
  • Average rainfall in December: 1.1"

The wettest month (with the highest rainfall) is July (1.9").
The driest month (with the lowest rainfall) is November (1").

Average snowfall in December - Dillon, CO
  • Average snowfall in December: 17.5"

The month with the highest snowfall is March (22.1").
Months with the lowest snowfall are July and August (0").

Average daylight in December - Dillon, CO
  • Average daylight in December: 9.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.4h).