Weather in December
The first month of the winter, December, is also a subzero cold month in Chinook, Montana, with an average temperature fluctuating between 3.7°F (-15.7°C) and 29.7°F (-1.3°C).
On the first day of the month, sunrise is at 7:48 am and sunset at 4:23 pm. On the last day of December, in Chinook, Montana, sunrise is at 8:09 am and sunset at 4:31 pm MST.
Temperature
The arrival of December corresponds with a temperature reduction, down from November's wintry 40.3°F (4.6°C) to a freezing cold 29.7°F (-1.3°C). The nighttime temperature during December exhibits a clear drop from daytime highs, settling at an arctic cold 3.7°F (-15.7°C).Rainfall
During December, Chinook regularly aggregates up to 0.51" (13mm) of precipitation. Throughout the year, in Chinook, 13.07" (332mm) of rain is accumulated.Daylight
December has the shortest days of the year in Chinook, Montana, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 7:48 am and sunset at 4:23 pm. On the last day of December, in Chinook, Montana, sunrise is at 8:09 am and sunset at 4:31 pm MST.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Chinook in December?
Chinook in December has an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 3.7°F (-15.7°C).
How much does it rain in Chinook in December?
During December, Chinook regularly aggregates up to 0.51" (13mm) of precipitation.
What is the month with the shortest days in Chinook?
December has the shortest days of the year, with an average of 8h and 24min of daylight.
How many hours of daylight does Chinook have in December?
In Chinook, the average day length in December is 8h and 22min.
When is the sunrise / sunset in December in Chinook?
On the first day of December, sunrise is at 7:48 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 4:31 pm MST.
Average temperature in December
Chinook, MT
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (25.9°F).
- Average low temperature in December: 3.7°F
The month with the highest average low temperature is July (53.1°F).
The coldest month (with the lowest average low temperature) is January (-0.5°F).
Average rainfall in December
Chinook, MT
- Average rainfall in December: 0.5"
The wettest months (with the highest rainfall) are May and June (2.3").
The driest month (with the least rainfall) is February (0.3").
Average daylight in December
Chinook, MT
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
Chinook, Montana, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location