Weathermondo.com
United StatesThe weather in December in Janney
It's cold in December in Janney with an average temperature of 0°C. Temperatures this month range from a low of -6°C to a high of 4°C. At night, you can expect temperatures between -18°C and -7°C.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Janney, Montana. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 17°C in 2021, Janney reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was -27°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -39°C to a highest value of 9°C.
Precipitation and snowfall
In December, there is an average of 19 mm of precipitation, spread over 4 days. Of the total precipitation, about 55 cm falls as snow in December. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in December for Janney
Click on any day in December to get detailed info about the usual weather on that day in Janney. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Janney | New York | |
|---|---|---|
| Average temperature | 0°C | 9°C |
| Max. temperature | 4°C | 12°C |
| Min. temperature | -18°C | -5°C |
| Total precipitation | 19 mm | 133 mm |
| Rainy days | 4 days | 17 days |
| Total snowfall | 55 cm | 9,7 cm |
| Snowy days | 19 days | 3 days |
Start of December
The month of December starts in Janney with really cold temps, averaging around 2°C during the day and nights dipping to about -9°C.
Mid December
By mid-December, daytime temps drop to around 1°C, with nights around -10°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of December
By the end of December, the average daytime temperature in Janney is around -3°C, while nighttime temps are about -15°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
UV index
The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Janney for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in December in Janney, Montana. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Janney
Temperature in December in Janney over the years
Precipitation charts
These charts show the average amount of precipitation in December in Janney, Montana. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Janney
Total precipitation in December in Janney over the years
Daily Snowfall in December in Janney
Snowfall in December in Janney per year
Daily UV index in December in Janney
This chart shows the average daily UV index in December in Janney, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Janney
Have you been to Janney in December?
Share your weather experience in December in Janney.
Average weather in Janney by month
Click on a month below to see detailed weather info for Janney. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.