Normal weather for Idaho in December
It's cold in December in Idaho with an average temperature of -2°C. Temperatures this month range from a low of -6°C to a high of 2°C. At night, you can expect temperatures between -19°C and -7°C.
In December, there is an average of 170 mm of precipitation, spread over 20 days. Of the total precipitation, about 175 cm falls as snow in December. The wind speed is around 3 Bft, mostly coming from the South.
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Idaho in December |
UK | ||
|---|---|---|---|
 Average Temperature |
-2°C | 9°C | |
 High Temp |
2°C | 11°C | |
| Low Temp |
-6°C | 8°C | |
 Total Precipitation |
170 mm | 67 mm | |
| Rainy Days |
20 days | 10 days | |
 Total Snowfall |
175 cm | 1,2 cm | |
| Snowy Days |
30 days | 1 day | |
The climate of Idaho is based on weather data from . Other spots, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in Idaho for a full picture of the climate.
Start of December
The month of December starts in Idaho with very cold temperatures, averaging around -1°C during the day and nights close to -13°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-December
By mid-December, the average daytime temperature stays the same at -1°C, with nights close to -12°C. The chance of precipitation is high during this period.
End of December
By the end of December, the average daytime temperature in Idaho will be around -4°C, with nights close to -15°C. There’s a significant chance of many days with precipitation.
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Is December a good time to visit Idaho?
After some sun? Then December isn’t the best time to be in Idaho. There’s too much chance of rain this month.
Temperature records for Idaho in December
With 13°C, Idaho hit the highest temperature in the last 10 years in December 2021. The lowest daytime temperature in this month was -18°C in 2016. The extreme night temperatures ranged from a low of -33°C to a high of 5°C.
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Daily Temperature in December in Idaho
This chart shows the average daily temperatures, both day and night, for each day in December in Idaho, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in December in Idaho
The chart below shows the average daily precipitation in December for Idaho, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for December, you can expect around 20 days of rain in Idaho.
Daily Snowfall in December in Idaho
This chart shows the average daily snowfall in December in Idaho, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in December.
Daily UV Index in December in Idaho
This chart shows the average daily UV index in December in Idaho, 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.
Temperature in December in Idaho Over the Years
This chart shows the average temperature in December in Idaho, measured in degrees Celsius, over the past years.
Total Precipitation in December in Idaho Over the Years
This chart shows the average precipitation in December in Idaho, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in December in Idaho per year
This chart shows the average snowfall in December in Idaho, measured in centimetres, over the past years.
Daily climate in December for Idaho
Click on a specific day in December for detailed info on the typical weather on that day in Idaho. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Idaho
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Average Weather in Idaho by Month
Click on a month below to see detailed weather info for Idaho. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
