Temperature in Idaho in December

Daytime highs, nighttime lows and the warmest cities in Idaho, the United States of America this December.

Idaho, the United States of America, a region in the United States of America, experiences maximum daytime temperatures in December ranging from -2°C (28°F) in Stanley to 5°C (41°F) in Lewiston. Nighttime temperatures generally drop to -1°C (30°F) in Lewiston and -15°C (5°F) in Stanley. During December, winter is in full swing.

What is the temperature of the different cities in Idaho, the United States of America in December?

To get a sense of December's typical temperatures in the key spots of Idaho, explore the map below. Click on a point for an in-depth look.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit Idaho, check out our Idaho's climate page.

See also: Idaho weather by month.

Best Places to Visit in Idaho in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Idaho.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in December: blue is cold, red is hot.

See all December weather averages, cities and regions in Idaho

Idaho temperatures in December: frequently asked questions

How hot does it get in Idaho, the United States of America in December?

Expect daytime temperatures around 4°C (39°F) in Boise. That makes December a low month for Idaho, the United States of America.

How cold does it get at night in Idaho, the United States of America in December?

Average overnight lows in Idaho, the United States of America during December sit near -5°C (23°F) in Boise.

What is the warmest city in December in Idaho, the United States of America?

Data insights from our comprehensive database indicate that Lewiston is the city with the highest warmth. Daytime peaks average near 5°C (41°F), while the nights are characterized by a low temperature close to -1°C (30°F).

What is the coldest city in December in Idaho, the United States of America?

In our database, Stanley is the chilliest city in December in Idaho, the United States of America. Daytime temperatures typically peak at -2°C (28°F), while the nighttime lows hover around -15°C (5°F).

How much sun does Idaho, the United States of America get in December?

Most cities enjoy a balanced amount of sunshine, with around 103 hours of sunlight anticipated in Boise. This ensures the days are neither too dim nor excessively sunny.

Interested in more climate information?

We have much more information about the climate in Idaho.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

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