Sun Valley Weather in December
With daytime temperatures of 0°C (32°F) and nighttime lows of -12°C (10°F), December in Sun Valley brings very low temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Sun Valley in December
This month sees the most rain, so carrying an umbrella will ensure you stay dry. Snow is expected on roughly 15 days, totalling around 80 mm (3.1 in) for the month. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Sun Valley in December
If you're visiting Sun Valley in December, expect highs of 0°C (32°F) and overnight lows around -12°C (10°F). The month of December belongs to the winter season. Time outdoors is usually more comfortable with proper winter clothing and protection from wind. With overnight lows of -12°C (10°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. This month tends to bring the coldest weather of the year, so be sure to pack enough warm clothing to stay comfortable.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Sun Valley. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Sun Valley's climate page.
Sun Valley Temperature in December
Min Temperature
-12°C (10°F)
Max Temperature
0°C (32°F)
Chance of Rain
50%
Precipitation
80 mm (3.1 in)
Rainy days
15 days
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Sun Valley in December
Winter clothing is essential for visiting Sun Valley in December. If you have a heavy coat, waterproof boots with good traction, and plenty of warm layers it's smart to bring them. Pack cloths like thermal underwear, wool socks, and insulated gloves. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Sun Valley in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Sun Valley's climate page.
See the full Sun Valley climate overview or explore weather in the United States of America.
