Sun Valley Weather in January
January in Sun Valley averages 1°C (34°F) during the day and -12°C (10°F) at night. Around 47 mm (1.9 in) of snow/rainfall is typical for this time of year.
Rainfall in Sun Valley in January
Typically around 13 days of snow/rainfall are expected, averaging 47 mm (1.9 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Sun Valley in January
Temperatures in Sun Valley in January top out at 1°C (34°F) and drop to -12°C (10°F) overnight. During January, the winter season is in full swing. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. With lows of -12°C (10°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. With temperatures this low, you'll need to dress warmly. Staying prepared is crucial to avoid the discomfort of the cold.January in Sun Valley can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
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 January
Min Temperature
-12°C (10°F)
Max Temperature
1°C (34°F)
Chance of Rain
42%
Precipitation
47 mm (1.9 in)
Rainy days
13 days
Best Places in the United States of America in January
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 January →
perfect weather
pleasant
tolerable
unpleasant
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What to Wear in Sun Valley in January
Cold weather calls for smart layering in January. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Sun Valley in January
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.
