Best Time to Visit Sun Valley for Winter Activities | Weather by Month

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Winter Activities Potential

89/100

Excellent

Based on optimal climate

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Seasonality

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Best Time

November, December, January

Avoid

Avoid (Extreme Weather)

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Weather

-6°C – 16°C

Avg Temp Range

Precipitation

Generally dry

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Good For

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United StatesWinter Activities climate guide

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❄️ Planning a winter trip to Sun Valley?

The best time to visit Sun Valley for winter activities is November, December, January, when conditions are ideal for experiences like northern lights, dog sledding, and snow excursions. If you're planning your trip during this period, it’s a good idea to explore available tours and places to stay in advance.

→ Explore the best places to stay in Sun Valley

→ Discover winter activities in Sun Valley

Climate Heatmap

See at a glance which months offer the best winter activities conditions — based on temperature, rainfall and climate scores.

Winter months in Sun Valley offer the highest chances of seeing the northern lights and enjoying snow-based activities.

→ See where to stay in Sun Valley

Winter Activities conditions breakdown

Monthly weather & climate data for Sun Valley

Month	Climate Score	Predictability	Avg Temp	Max Temp	Rain (mm)	Rain Days	Humidity	Season
January	88Excellent Cool temperatures. Some rain conditions.	Predictability 85Weather conditions are fairly consistent throughout the year.	-6°	-1°	65	12.2	63%	shoulder
February	88Excellent Cool temperatures. Mostly dry conditions.	Predictability 100Weather conditions are fairly consistent throughout the year.	-5°	1°	46	11.7	63%	dry
March	87Excellent Cool temperatures. Mostly dry conditions.	Predictability 85Weather conditions are fairly consistent throughout the year.	-2°	4°	42	12.7	59%	dry
April	82Excellent Cool temperatures. Mostly dry conditions.	Predictability 100Weather conditions are fairly consistent throughout the year.	2°	8°	38	11.2	53%	dry
May	20Poor Cool temperatures. Mostly dry conditions.	Predictability 100Weather conditions are fairly consistent throughout the year.	6°	14°	50	10.9	47%	dry
June	20Poor Cool temperatures. Mostly dry conditions.	Predictability 100Weather conditions are fairly consistent throughout the year.	11°	19°	40	8.7	45%	dry
July	20Poor Mild temperatures. Mostly dry conditions.	Predictability 100Weather conditions are fairly consistent throughout the year.	16°	25°	16	5.4	32%	dry
August	20Poor Mild temperatures. Mostly dry conditions.	Predictability 60Weather conditions vary somewhat by season.	15°	24°	16	5.4	28%	dry
September	20Poor Cool temperatures. Mostly dry conditions.	Predictability 60Weather conditions vary somewhat by season.	11°	19°	20	6	32%	dry
October	35Poor Cool temperatures. Mostly dry conditions.	Predictability 60Weather conditions vary somewhat by season.	5°	12°	34	7.1	43%	dry
November	89Excellent Cool temperatures. Mostly dry conditions.	Predictability 100Weather conditions are fairly consistent throughout the year.	-3°	3°	38	10.5	62%	dry
December	89Excellent Cool temperatures. Some rain conditions.	Predictability 85Weather conditions are fairly consistent throughout the year.	-6°	-1°	71	13.2	60%	shoulder