Weather in Idaho Falls in December
Idaho Falls, United States averages a high of -0.4°C (31.3°F) and low of -8.4°C (16.9°F) in December, with 9 rain days and 6 hours of daily sunshine. Travel score: 41.7/100 (Mixed). The best time to visit Idaho Falls is July.
High
0°C31°F
Low
-8°C17°F
🌧️
9
rain days
☀️
6
hrs/day sunshine
💧
75%
humidity
42— Mixed
December in Idaho Falls is freezing and occasionally wet — bring heavy winter clothing.
What are the average temperatures in Idaho Falls?
How much does it rain in Idaho Falls in December?
Idaho Falls receives an average of 37mm of rainfall across 9 rainy days in December. The annual total is 354.2mm.
What should I pack for Idaho Falls in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around 0°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -8°C
🧣
Warm scarf
Protect against cold winds
Traveling to United States in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31