Weather in Castle Rock in January
Castle Rock, United States averages a high of 4.1°C (39.4°F) and low of -10°C (14°F) in January, with 4 rain days and 8.5 hours of daily sunshine. Travel score: 59.5/100 (Mixed). The best time to visit Castle Rock is August.
High
4°C39°F
Low
-10°C14°F
🌧️
4
rain days
☀️
8.5
hrs/day sunshine
💧
61%
humidity
60— Mixed
January in Castle Rock is cold and mostly dry — bring heavy winter clothing.
What are the average temperatures in Castle Rock?
How much does it rain in Castle Rock in January?
Castle Rock receives an average of 17.4mm of rainfall across 4 rainy days in January. The annual total is 486.9mm.
What should I pack for Castle Rock in January?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Heavy winter coat
Cold weather with highs around 4°C
🩳
Thermal base layers
Stay warm in freezing temperatures
🧤
Warm gloves
Cold nights around -10°C
🧣
Warm scarf
Protect against cold winds
🎉Visiting United States in January?
Don't miss any public holidays — check before you book!
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What is the weather like in other months in Castle Rock?
Data based on 1994–2024 averages · Last updated: 2024-12-31