Will I be cold?
Will I be cold in Denver in January?
Verdict
Yes — Yes, cold.
Lows drop to 16°F on average — noticeably cold, especially after sundown. Big diurnal swing (29°F) — layers matter more than one warm coat.
Day vs. night
Day
45°F
Cold
Direct sun feels cool at best; shade is jacket weather.
Night
16°F
Freezing
Deep freeze after sunset — every exposed step counts.
Why
Denver in January averages highs of 45°F, lows of 16°F, 6 rainy days.
Plan for real winter kit — an insulated coat, warm hat, and gloves rather than a light jacket.
The day-to-night temperature swing is 29°F, which is the real story here — the average number hides how different midday and midnight feel.