Will I be hot?
Will I be hot in Denver in January?
Verdict
No — No, comfortable.
Highs cap at 45°F — no heat-management gear needed.
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.
Temperature is comfortable across the day; pack for style and weather resistance, not heat management.
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.