Wind Chill Calculator

Calculate how cold it actually feels outside using temperature and wind speed.

Wind Chill Temperature -
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What Is the Wind Chill Calculator?

Wind Chill Temperature describes how cold the air actually feels on exposed skin when wind is factored in. This calculator uses the official U.S. National Weather Service wind chill formula.

Formula Used

WC = 35.74 + 0.6215T − 35.75×V^0.16 + 0.4275×T×V^0.16

T is air temperature in °F and V is wind speed in mph. This formula is valid for temperatures at or below 50°F and wind speeds of 3 mph or higher.

How to Use This Calculator

  1. Enter the current air temperature in °F.
  2. Enter the current wind speed in mph.
  3. Click Calculate to see how cold it actually feels.

Worked Example

At 20°F with a 15 mph wind: WC = 35.74 + 0.6215×20 − 35.75×15^0.16 + 0.4275×20×15^0.16 ≈ 6.0°F, meaning it feels roughly 14 degrees colder than the actual air temperature.

Frequently Asked Questions

What is wind chill?

The "feels like" temperature accounting for how wind increases heat loss from skin.

How is wind chill calculated?

Combining air temperature and wind speed using an empirically derived equation.

Why does wind make cold feel even colder?

It strips away the warmer insulating air layer near your skin.

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