What wind speed is needed for wind chill?

The NWS wind chill formula applies when wind speed is at least 3 mph and temperature is 50°F or below. Below freezing with winds over 15 mph creates serious frostbite risk.

At what wind chill can frostbite occur?

At wind chill -10°F or below, exposed skin can get frostbite in 30 minutes. At -25°F, 10 minutes. At -45°F or lower, 5 minutes.

Wind Chill Calculator

Enter temperature and wind speed to calculate wind chill, frostbite risk, and exposure limit.

Calculate the wind chill — how cold it actually feels — using the NWS (National Weather Service) formula. Enter air temperature and wind speed to get the apparent "feels like" temperature in Fahrenheit and Celsius, plus frostbite risk and safe exposure limits.

Last reviewed: April 2026Report an error

Temperature (°F)

Wind Speed (mph)

Wind Chill

2.6°F

Wind chill: 2.6°F (-16.3°C). Frostbite risk: Moderate. Safe exposure limit: No limit.

Wind Chill Temperature

2.6°F

-16.3°C

Frostbite Risk

Moderate

Exposure limit: No limit

How to Use This Wind Chill Calculator

Enter the air temperature in Fahrenheit.
Enter wind speed in miles per hour.
Read wind chill temperature, frostbite risk level, and recommended exposure limit.

Frequently Asked Questions

: The NWS wind chill formula applies when wind speed is at least 3 mph and temperature is 50°F or below. Below freezing with winds over 15 mph creates serious frostbite risk.
: At wind chill -10°F or below, exposed skin can get frostbite in 30 minutes. At -25°F, 10 minutes. At -45°F or lower, 5 minutes.

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Wind Chill Calculator

How to Use This Wind Chill Calculator

Frequently Asked Questions

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