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SESK: Stuff Everyone Should Know · sesk.info/ski-windchill-30-minutes

At 0 F with a 15 mph wind, how long can exposed skin take to freeze?

About 30 minutes (wind chill -19 F).

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  1. About 5 minutes
  2. About 3 hours
  3. About 30 minutes ✔

Why: At 0 F air temperature and a 15 mph wind, the wind chill is -19 F. NWS says exposed skin can freeze in about 30 minutes, so cover cheeks and noses on windy chairlifts.

Huh, didn't know that: NWS says bright sunshine may raise the wind chill temperature by 10 to 18 degrees F.

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References

Answer: About 30 minutes. At 0 F air temperature and a 15 mph wind, the wind chill is -19 F. NWS says exposed skin can freeze in about 30 minutes, so cover cheeks and noses on windy chairlifts.

  1. NWS: Wind chill chart www.weather.gov/safety/cold-wind-chill-chart
    At this wind chill temperature, exposed skin can freeze in 30 minutes.
    Checked 2026-10-10.
  2. NWS: Wind chill chart www.weather.gov/safety/cold-wind-chill-chart
    Bright sunshine may increase the wind chill temperature by 10°F to 18°F.
    Checked 2026-10-10.

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