From d421745cfc3d139a8f9c22a214ecf9aa5b7606ed Mon Sep 17 00:00:00 2001
From: Fabian Affolter <mail@fabian-affolter.ch>
Date: Mon, 24 Sep 2018 19:52:13 +0200
Subject: [PATCH] Mind the unit system (fixes #16819)

---
 homeassistant/components/weather/openweathermap.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/homeassistant/components/weather/openweathermap.py b/homeassistant/components/weather/openweathermap.py
index 87d2bc668..b70413b95 100644
--- a/homeassistant/components/weather/openweathermap.py
+++ b/homeassistant/components/weather/openweathermap.py
@@ -130,6 +130,9 @@ class OpenWeatherMapWeather(WeatherEntity):
     @property
     def wind_speed(self):
         """Return the wind speed."""
+        if self.hass.config.units.name == 'imperial':
+            return round(self.data.get_wind().get('speed') * 2.24, 2)
+
         return round(self.data.get_wind().get('speed') * 3.6, 2)
 
     @property