The table and the Feels like readings illustrate the wind chill effect
The Feels like temperature depends on air temperature and wind speed.
The Wind chill table covers temperatures ranging from 0 to −50 degrees Celsius in 5-degree increments, as well as wind speeds ranging from 2 to 20 meters per second. The Feels like readings are rounded to the nearest degree. The effects of humidity and solar radiation have not been taken into account.
Humidity and solar radiation are not taken into account in the table
Air humidity has a limited effect on how cold it feels. Humid air conducts heat better than dry air, the insulating properties of damp clothing are reduced, and moisture is deposited as frost on the skin and clothing. However, the effect of humidity is clearly smaller and harder to measure than the chilling effect of the wind. Furthermore, during severe cold spells, the air’s moisture content is very low anyway. For these reasons, the effect of humidity has been omitted from the table.
The effect of solar radiation has also been omitted from the table. For example, on a sunny, cold day in March, solar radiation would add about +1.3 °C to the reading.
Feels like reading in Local weather forecast
The Feels like reading in the Local weather forecast gives a quick indication of wind chill. The colors are intended to make the forecast quicker and easier to read.
The Feels like reading is illustrated in the Local Weather forecast by a figure whose color varies:
If the weather feels at least 5 degrees colder than the forecast temperature, the figure is blue.
If the weather feels at least 2 degrees warmer than the forecast temperature, the figure is pink.
By default, the Feels like figure is white.
In sub-zero temperatures, the Feels like reading takes into account the air temperature and the chilling effect of the wind. The reading indicates how the weather would feel in calm conditions with dry air.
Individual differences in how cold or warmth is perceived are large.
