Toronto Weather Forecast, maximal polite

Todaygood2Sunny. Increasing cloudiness late this afternoon. Wind becoming east 20 km/h gusting to 40 late this morning. UV index 3 or moderate. Wind chill minus 11 in the morning.
TonightterribleCloudy. Periods of rain or drizzle beginning late this evening. Risk of a thunderstorm overnight. Wind east 30 km/h gusting to 50. Temperature steady near plus 2.
Sundayterrible8 with temperature falling to 0 in the afternoonRain showers changing to flurries late in the afternoon. Risk of a thunderstorm early in the morning. Wind southeast 30 km/h gusting to 50 becoming southwest 30 gusting to 50 in the morning then increasing to 50 gusting to 80 in the afternoon. UV index 1 or low.
Sunday nightbad-7Flurries. Blowing snow. Windy.
Mondaybad-6Cloudy with 60% chance of flurries. Windy.
Monday nightterrible-14Cloudy periods with 30% chance of flurries.
Tuesdaybad-7Cloudy with 30% chance of flurries.
Tuesday nightbad-8Cloudy with 60% chance of snow.
Wednesdayok-4Cloudy with 40% chance of flurries.
Wednesday nightterrible-11Cloudy periods with 30% chance of flurries.
Thursdayok-3A mix of sun and cloud.
Thursday nightbad-9Cloudy.
Fridayok-4Cloudy with 40% chance of flurries.
As of Sat Feb 23 06:45:02 2019

Change style... minimal polite | minimal frank | maximal polite | maximal frank | raw

How does hogdex come up with the ratings?