Toronto Weather Forecast, maximal polite

Tonightgood1Mainly cloudy. 30% chance of drizzle overnight. Fog patches developing near midnight.
Fridaygood6Cloudy. 30% chance of drizzle early in the morning. A few showers beginning early in the morning and ending in the afternoon. Fog patches dissipating early in the morning. Wind becoming southwest 20 km/h gusting to 40 near noon. UV index 1 or low.
Friday nightok0Mainly cloudy.
Saturdaygood5A mix of sun and cloud with 40% chance of showers.
Saturday nightok0Cloudy.
Sunday nightok0Cloudy.
Mondaygood1A mix of sun and cloud.
Monday nightbad-8Clear.
Tuesday nightbad-5Cloudy periods.
As of Thu Dec 13 18:45:02 2018

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How does hogdex come up with the ratings?