A weekday whose high is this far above or below the week's typical high, and further from 20°C, loses 1 point.
How points work
Every day starts with 10 points.
Each appointment: −2. Plan next week ahead: its appointments are still there when it becomes this week. Past weeks are cleared.
Preferred day: +1. Hated day: −1. These stick to the weekday until you change them.
Sunny: +1. Partly cloudy: 0. Bad but not rainy (overcast, fog, snow): −1. Rainy (drizzle, rain, showers, storms): −3.
Unusual temperature: −1 for a weekday whose high is at least 5°C above or below the week's typical high (the median of Monday to Friday) and further from a comfortable 20°C than the typical high is, so a milder day isn't penalised. Change the gap under Settings.
The weather comes from the forecast. If it's missing or wrong, open the day and pick it yourself.