About Weather points
A 0–100 scale per day, based on sun (65 %), warmth (35 %) and a rain penalty (–20 pts max). The top list sums every day in the period.
Accuracy
Data comes from YR's hour-by-hour forecast. Each hour is stored with the freshest model run available before that hour begins, so once the day is over we effectively have very fresh data for the whole 8am–8pm window.
Temperature is typically within ~1 °C. Precipitation and cloud cover are a little more uncertain. Daily rankings can vary somewhat - monthly and yearly summaries are more reliable.