When is the weather forecast?

The starting and ending time of the forecast is bounded by 8 o'clock and 20 o'clock.

Take the urban weather forecast that people are most concerned about as an example. Generally, the city forecast is released twice every day at 5 o'clock and 17. Therefore, the 24-hour forecast released at 5 o'clock refers to the weather forecast between 8 o'clock on the same day and 8 o'clock on the next day, and the forecast term is "from day to night today". The 24-hour forecast released at 17: 00 refers to the weather forecast between 20: 00 on the same day and 20: 00 on the next day, and the forecast term is "tonight to tomorrow".

Generally speaking, the highest temperature appears in the afternoon and the lowest temperature appears in the morning (before sunrise), so the release order of the highest and lowest temperatures varies according to the release time. The highest temperature predicted at 5 o'clock is the daytime temperature of the day, and the lowest temperature is the next morning. The lowest temperature predicted at 17 is the next morning, and the highest temperature is the next day.