You can open the website on the computer and click on the current weather forecast query page to enter. Then in the weather forecast interface that appears, click Page Turn, select a specific area, and view the historical weather a month ago. The specific viewing method is as follows:

1. Enter China Weather Network on Baidu, find its official website, and click Enter.

2. After entering the website, click on the 40-day forecast on the right to enter.

3. After the page jumps, select the area to view, click the calendar of the page, and select the date to view.

At this time, you can see that the weather information of a month ago has been inquired through this website.