Does the weather affect the subway? What kind of weather is this and why?

Basically, if it's just the weather, the subway is less affected than other means of transportation unless it's a major disastrous weather.

However, rainfall, snowfall, thunder and lightning, strong winds and smog, these different weather will also have an impact on subway operation in different aspects. Take rainfall as an example. Heavy rainfall affects ground lines, low-lying stations and caves. When the municipal drainage is not smooth, some entrances and exits of some stations will be flooded, resulting in the closure of the entrances and exits. Water seepage in the station structure will also have a serious impact on the electrical equipment in the station.