Check the Forecast to Assess Available Light
Any type of outdoor photography relies heavily on the available light. To capture stunning cityscape photographs you will need the conditions to be right. That doesn’t mean beautiful sunshine. In fact, stormy skies or even things like mist can add an extra dimension to your photos.
But if the forecast is predicting a low lying grey blanket of clouds, you might want to re-plan your shoot for another time. Instead, you could use that time to photograph something else that is right for the conditions.