In the context of “carbon peak and neutrality” target in China, renewable energy is gradually taking the dominant role, the number of electric vehicles (EV) is growing significantly, and the photovoltaic (PV) EV charging stations will play an important role in demand response. This paper proposes a demand response plan of PV charging stations for EVs under the influence of weather based on risk assessment. According to the “predictive-preventive-corrective” framework, firstly, a multi-layer spatial-temporal data integration is processed combing the GIS data of power grid and weather, thus a risk map is produced; then risk assessment considering the impact of the predicted weather on the customers is determined, the operating cost of PV charging station including the charging/discharging expense is modeled, and the day-ahead reserve market participation strategy of the aggregated resources is optimized; finally, demand side management and outage management involving PV and charging/discharging of EVs are discussed respectively and case studies are carried out. This paper effectively predicts and visualizes the weather impact on the electricity customers, and verifies the roles of PV EV charging stations on mitigating the negative impact of weather on the power supply.