Shimla's weather on Saturday, 12 September 2026, will transition from clear skies to significant afternoon thunderstorms and heavy rain. The temperature will reach a high of 22°C. Be prepared for intensifying rain showers and thunderstorms, with a 100% chance of precipitation by early afternoon. 📰 Shimla Weather Forecast & Update for Today, Saturday, 12 September 2026: Expect Thunderstorms and Heavy Rain, High of 22°C.