Ottawa is due for more showers and possibly thunderstorms on Sunday. According to Environment Canada’s weather forecast for the Ottawa area, showers will begin early in the morning and continue throughout Sunday. There is also a risk of thunderstorms throughout the day. The temperature will reach 23 C, and the overnight low will be 15 C. On Monday, expect a high of 20 C and a chance of showers. Tuesday’s forecast predicts a chance of showers and 22 C. On Wednesday, expect a mix of sun and clouds and 26 C.