Cloudy Skies and Chilly Evening Forecast for Ottawa This Sunday
Cloudy, Cold Day Expected in Ottawa Sunday

Residents of Canada's capital are set to experience a classic late-December day, with overcast skies and a notably cold evening expected for Sunday, December 21, 2025. The forecast calls for a day dominated by cloud cover, offering little in the way of sunshine, before temperatures take a sharp dip after sunset.

A Gloomy but Seasonal Day in the Capital

The weather pattern moving into the region is typical for this time of year. The cloud cover will persist throughout the daylight hours, creating a dim and grey atmosphere across the city. While no significant precipitation is currently in the forecast for Sunday itself, the lack of sun will make it feel particularly wintry. The day serves as a reminder that the heart of the Canadian winter is firmly settling in across Ontario.

Bracing for a Bitterly Cold Night

The main weather story will develop as night falls. Meteorologists are predicting a significant drop in temperature, leading to a cold evening that will require appropriate attire for anyone venturing outdoors. This cold snap underscores the importance of winter preparedness, from ensuring home heating systems are functioning to dressing in layers. The chilly conditions are expected to continue into the start of the new week.

Staying Safe and Warm During the Holiday Week

With the holiday season in full swing, the forecasted cold serves as a timely warning. Experts advise checking on vulnerable neighbours and ensuring pets have limited exposure to the frigid evening air. The cloudy day may also impact travel visibility, so drivers should exercise caution, especially as many will be out for last-minute holiday preparations or gatherings. Staying informed about the latest weather updates is recommended as conditions can change rapidly during a Canadian winter.

The weather in Ottawa this Sunday aligns with the seasonal norm, marking a period where warm coats, hats, and gloves become essential items for daily life. As the year draws to a close, the cold evening acts as a stark prelude to the deep winter months that lie ahead in January and February.