Ottawa's Friday Weather Mix: Frost, Ice Fog Before Sunny Weekend
Ottawa weather: Frosty Friday before sunny Saturday

Residents of Canada's capital are in for a weather rollercoaster this Friday as Ottawa experiences a messy mix of conditions, though relief appears imminent with sunshine expected to return for Saturday.

Friday's Frosty Conditions

The National Capital Region woke up to a winter-like scene on Friday, November 21, 2025, with trees coated in a delicate layer of frost following an overnight episode of ice fog. The phenomenon created picturesque but potentially hazardous conditions across the city.

Peter Szperling of CTV News Ottawa captured striking images of the frost-encased trees on November 20, 2025, showcasing the extent of the icy coverage that settled over the region. The ice fog, which occurs when water droplets freeze upon contact with surfaces, transformed Ottawa's landscape into a winter wonderland ahead of the official start to the season.

Weekend Weather Turnaround

Meteorologists indicate that the gloomy and frosty conditions won't linger long. Saturday is forecast to bring sunny skies and improved weather conditions, offering residents a welcome reprieve from Friday's messy mix.

The dramatic shift in weather patterns demonstrates the variability of late autumn conditions in Eastern Ontario, where temperatures can fluctuate significantly within short timeframes. Environment Canada has been monitoring the system responsible for Friday's conditions as it moves through the region.

Seasonal Weather Patterns

This type of weather event is not uncommon for Ottawa during late November, when transitional seasons often bring unpredictable conditions. The ice fog and frost occurrence follows typical patterns for the region as temperatures hover around freezing points.

Local authorities remind drivers and pedestrians to exercise caution during such conditions, as frost and ice can create slippery surfaces on roads and walkways. The brief period of winter-like weather serves as a reminder that the colder months are approaching, despite the promised sunshine for the weekend.

Residents looking forward to outdoor activities this weekend can take comfort in the forecasted improvement, though they're advised to stay updated on any changes to weather predictions throughout Friday.