A late-season winter storm is moving toward the Big Trout Lake–Kasabonika region, bringing a messy mix of snow, ice pellets, freezing rain, and strong winds from Thursday morning through Saturday afternoon. Environment Canada has issued a Yellow Warning – Winter Storm, with a moderate impact level and high forecast confidence. Total snowfall of 10 to 20 cm, ice accretion of 5 to 10 mm, and wind gusts up to 70 km/h are possible.
Today’s Weather Overview
Current Conditions
At Big Trout Lake Airport, conditions were sunny at 6:00 PM CDT Wednesday, April 22, 2026, with the temperature sitting at 2.8°C. The barometric pressure was 102.1 kPa, humidity was 47%, and winds were light from the east at 9 km/h. Visibility was reported at 16 km, giving the evening a calm appearance before the approaching storm system changes the weather pattern.
Tonight will begin mainly clear before cloud cover increases late this evening. Winds will strengthen from the east at 30 km/h, gusting to 50 km/h, with the temperature dropping to -7°C. The overnight wind chill will make it feel closer to -15°C.
Tomorrow’s Forecast
Expected Conditions
Thursday, April 23: Cloudy skies will settle in, with a 40 percent chance of snow or ice pellets during the afternoon and a risk of freezing rain. East winds will increase to 40 km/h, gusting to 60 km/h. The high will only reach -2°C, with wind chill values near -17°C in the morning and -10°C in the afternoon.
Thursday night: Conditions will become more hazardous. Ice pellets are possible through the evening and after midnight, then freezing rain mixed with ice pellets is expected to begin after midnight. Southeast winds will blow at 50 km/h, gusting to 70 km/h, with temperatures steady near -1°C.
Friday, April 24: Periods of snow or rain are expected, and it will remain windy. The daytime high will rise to 4°C, but travel may remain difficult as surfaces become slushy, icy, or snow-covered. By Friday night, precipitation is expected to turn back to snow, with a low near -1°C.
Saturday, April 25: Periods of snow or rain will continue, with a high near 5°C. The storm warning is expected to remain relevant into Saturday afternoon, with the heaviest snowfall forecast overnight Friday into Saturday morning. Saturday night will be cloudy with a 30 percent chance of flurries and a low near 0°C.
Environment Canada warns that local utility outages are likely, and property or tree damage is possible due to ice buildup and gusty winds. Travel conditions may deteriorate quickly, especially as snow, freezing rain, and strong winds overlap.
Wardrobe Recommendations
This is a full winter-weather setup despite the calendar saying late April. Wear an insulated winter coat, gloves, toque, and warm boots tonight and Thursday. For Thursday night and Friday, add traction-friendly footwear because freezing rain and ice pellets could make walking surfaces slick. Anyone travelling should dress for delays and carry extra layers, especially with wind chills near -15°C tonight and near -17°C Thursday morning.
Weather Trivia
Kasabonika’s late-April forecast is a classic reminder that winter can linger in Ontario’s Far North. Environment Canada lists the local seasonal normal for this period at a daytime high of 6°C and a low of -6°C, meaning snow, freezing rain, and sub-zero nights are still very much on the table this time of year.
Summary:
Kasabonika and Big Trout Lake face a late-season winter storm warning with 10–20 cm of snow, freezing rain, ice pellets, and wind gusts up to 70 km/h from Thursday through Saturday.
