Thunder Bay – Weather Desk – A cold, quiet start to the week continues across the Greenstone region, with cloudy skies and biting wind chills around Geraldton. Light flurries are possible early today, and a steadier round of snow is expected to develop overnight, keeping roads and walkways slick into Tuesday morning. Environment Canada’s forecast also flags frostbite risk during the coldest wind chill periods.

Today’s Weather Overview

Current Conditions (Geraldton Airport — 6:00 AM EST)

At 6:00 AM EST, Geraldton Airport reported cloudy skies with a temperature of -23°C (-9°F). Winds were WNW 11 km/h, pushing the wind chill to about -31. Humidity was 76%, pressure 102.2 kPa, and visibility a clear 16 km.

What to Expect Today (Monday, Dec. 22)

Environment Canada’s call for today is mainly cloudy, with a 60% chance of flurries early this morning. Winds stay fairly light (up to 15 km/h), but the cold still bites: wind chill near -30 this morning, improving to around -16 this afternoon. The high is -11°C (about 12°F), and there’s a risk of frostbite, especially for anyone outdoors for extended periods.

Tonight (Monday Night)

Cloud sticks around, and snow begins after midnight, with about 2 cm expected. The low is -16°C (about 3°F), and wind chill sits near -22 this evening—still cold enough that exposed skin can become a problem faster than people expect.

Tomorrow’s Forecast

Expected Conditions (Next 3 Days)

Tuesday, Dec. 23

• Snow ends in the morning, then cloudy with a 40% chance of flurries

• Risk of freezing drizzle late morning into early afternoon (watch for surprise ice on sidewalks and untreated roads)

• Additional snow amount around 2 cm

• Wind shifts and strengthens: west 30 km/h early afternoon

• High: -6°C (21°F)

• Wind chill: about -13 in the morning, dropping to around -23 in the afternoon with the stronger wind.

Tuesday Night

• Clear, with a colder reset overnight

• Low: -18°C (0°F)

Wednesday, Dec. 24

• Cloudy

• High: -7°C (19°F)

• Night: cloudy periods, low -17°C (1°F)

Thursday, Dec. 25 (Christmas Day)

• Cloudy with a 40% chance of snow

• High: -6°C (21°F)

• Night: still 40% chance of snow, low -15°C (5°F)

Wardrobe Recommendations

• Today: Winter parka + insulated snowpants if you’ll be outside longer than a quick errand. Add a neck warmer or balaclava—wind chills near -30 don’t play fair.

• Footwear: Warm boots with good tread. With snow arriving overnight (and possible freezing drizzle Tuesday), traction matters.

• Hands: Mitts beat gloves in this cold. Bring a spare pair if you work outdoors.

• Driving kit: Keep extra layers, a blanket, and a small shovel in the vehicle—conditions can change quickly once snow starts.

Weather Trivia

Geraldton has seen truly extreme cold in the past: one widely cited Canadian extremes list includes -50.2°C recorded in Geraldton (a reminder that Northern Ontario can drop into “dangerously cold” territory in a hurry).

The Last Word on the Weather:
Geraldton (Greenstone) weather for Monday, December 22, 2025: cloudy with a chance of flurries, high -11°C, wind chills near -30 and frostbite risk. Snow begins overnight (about 2 cm). Tuesday brings morning-ending snow, possible freezing drizzle, and gustier west winds.