Weather Underground: Big Falls, MN Weather - Current conditions and a short-range forecast. Weather Underground: Big Falls, Minnesota, Forecast - Active advisories, if any. Current conditions, forecast, local radar and satellite. City of Big Falls - Official web site of city government. Includes information on the city campground, open to the public. City officials, business development land available, local lodging and recreation. Big Falls City Map - Closeup view of the city of Big Falls, Minnesota. Interactive street map. AccuWeather: Big Falls, MN - Current conditions, 15-day weather forecast, wind chill or heat index. Big Falls Area Map - Shows where Big Falls is in relation to International Falls/Fort Frances.