Duluth Weather Radar
Duluth Live Weather
Duluth Live Weather Radar
Duluth Hourly Weather Forecast
Duluth 7-Day Weather Forecast
Duluth Weather Overview
Duluth sits at the western tip of Lake Superior in northeastern Minnesota, where the world's largest freshwater lake shapes every season's weather. Pulling up the Duluth weather radar reveals brutal winters, cool summers, and the highest average annual snowfall in Minnesota — around 86 to 90 inches per year. Lake Superior acts as a massive heat reservoir, moderating summer heat while supercharging winter snowfall when Arctic air flows over its open water.
The Duluth weather radar earns its keep from November through March. Lake-effect snow events can drop a foot or more in narrow bands while nearby areas stay clear. The record 2022–23 season buried the city under 140.1 inches of snow, surpassing the previous record of 135.4 inches from 1995–96. The Armistice Day Blizzard of 1940 killed 49 people across Minnesota with 50°F temperature drops and hurricane-force winds. Temperatures fall below 0°F an average of 38 nights per year — the NWS Duluth forecast office (WFO DLH) issues extreme cold warnings regularly from December through February. Use the Duluth MN weather radar to track incoming blizzard bands before they hit Canal Park and the Aerial Lift Bridge.
Spring and early summer bring flooding risk. In June 2012, nearly 8 inches of rain fell in 24 hours, triggering catastrophic mudslides and flash floods that caused over $100 million in damage. The Duluth weather radar shows where heavy rain intensifies over the steep terrain before flooding begins. Annual precipitation averages 31.2 inches, most falling as snow during the long winter season.
Duluth Weather Risks & Safety
Blizzard & Heavy Snow Risk
Duluth gets hit by blizzards when Arctic air combines with moisture — 12+ inches of snow, 35+ mph winds, near-zero visibility. On the radar you can watch the storm bands approach and figure out exactly when the worst will arrive. That timing matters: get your errands done before the bands reach you, and be ready for power outages and road closures that can last days.
Lake-Effect Snow Risk
Duluth gets lake-effect snow — and it's wild. Cold Arctic air blows over the warmer Great Lakes, picks up moisture, and dumps several inches of snow per hour in narrow bands. The tricky part: one neighborhood gets buried while another a few miles away sees blue sky. The radar is the only way to see where those bands are sitting and whether they're about to shift onto you.
Extreme Cold & Wind Chill Risk
When Arctic air drops into Duluth, temperatures plunge well below zero and wind chill values become dangerous — frostbite can set in within minutes of exposed skin. On the radar, watch for the approaching cold front and any precipitation behind it that could freeze on contact. Before it hits: insulate your pipes, stock up on heating fuel, and plan to stay indoors. Wind chill advisories in Duluth mean business.
Severe Thunderstorm Risk
Severe thunderstorms roll through Duluth regularly, especially spring through early fall. Expect damaging winds above 58 mph, large hail, and dangerous lightning. The radar shows you each storm cell's position, movement, and intensity — so you can tell if one is headed your way. When a thunderstorm warning drops for Duluth, get indoors and away from windows until it passes.
Flooding & Flash Flood Risk
Flash flooding is Duluth's most persistent weather hazard. Slow-moving thunderstorms or tropical moisture can dump enough rain to overwhelm drainage systems within hours — especially in paved urban areas where water has nowhere to go. Check the radar to see where the heaviest rain is falling and which areas to avoid. The standing rule: turn around, don't drown. Never drive through flooded roads, even if they look shallow.
How to Use Duluth Weather Radar
Check Current Conditions
View the real-time weather status at the top of the Duluth radar page — temperature, wind speed, humidity, and current conditions give you an instant read on what Lake Superior is doing to the weather right now.
Watch the Duluth Weather Radar Map
The Duluth doppler weather radar shows precipitation moving in off Lake Superior. Toggle between precipitation and cloud cover, then hit play on the animation to see whether lake-effect snow bands are setting up over Canal Park or the North Shore.
Review the Forecast
Scroll to the hourly and 7-day forecast. Look for blizzard watches, extreme cold warnings below -20°F, or severe thunderstorm watches. The NWS Duluth office (WFO DLH) issues warnings quickly when Arctic air builds — check back often in winter.
Plan Around the Weather
Blizzard approaching? Get off I-35 before conditions deteriorate — Duluth hills become impassable fast. Lake-effect event expected? The radar shows exactly which neighborhoods near Spirit Mountain or Park Point are in the snow band's path.
Who Benefits from Duluth Weather Radar
Commuters & Drivers
Duluth drivers on I-35 and the steep hillside streets — check the doppler radar before heading out. Lake-effect snow can make roads treacherous within minutes.
Outdoor Enthusiasts
Hikers on the Superior Hiking Trail and skiers at Spirit Mountain — radar shows incoming storm bands off Lake Superior 30-60 minutes out.
Event Planners & Families
Planning events at Bayfront Festival Park or Canal Park? The 7-day forecast and hourly radar pinpoint exactly when lake-effect snow or thunderstorms arrive.
Outdoor Workers
Port workers, construction crews, and dock workers around the Duluth harbor — the duluth weather radar shows when storm systems will shut down outdoor operations.