Please send comments or bug reports to Lake Superior's ice cover is diminishing. Where T °C = temperature in Celsius and T° F = temperature in Fahrenheit. Click for Lake Superior [Full Lake View] Click to move to the next image to the [North] [South] [West] Most questions can be answered by your Sea Grant Agent or on our CoastWatch Help Pages. Regional Temperatures from Around the Lake. Foundation, Saved by the Beacon - Safe Boating Council, Search and Rescue Satellite Aided Tracking, (All Zones - Includes Synopsis and MAFOR), Global Maritime Distress and Safety System, National Oceanic and Atmospheric Administration. Marine Forecasts (Complete List of Average Temperatures) Use the near real-time water temperature data with discretion, because they may contain errors. Radiofax Charts Great Lakes Open Lake forecasts are subdivided by zone, each identified by text description and a Universal Generic Code (UGC). 2.3-meter foam discus buoy Armstrong, ON Ashland, WI Atikokan, ON Bemidji, MN Chapleau, ON Cloquet, MN Cook, MN Copper Harbor, MI Foundation, Weather For Boaters - BoatU.S. Safety Choose the map background and forecast element and zoom in to your area of interest. Nearshore Marine Forecasts. for the data history of each station. National Oceanic and Atmospheric Administration, Real time raw spectral wave (alpha1) data, Real time raw spectral wave (alpha2) data. About Lake Michigan, Lake Erie and Lake Ontario, however, have already started cooling off. Air Temperature: 35.1 °F; Surface Water Temperature: 37.0 °F; Wind: 0 mph out of the S (gusting to 1 mph) Wave Height: 0.0 ft; Last Updated: November 18, 2020 10:20am CDT Data since 1918 have come from a designated set of gauges in each lake. Amateur Radio Owned and maintained by National Data Buoy Center 2.3-meter foam discus buoy SCOOP payload 47.335 N 89.793 W (47°20'5" N 89°47'34" W) Site elevation: 183 m above mean sea level Air temp height: 3.3 m above site elevation Anemometer height: 3.6 m above site elevation Barometer elevation: 185.3 m above mean sea level Sea temp depth: 1.3 m below water line Water depth: 194.5 m The different colors used in the map above have no meaning and are only intended to assist in differentiating the zones. Lake Superior hit a 31-year high mark in the daily average temperature of its surface waters on August 11 when the average for that day on several monitoring buoys on the open lake tallied 68.7°F (20.4°C). Per decade since 1980, surface water temperature in summer has increased about 2 °F (1 °C), while regional air temperature has increased 1 °F (0.5 °C). Recent Updates. Sea temp depth: 1.3 m below water line Become familiar with and use other means such as NOAA Weather Radio to obtain the latest forecasts and warnings. Similar systems are operational in the other 4 Great Lakes as well. The effect is strongest when the wind blows off the water, and is most pronounced on the lake shore and on slopes that face the lake. While the temperature of the surface of Lake Superior varies seasonally, the temperature below 110 fathoms (660 ft; 200 m) is an almost constant 39 °F (4 °C). Winds are out of the WSW at 13 mph with gusts of 26 mph. NOTICE - Check time and date of forecasts. Become familiar with and use other means such as, Marine Text Forecasts by Zone - Text Interface, Marine Text Forecast and Products - Complete Listing, Text Product File Server Data Files - File Structure Description for FTP, WeatherFax - The Best Budget Weather Solution for Sailors, Buoy, C-MAN, Ship, Drifters, Gliders, HF Radar, PORTS, Physical Oceanographic Real-Time System, Experimental Marine Graphical Composite Forecast maps - Tropical North Atlantic, Experimental Marine Graphical Composite Forecast maps - Eastern North Pacific, Get Marine Text and Graphic Products via Email, Marine Communications - BoatU.S. 10° C translates to 50 °F 20° C translates to 68 °F (just about perfect for most Duluthians) 30° C translates to 86 °F On warm, calm, sunny summer days, however, water temperatures in the Apostle Islands' protected shallow bays can climb into the 70s. The weekly status report and the weekly maintenance report All NOAA, Marine, Tropical and Tsunami Services Branch, Open Lake Forecast for Lake Superior    (All Zones - Includes Synopsis and MAFOR), Experimental Modernized Open Lake Forecast for Lake Superior, Great Lakes Marine Weather Portal - Includes point forecasts. The icy spring chill lingers well into early summer. This is a degree above the long-term average surface water temperature high of 16 °C; it also took place a couple of weeks earlier than the long-term average high, which occurs in early September. WEATHER UNDERGROUND Lakes Michigan, Lake Huron, Lake Erie, and Lake St. Clair Lake Ontario Lake Superior These sites contain near-shore and off-shore marine weather - current conditions and forecasts. The average water temperature in Lake Superior in winter reaches 3°C/37.4°F, in spring 2°C/35.6°F, in summer the average temperature rises to 10°C/50°F, and in autumn it is 10°C/50°F.
2020 lake superior water temp