Great Lakes
Observing System
(GLOS)

Seagull Live Conditions Lake Trends Data Downloads Forecast Models

Great Lakes Monitoring
IL-IN Sea Grant

Great Lakes Monitoring Weather Data Contaminants River Discharge Aquatic Life

National Data
Buoy Center
(NDBC)

Buoy Data Live Weather Data Archived Data Data Time Series

Great Lakes Environmental Research Laboratory

GLERL

ReCON Weather Data Environmental Analysis Ice Cover Water Levels

Great Lakes Integrated
Sciences & Assessments

GLISA

Summary Climate Information Station Climatologies Climate Impacts Climate Change Maps

Bi-National Precipitation Tool

US & Canada Precipitation Canadian Precipitation Analysis (CaPA) Multi-Sensor Precipitation Estimate (MPE)

North American Drought Monitor

Drought Conditions Drought Intensity Drought Impacts

Temperature Maps

Average Temperature (deg F)	Average Temperature Departure	Max Temperature (deg F)	Max Temperature Departure	Min Temperature (deg F)	Min Temperature Departure
7 Days 30 Days Month to Date	7 Days 30 Days Month to Date	7 Days 30 Days Month to Date	7 Days 30 Days Month to Date	7 Days 30 Days Month to Date	7 Days 30 Days Month to Date

Precipitation Maps

Precipitation Total (inches)	Precipitation Total Percent of Mean	Accumulated Snow (inches)	Accumulated Snow Percent of Mean
7 Days 30 Days Month to Date	7 Days 30 Days Month to Date	7 Days 30 Days Month to Date	7 Days 30 Days Month to Date