January is typically the coldest of all months, with low temperatures averaging around 15 degrees Fahrenheit and highs peaking right around 30 degrees Fahrenheit. Snow is typical and abundant during the winter months in Niagara Falls. The lower Niagara River is only about 36 miles long, and runs between Lake Erie and Lake Ontario. The change in altitude between the two rivers is 326 feet, with more than half of that altitude change occurring at Niagara Falls. The upper portion of the Niagara River runs for 22 miles, from Lake Erie to the Cascade Rapids.