The earth's average surface temperature has increased by about 1 degree Fahrenheit in the 20th century.

This is particularly true on days when temperatures reach 90 degree Fahrenheit and higher.

Overall the water temperature has increased a full degree Fahrenheit.

The average surface temperature of the earth has risen by about 1 degree Fahrenheit in the last century.

The average global surface temperature has risen by more than 1 degree Fahrenheit in the last century, according to the federal experts.

Over the last century, the average surface temperature of the globe has risen by about 1 degree Fahrenheit or a little more.

The average surface temperature of the globe has risen by about 1 degree Fahrenheit over the last 100 years.

From 1950 to 2009, the American government's surface temperature record shows an increase by about one degree Fahrenheit.

So, the Earth's average temperature has increased about 1 degree Fahrenheit during the 20th century.

Daytime temperatures are actually averaging just above 75 degree Fahrenheit.