Yes, it is.
The Fahrenheit unit must be capitalized since it is derived from a proper name as the National Institute of Standards and Technology (NIST) states.
A domestic freezer should be set to these temperatures. 0o Fahrenheit. -18o Centigrade.
No. Names of unique places should be capitalized. For example, the Amazon is a unique place and therefore should use an upper case "A". The rain forest there is one of many rain forests and so does not represent a unique place.
Average human body temperature is 98.6 Fahrenheit. Fevers should be diagnosed by a doctor.
Fahrenheit is a proper noun and should be capitalized.
Yes.
Yes, it is.
The Fahrenheit unit must be capitalized since it is derived from a proper name as the National Institute of Standards and Technology (NIST) states.
Yes, because Celsius or Fahrenheit is a proper nou n.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
Yes it should be capitalized.
No. It should not be capitalized.
It should only be capitalized if it forms part of a title.
Yes, it should be capitalized.
Yes it should be capitalized.
As an abbreviation it should be capitalized.