In your state (Washington):
Revised Code of Washington
RCW 9A.44.040
Rape in the first degree.
(1) A person is guilty of rape in the first degree when such person engages in sexual intercourse with another person by forcible compulsion where the perpetrator or an accessory:
(a) Uses or threatens to use a deadly weapon or what appears to be a deadly weapon; or
(b) Kidnaps the victim; or
(c) Inflicts serious physical injury, including but not limited to physical injury which renders the victim unconscious; or
(d) Feloniously enters into the building or vehicle where the victim is situated.
(2) Rape in the first degree is a class A felony.
Rape in the 2nd Degree
RCW 9A.44.050
Rape in the second degree.
(1) A person is guilty of rape in the second degree when, under circumstances not constituting rape in the first degree, the person engages in sexual intercourse with another person:
(a) By forcible compulsion;
(b) When the victim is incapable of consent by reason of being physically helpless or mentally incapacitated;
(c) When the victim is developmentally disabled and the perpetrator is a person who is not married to the victim and who has supervisory authority over the victim;
(d) When the perpetrator is a health care provider, the victim is a client or patient, and the sexual intercourse occurs during a treatment session, consultation, interview, or examination. It is an affirmative defense that the defendant must prove by a preponderance of the evidence that the client or patient consented to the sexual intercourse with the knowledge that the sexual intercourse was not for the purpose of treatment;
(e) When the victim is a resident of a facility for mentally disordered or chemically dependent persons and the perpetrator is a person who is not married to the victim and has supervisory authority over the victim; or
(f) When the victim is a frail elder or vulnerable adult and the perpetrator is a person who is not married to the victim and who has a significant relationship with the victim.
(2) Rape in the second degree is a class A felony.
Rape in the 3rd degree
RCW 9A.44.060
Rape in the third degree.
(1) A person is guilty of rape in the third degree when, under circumstances not constituting rape in the first or second degrees, such person engages in sexual intercourse with another person, not married to the perpetrator:
(a) Where the victim did not consent as defined in RCW 9A.44.010(7), to sexual intercourse with the perpetrator and such lack of consent was clearly expressed by the victim's words or conduct, or
(b) Where there is threat of substantial unlawful harm to property rights of the victim.
(2) Rape in the third degree is a class C felony.
I'm not sure if the links work - try hitting REFRESH
Of course, as TSCenter pointed out, you'd have to look at how courts have interpreted the code to see what your state's law actually is.