| Stage | Core temperature | Clinical findings |
| Cold stressed (but not hypothermic) | 35 to 37°C (95 to 98.6°F) | Normal mental status with shivering. Functioning normally. Able to care for self. |
| Mild hypothermia | 32 to 35°C (90 to 95°F) | Alert with shivering. Not able to care for self. |
| Moderate hypothermia | 28 to 32°C (82 to 90°F) | Altered level of consciousness. May be conscious or unconscious, with or without shivering. |
| Severe hypothermia | <28°C (<82°F) | Unconscious. Not shivering. |
