| Location | Coldest temperature | Date measured |
| Triton | 38K (–235° C, –391° F) | 1989 (Voyager 2) |
| Pluto | 37 K (–236° C, –393° F) | 2005-2010 (Submillimeter Array) |
| Eris | <36 K (–237° C, –395° F) | 2011 (Institute for Radio Astronomy at Millimeter wavelengths) |
| Moon (craters near pole) |
25 K (–248° C, –415° F) | 2010 (Lunar Reconnaissance Orbiter) |
| Interstellar space |
2.73 K (–270° C, –455° F) | 2000 (BOOMERanG) |
Key: K = Kelvin; C = Celsius; F = Fahrenheit
