The scattering of helium atoms from a Ge(100) surface has been studied at temperatures to within 110 K of the Ge melting point (1210 K). Although the elastic scattering is greatly attenuated as the temperature increases, the (1/20) and (00) helium diffraction peaks remain detectable up to 1000 and 1100 K respectively. No increased attenuation of these diffraction peaks that would be expected to accompany the appearance of numerous adatoms and vacancies is observed. This makes doubtful the interpretation of the results of an earlier x-ray diffraction study. A slight change in the Debye-Wall attenuation of the (00) diffracted helium peak near 825 K is observed, possibly indicating a weak, dimer-preserving phase transition.