  Shot noise is a powerful tool to probe correlations and microscopic transport
details that conductance measurements alone cannot reveal. Even in atomic-scale
Au devices that are well described by Landauer-B{\"u}ttiker physics,
complications remain such as local heating and electron-phonon interactions. We
report systematic rf measurements of shot noise in individual atomic-scale gold
break junctions at multiple temperatures, with most bias voltages well above
the energy of the Au optical phonon mode. Motivated by the previous
experimental evidence that electron-phonon interactions can modify Fano factors
and result in kinked features in bias dependence of shot noise, we find that
the temperature dependence of shot noise from 4.2~K to 100~K is minimal.
Enhanced Fano factors near 0.5$~G_0$ and features beyond simply linear bias
dependence of shot noise near the 1$~G_0$ plateau are observed. Both are
believed to have non-interacting origins and the latter likely results from
slightly bias-dependent transmittance of the dominant quantum channel.
