Extreme muon quantum effects will be studied in the simple organic molecule acetone in deuterated and undeuterated forms using ALC spectroscopy to determine the quantum averaged hyperfine parameters of the state formed by muon addition to a C=O bond. These measurements will span between the low temperature solid phase which is dominated by quantum motion of the muon and the high temperature liquid phase where thermally activated vibrations of the muon within the molecule produce a significant temperature dependent contribution to the isotropic hyperfine constant. The results will be used to develop and test new computational methods for determining muon parameters that take these quantum and thermal averaging effects fully into account.