The combined magnetic and electric hyperfine interaction at the site of a 111Cd impurity in magnetically ordered Dysprosium has been investigated as a function of temperature by time differential perturbed angular correlation measurements. Three different phases have been found in metallic Dy with transition temperatures of 85 and 179 ~ in agreement with the results of bulk material measurements. In the paramagnetic phase above 179 ~ a pure electric quadrupole interaction has been observed. The various contributions to the electric fieldgradient are analyzed and it is shown, that the dominant contribution comes from the conduction electrons.In the ferromagnetic phase which extends from 0 to 85 ~ the magnetic byperfine field at the site of mCd has the same temperature dependence as the spontaneous magnetization. The value of the hyperfine field at 4.2 ~ is [Heffl =(221 _+ 4)kG. At 85 ~ a transition to the antiferromagnetic phase of Dy occurs, which shows a hysteresis of the transition temperature. In the antiferromagnetic phase the temperature dependence of the hyperfine field deviates considerably from the magnetization curve. It is suggested that this deviation might be due to a temperature dependence of the s--f exchange interaction.