  Using the Cosmology Large Angular Scale Surveyor, we measure the
disk-averaged absolute Venus brightness temperature to be 432.3 $\pm$ 2.8 K and
355.6 $\pm$ 1.3 K in the Q and W frequency bands centered at 38.8 and 93.7 GHz,
respectively. At both frequency bands, these are the most precise measurements
to date. Furthermore, we observe no phase dependence of the measured
temperature in either band. Our measurements are consistent with a
CO$_2$-dominant atmospheric model that includes trace amounts of additional
absorbers like SO$_2$ and H$_2$SO$_4$.
