A spectral model of low resolution (two vertical levels and rhomboidal wave number truncation 15) has been used in simulations of January and July climatologies. The model has self-generated cloud cover, and it is this aspect that is detailed in this report. The emphasis on cloud production has been chosen partly because of a noticeable lack of detailed information on cloud production from the few other models with self-generated cloud. The cloud covers produced by each simulation are intercompared by use of global mean values, zonal values, through to instantaneous cloud production. It is found that the two simulations have rather different spatial and temporal characteristics. The global mean cloud cover shows much less variability between seasons than the hemispheric means, implying some stability in global cloud cover.