The Bureau of Meteorology has cancelled a severe thunderstorm warning for Canberra but says the chance of a thunderstorm remains. The bureau has forecast we'll have 15 to 30mm of rain for Tuesday, ahead of up to 60mm of rain that could come on Wednesday. Meteorologist Peter Stapleton earlier told The Canberra Times that shower and storm activity was moving towards Canberra on Tuesday morning and he urged locals to keep an eye out on weather. "We do have a warning currently but at the moment it's focused out in the west of NSW where the current storm activity is," he said. "But as that storm activity along with the low moves further eastward, and ... kind of develops through the afternoon, there is a chance that Canberra could be affected by that." The bureau has issued a warning for sheep graziers, stating that cold temperatures, rain and showers and easterly winds are expected on Tuesday night and Wednesday, with the ACT likely to be affected. "There is a risk of losses of lambs and sheep exposed to these conditions," the bureau said. Mr Stapleton said Canberrans could expect to see heavier rainfall overnight with a clearing trend in the morning before showers and storms redevelop. "After that, we should see the easing of the showers later into the week," he said. The bureau has forecast a partly cloudy Thursday, with a chance of showers and a thunderstorm. A top of 25 degrees and a chance of showers is expected for the start of summer on Friday.