The regional meteorology department forecasts thunderstorms, rain and hail in all of Vidarbha, except Bhandara and Gondia, which may be hit on April 26.
Meanwhile, the maximum temperature shot to 40.6C in Nagpur on Sunday after overnight rain and thunder showers at isolated places.
Heatwave prevailed over Washim as the maximum temperature crossed 43C, 4 notches above normal.
Another spell of unseasonal rains is unlikely to bring the heat down as maximum temperature is likely to remain between 40-42C.