At least two people were killed after being hit by lightning strikes in Thatta on Friday.
The injured were moved to a nearby medical facility.
Rain or wind-thunderstorm is expected at isolated places in Umerkot, Thatta and Badin districts in lower Sindh today, according to the Pakistan Metrological Department.
Earlier, heavy rainfall lashed Karachi on the fifth day continuously as three people died by electrocution in various areas of the city.
Three people died by electric current in SITE Town, Binnori Town and Khadda Market in Lyari, rescue sources said.