National Institute for Meteorology

Bulgaria's weather authorities have issued a Code Orange alert for Sunday with low temperatures expected in four Bulgarian regions.

The capital Sofia, Sofia-Region, Pernik and Kyustendil are affected.

Minimum temperatures will likely go below -21 degrees in the regions, according to the National Institute for Meteorology and Hydrology.

Cloudiness over Bulgaria will remain significant and there will be several regions across the country that will experience light rain and snow.

Meanwhile, winds across Eastern Bulgaria will diminish to moderate levels from the north-west, as announced by the National Institute for Meteorology and Hydrology.

Over the course of Friday, heavy rains are expected all across Bulgaria.

The most severe precipitation and possible thunderstorms are prognosed for the Rhodope mountain regions.

There will also be moderate to strong southern and southeastern winds, as announced by the National Institute for Meteorology and Hydrology.

The weather in Bulgaria will remain partially cloudy on Wednesday, more sun is expected as the day progresses. Winds from the North will continue bringing frost and low temperatures across the entire country, as reported by the National Institute for Meteorology and Hydrology.

Chilly winds from the north will take over Bulgaria on Monday.

Minimum temperatures will vary between -5 and 0 degrees Celsius, the possible maximum for the day will be 2 to 3° C as announced by the National Institute for Meteorology and Hydrology.