In Estonia, Sunday is forecasted to start with extremely low temperatures, with nighttime lows potentially reaching -27 degrees Celsius. During the day, temperatures are expected to be milder, hovering between -12 and -8 degrees in coastal areas. The night will bring partial clouds and low visibility in certain areas, with light winds from various directions between 1 to 6 meters per second.

Sunday morning will see minimal cloud cover, and there is no expected snowfall, although fog may develop in some areas. The wind conditions will vary, especially on the islands where winds can reach 12 meters per second at gusts. Temperatures in the morning can range from -19 to -24 degrees Celsius in most parts of the mainland and could drop to as low as -26 in certain regions, with coastal areas experiencing temperatures up to -8 degrees.

As the day progresses, the weather will remain predominantly overcast without precipitation. Winds will shift towards a southerly direction, with speeds from 1 to 7 meters per second on the mainland and 3 to 9 meters per second on the islands. The daytime temperatures will range from -2 to -8 degrees, and cold conditions will still prevail, particularly in eastern Estonia where temperatures can reach -12 degrees. The following Monday is expected to bring a relative warmth with occasional light snow and temperatures between 2 and 7 degrees Celsius.