The high-pressure area currently over Estonia will slightly weaken in influence on Saturday and, while conditions are set to stay dry, a buildup of cloud is forecast as the influence grows of a low-pressure system to the east.

At the boundary of these two systems, northwesterlies will pick up in speed.

Friday night, and Saturday morning were cloudy but dry. Temperatures ranged from 9-11 degrees Celsius on the mainland to 13 degrees over the islands.

The morning has dawned in continuation of that, with some lingering fog in places. Mostly moderate northwesterlies will reach gusts of up to 9 meters per second in coastal areas, which will also be warmer this morning – up to 16 degrees.

Temperatures will be up to 14 degrees on the mainland, and the breezes will clear the skies over Tallinn and the northwest.

The breezes will intensify slightly during the day, with gusts reaching up to 15 meters per second in coastal areas. Daytime temperatures are expected to range from 17 to 20 degrees. While it will become a bit cloudier, it will mostly remain dry, except for some showers in the northeast.

Overnight, it will be chillier as temperatures are forecast to drop to as low as 3 degrees, with an average of 5 degrees; ground temperatures will dip below zero in places, potentially bringing our first frosts of the autumn. On the other hand, coastal areas will remain much warmer.

Daytime Sunday will see average temperatures of 13 degrees. With the arrival of the new workweek, the mercury will start to climb again — to 15 degrees on average Monday, and up to 19 on average Tuesday, though a little colder and rainier weather is forecast for Wednesday.

The nights will get much warmer again too: While Sunday night into Monday morning is forecast to be only 3 degrees on average, with more frosts likely as ground temperatures go below zero again, by Tuesday night the average ambient temperature is forecast to be as high as 14 degrees.

Tuesday night into Wednesday will bring light rain, picking up on Wednesday and moving from a west-to-east direction, then tapering off Wednesday evening.

Also, Sunday is the autumn equinox, meaning that from the start of the new week, the hours of darkness will be longer than the daylight hours. Each day is a little over five minutes shorter than the previous one at this time of year. Whereas dawn on Saturday was at 7:03 a.m. precisely, by Wednesday it will be a full 10 minutes later. Sundown on Saturday comes at 7:22 p.m., compared with 7:10 p.m. on Wednesday (all times in Tallinn)

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