According to LSM's resident barometric svengali Toms Bricis, the working week will still be less than spectacular with rain and occasional thunderstorms Monday thru Wednesday with temperatures still dipping just below freezing a night in places.
Daytime temperatures will be in the range of +12 to +17 degrees Celsius. Then from Thursday southerly winds will bring markedly warmer air. Weather will be sunny and dry, with only the odd thunderstorm to put a dampener on things. Air temperatures on Thursday will be around +17 to + 22 degrees, but at the weekend will reach +20 to +25 degrees in most of the country but in Kurzeme and Zemgale to +26 to +28 degrees.
Whether or not the weather manages to be officially classified as a 'heatwave' remains to be seen: the official definition requires a two-day period with an afternoon temperatureof +27 C or one day with an afternoon temperature of at least +33 C.
Yet according to Latvian folklore, even thunder has its attractions - it's a rule followed by many that one should not lie on the ground until the first thunder of the year has been heard, otherwise there will be dire consequenced, and there is even an online vote happening in which people are saying whether they have yet heard the peal of thunder.