Visiting local bars in Siauliai is more fun when you know what the weather holds. These rainfall averages and temperatures can help you choose the best time for bar-hopping. The hottest months are usually July and August, with an average temperature of 16°C, while the coldest months are January and February, with an average of -2°C. The snowiest months in Siauliai are January, February, December and November, with each month seeing an average of 34 cm of snowfall.