Visiting local bars in Barnaul 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 June, with an average temperature of 18°C, while the coldest months are January and February, with an average of -12°C. The snowiest months in Barnaul are March, February, January and December, with each month seeing an average of 129 cm of snowfall.