In early September, with the penetration of cold Arctic masses, the air temperature in the northern regions dropped and was within +15 +22 ° C. But already on September 03, with the removal of warm air masses from the eastern coast of the Mediterranean Sea and the establishment of an anticyclonic type of weather, hot summer weather was observed, the air warmed up to +25 +36 ° C. Then there was an alternation of cold and heat waves, only in the southern and southeastern regions, with zonal transfer of air masses, clear days with a high temperature background prevailed.
The first frosts in Kazakhstan were observed in the period of September 19-28 and were observed in the western, northern, central, eastern regions, as well as in mountainous areas of the south-east of the country, the air temperature dropped to -2-9 °C at night.
In the northern half of the republic, at the end of the first decade, often in the second decade and at the end of the month, northern cyclones and associated frontal sections determined the unstable nature of the weather, there were rains, sometimes strong up to 15-18 mm (18 mm of precipitation was recorded at the Zheleznodorozhny Weather Station and the Tobol Weather Station of Kostanay region on September 28), wind often increased with gusts up to 15-28 m/s. And at the end of September, at night, there was a transition of rain to snow.
In the southern half of Kazakhstan, with the predominant influence of the area of high pressure, light precipitation was observed on some days, only in the south-east of the republic, with the passage of atmospheric fronts, moderate rains fell, and rain and snow was observed in mountainous and foothill areas. The wind also increased to 15-29 m/s, with gusts of 30 m/s or more (in the Almaty region), which caused dust storms with reduced visibility to 100-1000 m.
There were no records in the temperature regime in Nur-Sultan, the lowest air temperature in the capital was recorded on September 22 and amounted to -2.4 ° C, and the highest air temperature was recorded on September 04 and amounted to +29.0 °C. However, the amount of precipitation was more than two monthly norms - 54 mm (244% of the norm), while the norm for the month was 22 mm.