In September, Sloviansk typically sees daytime highs of 21.0°C and overnight lows around 8.8°C. Compared to the annual average high of 12.9°C, September runs +8.1°C.
September in Sloviansk averages a daytime high of 21.0°C and an overnight low of 8.8°C.
September runs +8.1°C compared to Sloviansk's annual average high of 12.9°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 21.0°C and cooler evenings around 8.8°C.