In September, Kostyantynivka typically sees daytime highs of 20.9°C and overnight lows around 8.9°C. Compared to the annual average high of 12.8°C, September runs +8.1°C.
September in Kostyantynivka averages a daytime high of 20.9°C and an overnight low of 8.9°C.
September runs +8.1°C compared to Kostyantynivka's annual average high of 12.8°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 20.9°C and cooler evenings around 8.9°C.