The 10-day span for Sumy runs from a high near 36° on Friday down to 13° overnight on Wednesday. About 0.22 in of precipitation is expected in total; the most likely wet day is Thursday (67% chance). Wind is the one to watch: gusts to 32 mph around Friday. Right now Sumy is running about 7° warmer than Nyzhnodniprovsk. Longer view: four distinct seasons, with the biggest swings between high summer and midwinter.
Sumy, Ukraine · 50.92°N, 34.80°E · Europe/Kyiv · Forecast computed for these exact coordinates