SIOUX CITY (KTIV) - High temperatures peaked in the 90s in Sioux City each of the last four days. That streak will end today as highs fall closer to average due to a chance of rain. FRIDAY Scattered showers will be concentrated in western Siouxland this morning. Isolated showers and rumbles of thunder are possible across the entire area this afternoon and evening. The rain will not be widespread though, there will still be plenty of dry time today, mainly in northwest Iowa.