See more current weather Hour-by-hour Forecast in Dayton — Graph °F Wednesday, October 4, 2023 3 pm 86 11 4 pm 86 12 5 pm 85 11 6 pm 84 9 7 pm 81 6 8 pm 77 6 9 pm 74 6 10 pm 72 6 11 pm 71 6 Thursday, October 5, 2023 12 am. Dayton Weather Forecasts. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the Dayton area.