Weather forecast for: Ralston IA
Last Update: 5:22 am CDT Sep 18, 2026
Today: A 20 percent chance of showers and thunderstorms before 10am. Patchy fog between 11am and 1pm. Otherwise, mostly cloudy, with a high near 83. South southeast wind 10 to 13 mph, with gusts as high as 23 mph.
Tonight: A chance of showers and thunderstorms before 9pm, then showers likely and possibly a thunderstorm between 9pm and 11pm, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 66. South southeast wind 5 to 9 mph becoming west southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday: A 40 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 78. West northwest wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm. Cloudy, with a low around 59. North northeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday: Showers likely, mainly before 1pm. Cloudy, with a high near 67. Northeast wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night: A chance of showers and thunderstorms. Cloudy, with a low around 54. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday: Showers likely, mainly before 1pm. Cloudy, with a high near 61. Chance of precipitation is 60%.
Monday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 49.
Tuesday: Mostly cloudy, with a high near 63.
Tuesday Night: Mostly cloudy, with a low around 46.
Wednesday: Partly sunny, with a high near 65.
Wednesday Night: Mostly cloudy, with a low around 50.
Thursday: Partly sunny, with a high near 69.
WeatherWorld.com
