| NWS Forecast for: Jefferson IA Issued by: National Weather Service Des Moines, IA Last Update: 8:21 pm CDT Aug 9, 2026 | |
Tonight: Mostly cloudy, with a low around 68. East northeast wind 3 to 5 mph. Monday: A 20 percent chance of showers and thunderstorms before 9am. Partly sunny, with a high near 86. East wind 5 to 8 mph. Monday Night: A 20 percent chance of showers and thunderstorms after 3am. Increasing clouds, with a low around 69. East wind 3 to 5 mph. Tuesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 90. Heat index values as high as 102. Southeast wind around 6 mph becoming north in the morning. Chance of precipitation is 40%. New precipitation amounts between a quarter and half of an inch possible. Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Light and variable wind. Wednesday: A chance of thunderstorms before 7am. Partly sunny, with a high near 87. Chance of precipitation is 30%. Wednesday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%. Thursday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 50%. Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 50%. Friday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Saturday: A 30 percent chance of showers. Mostly cloudy, with a high near 77. Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 62. Sunday: A 30 percent chance of showers. Mostly cloudy, with a high near 76. | |
| Jefferson IA 42.03°N 94.38°W | |
Visit your local NWS office at: https://www.weather.gov/desmoines |