Weather forecast for: Decorah IA
Last Update: 2:32 pm CDT Sep 15, 2026
This Afternoon: Mostly cloudy, with a high near 74. Northwest wind around 5 mph.
Tonight: Mostly cloudy, with a low around 52. Calm wind.
Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 71. Calm wind becoming east around 6 mph in the morning.
Wednesday Night: A slight chance of showers and thunderstorms between midnight and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 30%.
Thursday: A 30 percent chance of showers before 7am. Mostly cloudy, with a high near 76. Calm wind.
Thursday Night: A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 59. Calm wind. New precipitation amounts between a tenth and quarter of an inch possible.
Friday: Showers and possibly a thunderstorm. High near 72. Southeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Friday Night: Showers and possibly a thunderstorm. Low around 61. Southeast wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Saturday: A chance of showers, with thunderstorms also possible after 1pm. Cloudy, with a high near 76. South wind around 8 mph becoming north in the afternoon. Chance of precipitation is 50%.
Saturday Night: A chance of showers, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 58. Northeast wind around 6 mph. Chance of precipitation is 40%.
Sunday: A 40 percent chance of showers. Mostly cloudy, with a high near 69. Northeast wind 6 to 8 mph.
Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 54. Northeast wind around 6 mph becoming calm in the evening.
Monday: A 20 percent chance of showers. Mostly cloudy, with a high near 68. Northeast wind 3 to 6 mph.