Weather forecast for: Grenville SD
Last Update: 10:46 am CDT Sep 16, 2026
Today: Partly sunny, with a high near 67. South southeast wind 9 to 11 mph, with gusts as high as 23 mph.
Tonight: Mostly cloudy, with a low around 52. South wind 5 to 8 mph becoming light and variable after midnight.
Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 70. East northeast wind 5 to 9 mph.
Thursday Night: Showers after 1am. The rain could be heavy at times. Low around 55. East wind 8 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New precipitation amounts between 1 and 2 inches possible.
Friday: Showers. High near 62. East wind around 18 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Friday Night: A chance of showers before 1am. Cloudy, with a low around 52. East northeast wind 11 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Saturday: Mostly cloudy, with a high near 65. Northeast wind around 11 mph, with gusts as high as 21 mph.
Saturday Night: A slight chance of showers before 1am. Mostly cloudy, with a low around 52. East northeast wind around 8 mph. Chance of precipitation is 20%.
Sunday: A chance of showers after 1pm. Mostly cloudy, with a high near 63. East wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Sunday Night: A chance of showers. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Monday: A slight chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 20%.
Monday Night: Mostly cloudy, with a low around 51.
Tuesday: Partly sunny, with a high near 68.