Weather forecast for: Allen SD
Last Update: 9:36 pm MDT Sep 18, 2026
Tonight: A chance of showers and thunderstorms between midnight and 3am, then a chance of showers after 3am. Patchy fog before 1am, then patchy fog after 4am. Otherwise, cloudy, with a low around 55. North wind 6 to 8 mph. Chance of precipitation is 40%.
Saturday: A 30 percent chance of showers, mainly after 3pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 65. Northeast wind 6 to 10 mph, with gusts as high as 20 mph.
Saturday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 52. East wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Sunday: Showers, with thunderstorms also possible after noon. High near 60. East wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 100%.
Sunday Night: Showers and possibly a thunderstorm. Low around 49. East wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 61. Northeast wind 9 to 13 mph, with gusts as high as 21 mph.
Monday Night: Mostly cloudy, with a low around 48.
Tuesday: A slight chance of showers before noon. Partly sunny, with a high near 68. Breezy.
Tuesday Night: Partly cloudy, with a low around 54. Breezy.
Wednesday: Mostly sunny, with a high near 75. Breezy.
Wednesday Night: A slight chance of showers. Partly cloudy, with a low around 55.
Thursday: Mostly sunny, with a high near 75.
Thursday Night: Partly cloudy, with a low around 55.
Friday: Mostly sunny, with a high near 77.
WeatherWorld.com
