Sioux Falls, SD – Residents in Sioux Falls should prepare for an increase in temperatures over the coming days, with smoky skies and a chance of scattered thunderstorms today. The high will range between 81°F and 86°F, with a 30% chance of rain. Thursday is expected to bring sunny skies and a high of 88°F, marking the start of a warm spell.
According to the US National Weather Service in Sioux Falls, temperatures will continue to climb through the weekend. Friday will see highs between 86°F and 92°F under sunny conditions. By Saturday, the heat index is predicted to reach between 94°F and 100°F, with actual temperatures ranging from 89°F to 94°F. Sunday will be even hotter, with highs between 93°F and 99°F and a heat index of 96°F to 105°F.
Local authorities advise residents to stay hydrated and limit outdoor activities during peak heat hours. The extended forecast shows the heat continuing into early next week, with highs on Monday expected to be around 87°F. Temperatures will cool slightly by Tuesday, with a high of 79°F and partly cloudy skies.



