Look for another hot day in KELOLAND with highs once again in the 90s. A heat advisory is also in effect for much of southern and southeastern areas, with heat index values over 100 in many areas. Winds will be fairly light too, offering little relief. Drink lots of water and avoid the worst of the heat during the afternoon if you can.
Overnight lows will be in the upper 60s to lower 70s again with a slight chance of rain in northern and western SD. This trend may repeat tomorrow as these areas remain a little closer to the edge of the most intense heat.
Temperatures will remain hot the rest of the week with highs in the 90s likely. Our best shot at cooler weather will arrive Saturday night into Sunday as a cold front moves in from Canada. There could be some scattered rain too, but highs will be in the 80s again by Sunday in most areas, with the coolest air arriving on Labor Day. This cooler pattern may be short-lived, but it will offer a break from this late summer heat wave.