A shift from cool to muggy across Sioux Falls
After a cooler stretch in the second half of May, South Dakota is now bracing for a return to warmer, more humid conditions. This transition, expected by the upcoming weekend, will mark a noticeable change in the air, especially across areas like Sioux Falls and the broader KELOLAND region.
Early signs of summer moisture creeping north
While the first half of May delivered above-average warmth, recent days brought a reprieve from the heat. But as June approaches, deeper tropical moisture will begin to migrate northward, a typical pattern for the start of meteorological summer. This increase in atmospheric moisture often sets the stage for larger thunderstorm systems, particularly in areas still struggling with below-normal rainfall.
Dew points rising: A signal of muggier days
Dew point values will be a key indicator of the incoming humidity surge. By early next week, dew points above 60°F (16°C) are expected to move into the region. That level of moisture in the air is where things begin to feel noticeably muggy for most residents. While not yet at the oppressive levels of high summer, this shift will introduce the first real taste of summer air for many.
Patience brings the payoff of summer warmth
Although the return to heat and humidity may take a few more days, the atmosphere is clearly trending toward summer. Residents across KELOLAND, especially those craving sun-drenched afternoons and sultry evenings, should prepare for a change in the weather mood—a true seasonal turn just as June kicks off.
