KELOLAND will likely end July on a cool note.
The last week of July may end up feeling more like the first week of September with an average high in the upper 70s. The odd thing is this is occurring during what is typically our warmest time of year.
After morning rain in southeast KELOLAND, the sun came out and the temperature warmed to the 80s in many locations. While we still ended up below average, much cooler air will soon be here to bring the numbers down to the 70s. We've had those types of temperatures at the end of July before.
Since 1990, it's happened 6 times. The coolest showing an average high of 76 in 2013. The other years were 77 and 79 degrees. According to the current forecast, Sioux Falls may have an average high for the last week of the month of 77 degrees.
Along with the cooler than average daytime highs, overnight lows will also fall. In fact, don't be surprised if you wake up to a morning with 40 degree air. During those cool years Sioux Falls had lows fall to the 40s four times.
While we'll slowly warm out of this cool spell for the beginning of August, August may end up being a cooler than average month. We'll have an official outlook for the month next week.