A Flash Flood Watch is posted for south central and southeast Iowa. National Weather Service Meteorologist Brad Small says thunderstorms and periods of heavy rainfall have been popping up over the region this afternoon. He says the storms will come to an end tonight and be followed by fair and cool weather this weekend.
The colder air could bring patches of frost Saturday night into Sunday. "We’re looking at near record low temperatures well into the 30s and maybe even reaching freezing in some low lying areas of northern Iowa," Small said. He says it’s unusual for Iowa to experience frost in mid-May.
"Obviously, if we’re getting to record temperatures, it doesn’t happen all that often…it’s pretty late to have frost this far into May," Small said. After today’s rain, mostly dry conditions are expected through early next week – with high temperatures reaching the 70s on Monday and Tuesday.