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Hot, dry July gives way to cooler, wetter August

Ag/Outdoor, News, Weather

August 3rd, 2020 by Ric Hanson

(Radio Iowa/KJAN) – With low temperatures this (Monday) morning in the 40s and 50s across Iowa, it’s becoming clear that August could contain a radical shift from the extreme heat of July. State climatologist Justin Glisan says July wrapped up on Friday being much warmer and drier than normal. “Typically, we expect the temperature to be around 74 degrees, the average temperature for the state, and it’s looking like anywhere from two to three degrees above average, depending on where you are in the state,” Glisan says. “In terms of precipitation, the story of the month is drought conditions creeping into western Iowa.”

The month of July in Atlantic was warmer and drier than usual. Data for the month compiled at the KJAN Studios show Atlantic’s High for July was 88 degrees, or about 2 degrees warmer than normal. The average Low was nearly spot-on, 63. But the average rainfall, well, the bucket was very shallow last month. Normally we see around 4.62 inches. Last month, was only received 1.22 inches here at KJAN. During the month of August, Atlantic will typically see 3.88 inches of rain (but we know this year has been anything but “typical”).  Our average High is normally 83 and the average Low is 72.

The latest surveys show more than half of Iowa is either in drought already or has very dry conditions, with the worst areas being in western Iowa and moving eastward. “Typically, we expect four-and-a-half inches of rainfall across the state and there are parts of the state that only received 25% of what they normally would get in July,” Glisan says. “There are pockets in west-central Iowa that are anywhere from three to four inches below average.” Coming out of the hotter, drier July, Glisan says August promises to be a cooler, wetter month. “That would be an absolute gift for our drought region. We have 22 counties that are currently in D-2 drought, which is severe drought,” Glisan says. “Cooler temperatures and more rainfall would help mitigate any kind of crop stress that we’re seeing out there but it would also help improve the drought conditions that we’re seeing.”

High temperatures for the week ahead are expected to be in the 70s and low 80s with mostly dry conditions in the forecast.