By late afternoon, winds were gusting out of the northwest, dropping the relative humidity with highs holding in the low to mid 80s under sunny skies.Īn isolated complex of thunderstorms pushed into extreme northeastern Iowa around sunrise on Thursday (21st), producing a pocket of moderate rainfall a gauge in Decorah (Winneshiek County) measured 0.66 inch. Winds again shifted, turning westerly into the early hours of Wednesday (20th) with lows holding in the mid 60s northwest to low 70s southeast as the sun rose. Afternoon conditions were muggy with temperatures hitting the low 90s in southern Iowa with slightly cooler conditions in northwestern Iowa, behind the passing front. The low skirted the Iowa-Minnesota border through the day with isolated thundershowers forming along the attendant cold front in north-central Iowa several stations picked up a few hundredths of an inch. Southerly winds increased through the latter part of the day, helping hold Tuesday (19th) morning temperatures in the upper 60s and low 70s. A shifting southerly wind and generally clear skies pushed highs into the upper 80s and low 90s as a low pressure center approached southern Minnesota from the Dakotas. Overnight temperatures into Monday (18th) dropped into the low to mid 60s with pockets of fog at stations in southern Iowa. Daytime temperatures remained in the low to mid 80s with a light northerly wind. Light rain showers pushed out of southeastern Iowa by noon on Sunday (17th) with partly cloudy skies persisting through the afternoon and evening. Many counties along the Iowa-Missouri border missed out on rainfall with departures approaching one inch with up to 0.50 inch at the remaining stations.
Rain fell over much of the state, though only the northeastern corner measured above-average totals from stronger thunderstorms. The statewide average temperature came in at 77.2 degrees, 2.7 degrees above normal. Iowa experienced hot and humid conditions for much of the reporting period with positive departures of up to six degrees across the state. Iowa Weekly Growing Season Report Preliminary weather summary for the week ending July 24, 2022