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IOWA PRELIMINARY WEATHER SUMMARY

Written by on August 28, 2012 in News

By Harry Hillaker, State Climatologist, Iowa Department of Agriculture & Land Stewardship

Widespread significant rainfall finally arrived over parts of Iowa over the past weekend. Rain moved into far western Iowa late Friday (24th) and exited the southeast corner of the state Sunday (26th) afternoon. Heaviest rain fell over southwest and far southern Iowa with Lamoni reporting 8.14 inches. The excessive rain at Lamoni fell almost all on Sunday morning but was confined to a very small area. Rain amounts were relatively light over much of northern and central Iowa. Mason City Airport reported the smallest total with only 0.04 inch. Additionally some light rain also fell across the northeast one-half of Iowa last Sunday (19th) and over extreme northeastern Iowa on Monday (20th). Dry weather prevailed statewide from Monday afternoon until Friday afternoon. The statewide average rainfall for the week was 1.29 inches while normal is 0.91 inches. This was the wettest week in ten weeks and only the second week of the past 15 weeks to average greater than normal rainfall. Meanwhile the past reporting week began unseasonably cool on Monday (20th) and Tuesday (21st) thanks to very low overnight temperatures. Elkader reported the week’s lowest temperature with a Tuesday morning low of 39 degrees. By mid week daytime highs were generally in the nineties but low humidities allowed overnight temperatures to drop into the 40s and 50s. Much more humid air arrived by late in the week with temperatures averaging a few degrees above normal. Temperatures for the week as a whole averaged very slightly below normal over the far southeast to three degrees above normal over the far northwest with a statewide average of 0.8 degrees above normal.

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