9/10/26 - Meteorological Summer Recap

[00:00:27] This Day in Iowa Weather History: Early frost event of September 10, 1976; record lows across multiple stations.

[00:01:27] Short-term outlook: No frost risk for Iowa in the next week; 8–14 day hazards show cold risk only in northern Minnesota/Dakotas.

[00:01:47] 7-day forecast headline: Shift to widespread low-pressure systems and fronts; 0.75–2 inches of rain possible; temps cooling toward or slightly below normal.

[00:02:39] Extended outlook: 6–10 day (Sept 15–19) leans warm/wet; 8–14 day (Sept 17–23) near-normal temps with a slight wet signal; slight heavy-precip risk Sept 17–19.

[00:03:31] 3–4 week guidance: Leans warm; no clear precipitation signal.

[00:03:56] Past week recap: Very localized heavy rain in central Iowa (up to ~5–6 inches in parts of the metro) after a hot start to September.

[00:06:42] Weekly extremes: High 100°F at Shenandoah (Sept 8); low 53°F at Lake Park (Sept 9); highest precip 7.69" at Guthrie Center; SE Iowa saw little to no rain.

[00:08:24] Meteorological summer review: Statewide avg temp 72.7°F (+1.3°F; tied 54th warmest); precip 14.32" (+0.76"; 39th wettest); Des Moines area (Climate Division 5) had 11th wettest summer.

[00:10:46] Growing season impacts: Wet periods drove foliar diseases, root rots, and pest pressure; mixed reports on corn rootworm and Japanese beetles; tough year for tomatoes; pumpkins faring better.

[00:12:24] Coming next week: Summer "Glory Index" breakdown using airport sites (NW, NE, SW, SE, plus Des Moines).

[00:13:20] Specialty crop tips:

[00:13:23] Top Brussels sprouts in mid-September to improve uniform bulking.