Highlights: A slow-moving storm drenched the interior Southeast, halting harvest activities, triggering lowland flooding, and threatening the quality of open-boll cotton. As much as 4 to 8 inches of rain fell from northeastern Texas to the southern Appalachians. Meanwhile, mostly dry weather returned to southern Texas, following the previous week's drought-easing rainfall.

Farther north, light rain reached the southern tier of the Corn Belt, but mild, dry weather elsewhere in the Midwest promoted corn and soybean maturation. Conditions were especially favorable in the upper Midwest, where weekly temperatures averaged as many as 10 degrees Fahrenheit above normal.
Remarkably warm weather (5 to 15 degrees Fahrenheit above normal) also prevailed across the northern Plains, where warmth aided late-developing summer crops in the Dakotas and encouraged small grain planting and harvesting efforts throughout the region. Fieldwork also advanced across the remainder of the Nation's mid-section, except on the southeastern Plains, where heavy showers lingered. Elsewhere, warm, dry weather across much of the West favored late-summer fieldwork, including Northwestern winter wheat planting and California's rice harvest. Significant Western precipitation was confined to the southern Rockies.

Early in the week, record-setting warmth lingered in the Northwest, where daily-record highs in Washington for September 13 included 94 degrees Fahrenheit at both Omak and Wenatchee. Meanwhile, a cold front reached the Pacific Coast, producing daily-record totals for September 13 in northern California locations such as Eureka (0.99 inch) and San Jose (0.21 inch).

The following day in California, records for September 14 reached 0.20 inch in both Hanford and Modesto. Farther south, enough rain (1.25 inches) fell in Albuquerque, New Mexico, on September 16-17 to result in the tenth-wettest 2-day period on record in September in that location. Meanwhile, locally heavy rain persisted in the Mid-South and spread into the Southeast.

Southern records for September 14 included 4.14 inches in Longview, Texas, and 2.07 inches in Huntsville, Alabama. As the week progressed, other impressive daily-record totals included 4.82 inches (on September 15) in Texarkana, Arkansas, and 5.92 inches (on September 17) in Pensacola, Florida.

On September 16, rainfall in Arkansas reached 8.41 inches in Mena and 6.83 inches in Searcy. Selected weekly (September 13-19) totals climbed to 5.05 inches in Athens, Georgia; 7.59 inches in Greenwood, Mississippi; 8.70 inches in Searcy; and 9.29 inches in Pensacola. By week's end, September rainfall records had been broken in Arkansas locations such as Pine Ridge (14.28 inches; previously, 12.13 inches in 1945) and Danville (11.65 inches; previously, 9.93 inches in 1925). By September 21-22, severe flooding developed in parts of Georgia's Chattahoochee River basin, where December 1919 all-time-record crests were surpassed in locations such as Whitesburg and Vinings. In stark contrast, no measurable rain fell during the first 19 days of September in La Crosse, Wisconsin, and Rochester, Minnesota. La Crosse previously set a record in 1893 by starting September with 16 dry days, while Rochester opened September 1998 with a then-record 18 days without measurable precipitation.

Warmth was most persistent across the northern Plains and northern Intermountain West, although heat also returned to Deep South Texas.

McAllen, Texas (100, 103, and 101 degrees Fahrenheit), posted a trio of daily-record highs from September 14-16. Farther north, temperatures occasionally topped 95 degrees Fahrenheit in Montana, where daily-record highs included 99 degrees Fahrenheit (on September 17) in Havre and 97 degrees Fahrenheit (on September 18) in Simpson. Elsewhere, late-week records reached 93 degrees Fahrenheit in Reno, Nevada (on September 18); San Francisco, California (on September 18); and Williston, North Dakota (on September 19). In contrast, cool air twice overspread the Northeast, resulting in daily-record lows of 29 degrees Fahrenheit in locations such as Caribou, Maine (on September 17), and Watertown, New York (on September 19).

Mild, mostly dry weather prevailed across the Alaskan mainland, where temperatures averaged as many as 7 degrees Fahrenheit above normal.

Daily-record highs were set in locations such as McGrath (69 degrees Fahrenheit on September 15) and King Salmon (63 degrees Fahrenheit on September 19). In south-central Alaska, Kodiak was an exception to the mostly dry pattern, with the 3.48-inch weekly rainfall aided by a 2.26-inch total on September 16. Farther south, cool, generally dry weather covered Hawaii. On Maui, Kahului (59 and 62 degrees Fahrenheit) posted consecutive daily-record lows on September 15-16. On the Big Island, Hilo's weekly rainfall of 1.05 inches left its September 1-19 sum at 4.57 inches (77 percent of normal).