Record Heat and Floods
US Records Hottest September While Severe Floods Strike the Midwest
Anonymous
Key Points
1
September’s average temperature across the contiguous 48 states was about 3.5°F (1.9°C) above average, and the month followed what was also the hottest summer on record in the United States.
2
Lincoln, Nebraska, recorded 156.2 mm of rain on September 30, breaking its 1910 daily record; Lancaster County declared a state of emergency.
3
Vallecito Reservoir in Southwest Colorado rose about 18 feet—roughly 30,000 acre-feet—after the fall moisture, though officials said a good winter would still be important for the reservoir.
4
Alpena County recorded 2.03 inches of rain, 0.81 inches below its September normal; that total ranked as the county’s 31st-lowest on record.
September 2026 set a U.S. heat record while delivering sharply contrasting rainfall patterns. The contiguous 48 states averaged 3.5°F above normal, marking the hottest September on record, according to National Weather Service data. Yet some regions faced devastating floods: Lincoln, Nebraska, recorded 156.2 mm of rain on September 30 alone, breaking a 116-year-old daily record and prompting Lancaster County to declare a state of emergency QC Times. Meanwhile, Southwest Colorado welcomed unusually heavy moisture that replenished drought-stressed reservoirs after a dry summer.
The contrast reflects how climate change reshapes U.S. weather: extreme heat blankets much of the country while intense rainfall events become more frequent and dangerous. Hurricane Rachel strengthened to Category 3 off Mexico, threatening Gulf-adjacent regions with heavy rain, flooding, and landslides CBS News.
Record Heat Follows Hottest Summer
September's warmth capped an extreme summer. The entire season ranked as America's hottest on record, and September continued that trend with temperatures 1.9°C above average across the contiguous United States QC Times. This prolonged heat stress affects agriculture, power demand, and public health nationwide.
Midwest Flooding Triggers Emergency Declarations
Heavy rains from a decaying hurricane system battered Nebraska and Iowa in late September. Lincoln's 156.2 mm rainfall on September 30 obliterated the previous daily record set in 1910, overwhelming drainage systems and triggering dozens of rescues in Omaha QC Times. Authorities traced the moisture to Gulf conditions and hurricane remnants flowing northward.
Floodwaters swept across Kansas and Missouri as well, with Lancaster County, Nebraska, declaring a state of emergency. Officials warned that flash floods remain among the deadliest U.S. weather hazards, and recent years show clear trends toward more frequent and intense heavy-rainfall events Muscatine Journal.
Southwest Colorado's Drought Relief After Wet September
Southwest Colorado experienced its wettest September on record, according to the National Weather Service office in Grand Junction. Late-September rainstorms delivered steady precipitation that replenished regional reservoirs after a parched summer Durango Herald. Vallecito Reservoir rose roughly 18 feet—approximately 30,000 acre-feet— a significant gain that eased immediate water stress.
Officials cautiously welcomed the moisture but stressed that a strong winter snowpack would still be essential for long-term reservoir security. The regional dry stretch had cut irrigation seasons short, so September's rainfall provided critical relief at a key moment Durango Herald.
Localized Weather Patterns Show Uneven Impact
Not all regions experienced September's national trends. Alpena County, Michigan, recorded 2.03 inches of rain—0.81 inches below normal— making it the county's 31st-lowest September on record The Alpena News. The county averaged slightly warmer than normal temperatures overall, with a dry second half offsetting early-month rainfall.
Sentiment
Mostly NegativeNEGATIVENEUTRALPOSITIVE
Publishers
14
Articles
11
Reach
25
A
AnonymousAuthor
