Wyoming and Nebraska Record Wettest September Storm in More Than 10 Years

CHEYENNE, Wyo. – A powerful September storm has delivered record-breaking rainfall across parts of southeastern Wyoming and western Nebraska, making it the wettest September storm in more than a decade.

According to the National Weather Service in Cheyenne, daily rainfall records were broken in Chadron, Nebraska and Rawlins, Wyoming on Monday, September 22. Additional records were set the following day in Cheyenne, Laramie, and Rawlins.

Rainfall Totals Across the Region

Cheyenne reported 0.93 inches on Tuesday, bringing its two-day total to 0.97 inches. Laramie collected a full 1 inch of rain, while Rawlins logged 0.99 inches over the two-day period.

Chadron saw the largest single-day total, recording 2.77 inches on Monday alone.

Other rainfall reports included:

• Douglas: 0.88 inches
• Sidney: 0.38 inches
• Scottsbluff: 0.05 inches

Communities along the North Platte River Valley, including Torrington, Scottsbluff, and Alliance, largely avoided the heavier rainfall, with only light amounts recorded.

Meteorologists Note Rare September Storm

Forecasters emphasized that storms of this strength are rare for September, making the widespread records especially notable. While the rain provided short-term relief for dry conditions, officials confirmed that no major flooding issues were reported.

Forecast Moving Forward

With the storm system now moving east, meteorologists expect calmer, drier conditions to return for the remainder of the week.

Officials say while this event offered temporary drought relief, it underscores how unpredictable late-season weather systems can be across the High Plains.

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