Midwest Weather Outlook: Illinois, Wisconsin & Indiana – Above-Normal Temps, Below Rainfall Ahead

NOAA outlook shows higher temps, reduced precipitation September 29–October 5.

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Chicago, IL – Residents across Illinois, Wisconsin, Indiana, and the broader Midwest should expect a warm and dry start to October, according to the latest outlook from the National Oceanic and Atmospheric Administration (NOAA).

According to NOAA’s 8–14 Day Outlook, issued Sunday, September 21, temperatures are projected to run above normal across much of the central United States from September 29 through October 5. The strongest chances for warmer-than-usual conditions extend into the Great Lakes and Midwest, signaling an early October stretch that may feel more like late summer than fall.

At the same time, precipitation is forecast to trend below normal across Illinois, Indiana, Wisconsin, and neighboring states. NOAA’s maps indicate that much of the Midwest will see reduced rainfall probabilities during the same period, raising concerns for ongoing dry conditions in parts of the region. While the western U.S. may experience wetter conditions, the Midwest is leaning toward a noticeably drier pattern.

The combination of higher temperatures and limited rainfall may affect early harvest activities, outdoor events, and fall foliage timing. While above-average warmth could extend outdoor recreation opportunities, the lack of rain may stress lawns, gardens, and agriculture.

NOAA updates its long-range outlooks regularly, and residents are encouraged to monitor local forecasts for changing conditions.

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