Kansas City/ Weather & Environment

Calm Before the Boom: Kansas City Braces for Searing Heat, Flood-Fueling Storms

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Published on September 13, 2026
Calm Before the Boom: Kansas City Braces for Searing Heat, Flood-Fueling StormsSource: Google Street View

Kansas City is starting Sunday, but the calm will not last all week. Precipitation should decrease during Sunday, though thunderstorms remain possible in northern Missouri, followed by Monday heat and several rounds of storms.

The National Weather Service Kansas City/Pleasant Hill office says precipitation should decrease during Sunday, with possible afternoon thunderstorms in northern Missouri.

Storm Chances Return Sunday Night

Overnight, renewed convective development is possible.

Monday starts with another chance of showers and thunderstorms before 8 a.m., then turns mostly sunny and hot. The high is expected to reach 90, with heat-index values that may reach 100 to 105 degrees on Monday and Tuesday along and south of the I-70 corridor.

A Wetter Stretch Takes Over Tuesday And Wednesday

Tuesday brings a much better chance of rain, with showers likely during the day and thunderstorms possible later, followed by another round of storms Tuesday night.

Showers and thunderstorms remain likely Wednesday before the pattern gradually becomes less active later in the week.

Flood Risk Builds North Of The Missouri River

Forecasters say the broader region faces an increasing risk of heavy rain from Tuesday night into Wednesday, especially across northern Missouri and northeastern Kansas. Repeated storms could produce 3 to 5 inches of rain in parts of northern Missouri, mainly north of the Missouri River, raising concerns about flash flooding.

No watches or warnings are currently posted for the Missouri or Kansas portions of the forecast area. For Sunday plans, light layers and a rain option should cover most situations, but anyone heading out Monday or during the midweek storm window should keep an eye on updated forecasts.