# Weather forecast for Upper Midwest thunderstorms

> Live situation record from CLSTR: https://clstr.news/situations/weather-forecast-for-upper-midwest-thunderstorms
> Updated: 2026-09-06T21:15:43.000Z. Sources: 12. Developments: 3.

The Upper Midwest, specifically regions including Minnesota and Iowa, is expected to transition from warm, clear conditions to thunderstorm activity. 

Forecasts indicate that thunderstorms are likely to move through the region during Thursday evening. There is a risk of severe storms, particularly near the I-35 corridor, which may produce large hail, heavy rain, and wind gusts up to 60 mph. In the Twin Cities area, the risk for strong to severe storms is noted between 8 p.m. and 11 p.m.

Following the storm activity, weather conditions are projected to improve, leading into a sunny and comfortable weekend with highs in the upper 70s to low 80s and low humidity. This stable pattern is expected to persist into the following week.

Later in the season, weather patterns across Iowa and southern Minnesota have shifted toward active storm cycles and fluctuating temperatures. In southern Minnesota and northern Iowa, showers and thunderstorms have moved through the region, resulting in significant rainfall and flash flood warnings for counties including Faribault, Emmet, and Palo Alto.

In Iowa, a cold front moving through a hot, humid air mass is expected to trigger organized rounds of thunderstorms, with central and eastern Iowa facing the highest potential for severe weather. Prior to the arrival of this front, heat indices in central and southern Iowa may approach or exceed 100 degrees. A cold front is expected to eventually bring a noticeable drop in temperatures and more stable conditions later in the week.

## Timeline

### 2026-09-06: Iowa and Minnesota face thunderstorms and heat

Iowa and southern Minnesota are experiencing active weather, including thunderstorms, heavy rain, and high heat indices, followed by a cold front that will bring cooler temperatures later in the week.

2 sources. https://clstr.news/cluster/iowa-and-minnesota-face-thunderstorms-and-heat

### 2026-08-19: Minnesota and Iowa weather forecast: Storms expected Thursday

Warm weather in Minnesota and Iowa will give way to potential severe thunderstorms Thursday evening, followed by a sunny and pleasant weekend with highs near 80 degrees.

8 sources. https://clstr.news/cluster/minnesota-and-iowa-weather-forecast-storms-expected-thursday

### 2026-08-19: Thunderstorms forecast for evening followed by sunny weekend

Scattered thunderstorms may become severe this evening, bringing potential hail and wind, followed by a sunny and comfortable weekend with temperatures in the upper 70s to low 80s.

3 sources. https://clstr.news/cluster/thunderstorms-forecast-for-evening-followed-by-sunny-weekend

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Cite as: Weather forecast for Upper Midwest thunderstorms. CLSTR, https://clstr.news/situations/weather-forecast-for-upper-midwest-thunderstorms