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Shown are forecast heat index values Friday afternoon across Southeast Texas, according to the National Blend of Models. Heat index values Friday and Saturday top out over 100 degrees for many areas.

Photo by: WeatherBELL

Heat index will top 100 in Houston. How much hotter will it get?

If you are hoping to grill some brats or run through the sprinkler during Father's Day weekend, the weather shouldn't slow you down.

Notice: You're receiving this as part of the Chronicle's expanded weather coverage, launched in partnership with the San Antonio Express-News. We provide daily forecasts, data-driven explainers on weather events in Houston and a weekly newsletter to help you navigate your daily lives. To read more, click here.