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Denver weather: Record heat forecast for city; 100-degree temps forecast Saturday, Sunday

Heat advisory issued for Denver area on Saturday, Sunday by National Weather Service

From right, Adrien Curz, 4, and his brother Andrew, 7, of Denver enjoy the H2o Odyssey at City Park in Denver on Friday, June 20, 2025. (Photo by Hyoung Chang/The Denver Post)
From right, Adrien Curz, 4, and his brother Andrew, 7, of Denver enjoy the H2o Odyssey at City Park in Denver on Friday, June 20, 2025. (Photo by Hyoung Chang/The Denver Post)
Lauren Penington of Denver Post portrait in Denver on Tuesday, Aug. 6, 2024. (Photo by Hyoung Chang/The Denver Post)
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Triple-digit heat is forecast for Denver this weekend, with afternoon highs set to break records on Saturday and tie them on Sunday, according to the National Weather Service.

Temperatures are expected to hit 100 degrees in Denver on both Saturday and Sunday, .

A 100-degree temperature high on Saturday would break Denver’s July 25 record of 99 degrees, which was last tied in 1963, . That same heat would tie the city’s July 26 record on Sunday, which was set in 1910.

The hottest July temperature on record for Denver is 105 degrees, which the city hit on July 20, 2005, according to the weather service. That’s also the hottest temperature ever recorded in the city.

A will be in effect for Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Jefferson, Larimer and Weld counties from 10 a.m. to 9 p.m. Saturday, and again from 10 a.m. to 9 p.m. on Sunday, according to the weather service.

Temperature highs from 99 to 103 degrees are forecast across the Denver area and near Boulder, Fort Collins and Greeley, forecasters wrote in the advisory.

Overnight temperatures will also be warm, with expected lows in the upper 60s and lower 70s, .

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