When will it cool down in San Antonio this year?

San Antonio’s average high doesn’t fall below 90 degrees until around Sept. 19, and overnight lows often stay in the 70s well into early fall. The Old Farmer’s Almanac, a 200-year-old publication known for its long-range seasonal forecasts, predicts September will run about 2 degrees warmer than normal across the Deep South, with near …

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