Sioux Falls did, indeed, tie the warmest low temperature on record, with a low of 81° yesterday. This also breaks the daily record warm low for 8/22, previously 78° (1968).

Sioux City topped a long-standing record high, reaching 101°F. The previous record was 100° (1898/1914). pic.twitter.com/FUKt3GZ2AO

— NWS Sioux Falls (@NWSSiouxFalls) August 23, 2023