Excessive Heat in South Central Siskiyou County, California

On 07/09/21, the reported low temperatures in this zone ranged from 51 to 55 degrees and high temperatures ranged from 100 to 103 degrees. On 07/10/21, the reported low temperatures in this zone ranged from 58 to 60 degrees and high temperatures ranged from 103 to 106 degrees. On 07/11/21, reported low temperatures ranged from 60 to 68 degrees and the high temperatures ranged from 101 to 104 degrees. On 07/12/21, the reported low temperatures in this zone ranged from 53 to 59 degrees and the reported high temperatures ranged from 101 to 102 degrees. On 07/13/21, the reported low temperatures in this zone ranged from 55 to 62 degrees and the high temperatures ranged from 99 to 103 degrees. Mount Shasta City reported daily record highs from 7/9 through 7/12 with 100 degrees on the 9th, 103 degrees on the 10th, and 101 degrees on the 11th and 12th. The high of 99 degrees on the 13th tied the old record.

High pressure brought another long-lived heat wave to northern California.