Excessive Heat in Mountains Southwestern Shasta County To Western Colusa County, California

Weather stations in the area reported daytime high temperatures of 85 to 100 degrees across this zone, with overnight lows in the 60s to upper 70 degree range from June 4th through June 6th.

Excessive Heat from multiple days of hot daytime temperatures and very warm overnight temperatures was observed on June 4th through June 6th across much of interior Northern California. Daily maximum record temperatures were tied or broken, with Vacaville Airport reaching 104 degrees on June 5th, breaking the old record of 103 set in 2002. Marysville Airport reached 104 degrees on June 5th, which tied the old record of 104 set in 2002.