A large area of high pressure strengthened off the California coast on June 29 then build inland into California on June 30. This resulted in the first heat wave of the season across the area between June 30 and July 3.  High temperatures across the San Joaquin Valley, lower Sierra foothills, West Side Hills and the Kern River Valley were generally between 102 to 107 degrees on June 30.

Heat in COALINGA - AVENAL, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in WEST SIDE OF FRESNO AND KINGS COUNTIES, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in CARUTHERS - SAN JOAQUIN - SELMA, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in FRESNO - CLOVIS, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in WEST SIDE MOUNTAINS SOUTH OF HIGHWAY 198, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in BUTTONWILLOW- LOST HILLS - I5, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in DELANO - WASCO - SHAFTER, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in HANFORD - CORCORAN - LEMOORE, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in VISALIA - PORTERVILLE - REEDLEY, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in BUENA VISTA, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in BAKERSFIELD, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in SOUTHEAST SAN JOAQUIN VALLEY, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in SOUTH END SAN JOAQUIN VALLEY, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in MARIPOSA - MADERA FOOTHILLS, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in FRESNO - TULARE FOOTHILLS, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in SOUTH END SIERRA FOOTHILLS, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in KERN RIVER VALLEY, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in WEST SIDE MOUNTAINS NORTH OF HIGHWAY 198, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in LOS BANOS-DOS PALOS, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in MERCED-MADERA-MENDOTA, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.

Heat in PLANADA-LEGRAND-SNELLING, CALIFORNIA
From 30-JUN-23 10:00:00 to 30-JUN-23 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Daytime highs ranged between 102 and 107 degrees on June 30.