Strong high pressure over interior northern California brought widespread high to very high heat risk to the region. Triple-digit high temperatures were observed across most of the Central Valley, Delta, and foothills through the first 9 days of September. The hottest temperatures were on September 5 and 6, when temperatures exceeding 110 were observed at many locations. All-time records were set on the 6th for Sacramento stations and tied in Stockton. Numerous daily and monthly record high-temperature were also set in the area. There was one death attributed to the heat in Sacramento County.

Excessive Heat in SHASTA LAKE/NORTH SHASTA COUNTY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Lake Shasta Dam saw high temperatures reach 100 to 111 degrees during the event. The hottest days were on the 6th when the high was 110 and 111 on the 7th; these were both daily records. Morning lows were also high, dropping only to 78 on the 8th and 80 on the 9th. The minimum of 80 was the highest ever in September, breaking the record of 79 set on the 10th in 2011.

Excessive Heat in BURNEY BASIN/EASTERN SHASTA COUNTY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Burney Basin region saw high temperatures reach 97 to 105 degrees during the event. The hottest day was the 6th, with a high of 105 at Soldier Mountain.

Excessive Heat in CENTRAL SACRAMENTO VALLEY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Central Sacramento Valley region saw high temperatures reach up to 115 degrees during the event. Low temperatures were in the low to upper 70s. The hottest day was on the 6th, with Marysville recording a high temperature of 115 and a low of 73, Oroville Municipal Airport 111 and a low of 75, Beale AFB 110 and low of 72, and at Chico Municipal Airport 111 and low of 75. Oroville COOP reported 113 on the 6th, with a low of 72,  with a high of 111 and a low of 79 on the 7th.

Excessive Heat in SOUTHERN SACRAMENTO VALLEY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Southern Sacramento Valley region saw all-time, monthly and daily record highs set, reaching up to 116 degrees during the event. On the 6th Downtown Sacramento recorded a high temperature of 116, which broke the all-time record high of 114 degrees set on July 17, 1925. This also broke the September record of 113 which was set the day before on the 5th. The previous monthly record of 109 was set on September 1, 1950, and tied on September 2, 1955 and September 6, 2020. The record of consecutive days over 110 was tied at 2. Daily highs were also set with 113 on the 5th and 8th and 109 on the 7th. The low of 80 on the 7th was the warmest on record in September and in all months was surpassed only on July 23, 2006, which had a low of 84. Sacramento International Airport set an all-time daily record high of 116 on the 5th and 6th, and also set a record of 4 consecutive days of 110 or higher. Sacramento Executive Airport set an all-time daily record high of 114 on the 5th and 6th. The Sacramento County Coroner attributed the death of one unhoused 49 year old man to the heat, having died while in a hospital.

Excessive Heat in CARQUINEZ STRAIT AND DELTA, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Delta regions saw high temperatures reach up to 116 degrees. Fairfield/Travis AFB reached 116 on the 5th and 6th, while the COOP station in Fairfield recorded 114 on each date. Highs remained above 100 from the 1st to the 10th. The highest low was 75 on the 7th at Fairfield COOP, and 76 at Fairfield/Travis AFB on the 6th.

Excessive Heat in NORTHERN SAN JOAQUIN VALLEY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Northern San Joaquin Valley saw high temperatures reach 102 to 115 degrees during the heat event, with all-time, monthly, and daily record highs set. The all-time record high of 115 for Stockton Airport was tied on the 6th, previously set on July 23, 2006. The monthly record high was broken, which was 114 on July 14, 1972. Daily records were also set on the 5th and 8th with highs of 112 and tied on the 4th with a high of 105, and 106 on the 9th. Stockton saw a mild low of only 79 on the 8th. Modesto Airport had a September record high of 112 set on the 6th, with daily record highs of 107 set on the 5th and 108 on the 8th, with a record-tying high of 107 on the 7th. Modesto saw a mild low of only 79 on the 8th.

Excessive Heat in MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO WESTERN COLUSA COUNTY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The western foothills of the Sacramento Valley saw high temperatures reach upwards of 100 to 114 degrees during the event, with very warm lows in the 80s. The hottest days were the 5th and 6th when Stonyford reached 114 and Eagle Peak reached 102 each day. On the 6th Eagle Peak had a low of only 88. Arbuckle Basin reached 102 on the 5th and 104 on the 6th, with a low of only 89 on the 6th.

Excessive Heat in NORTHEAST FOOTHILLS/SACRAMENTO VALLEY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The northeastern foothills of the Sacramento Valley saw high temperatures reach upwards of 106 to 112 degrees during the heat event, with very warm lows in the upper 70s to 90. The hottest days were the 5th and 6th. Cohasset had a high of 110 with a low of 86 on the 5th, a high of 112, and a low of 90 on the 6th.  Jarbo Gap had a high of 106 and a low of 77 on the 5th and a high of 109 and a low of 81 on the 6th.

Excessive Heat in MOTHERLODE/CAMPTONVILLE TO GROVELAND, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The Motherlode region saw high temperatures reach upwards of 109 to 115 degrees during the heat event, with lows in the upper 70s to mid-80s. The hottest days were the 5th and 6th: Auburn Airport high of 109 and a low of 77, then a high of 111 and a low of 82, Placerville Airport high of 104 and a low of 82, then a high of 108 and a low of 82, Reader Ranch high 113 and a low of 74 then a high 115 and a low of 76, and Nevada County Air Park in Grass Valley a high 104 and a low of 81 and then a high 108 and a low of 81.

Excessive Heat in MT SHASTA/WESTERN PLUMAS COUNTY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Portions of Western Plumas County and Lassen National Park saw high temperatures reach up to 97 to 108 degrees during the heat event, with ranging from the mid-60s to around 80.  The hottest days were the 5th and 6th: Quincy Road had highs of 107 and 108, Chester 101 each day, Lassen Lodge 105 and 104, and Cashman 103 each day.

Excessive Heat in WEST SLOPE NORTHERN SIERRA NEVADA, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Portions of the West Slope of the Northern Sierra saw high temperatures reach up to 95 to 107, with lows in the 70s to around 80.  The hottest days were the 5th and 6th. Blue Canyon had a high of 95 with a low of 78 on the 5th, a high of 96, and a low of 78 on the 6th. The previous monthly record high was 93 set on September 5, 2020, and the previous monthly record maximum low was 77 set on September 6, 2020. Other notable area high temperatures on the 5th and 6th: 103 and 105 at Bald Mountain, 105 and 107 at Beaver, 103 and 104 at White Cloud, and 103 and 105 at Elizabeth. Even Duncan RAWS at an elevation of 7,182 feet reached 90 and 89.

Excessive Heat in NORTHERN SACRAMENTO VALLEY, CALIFORNIA
From 04-SEP-22 10:00:00 to 09-SEP-22 19:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The Northern Sacramento Valley saw daily records broken, with high temperatures reaching 110 to 115 degrees, and with low temperatures reaching up to 90. Redding Airport reached 115 degrees on the 6th (old record 111 in 2020), with Red Bluff peaking at 114 (old record 113 in 2020). On the 8th Redding Airport reached 112 degrees (old record 109 in 1923), with Red Bluff peaking at 113 (old record 112 in 1944). On the 9th Redding Airport reached 112 degrees (old record 110 in 1944), with Red Bluff peaking at 112 (tying the old record of 112 in 1944). On the 9th Redding recorded a daily record high minimum temperature of 87 degrees and Red Bluff 82 degrees.