Sunday Projected High Temp for Mariposa: 107 Degrees
Sunday Projected High Temp for Oakhurst: 108 Degrees
Sunday Projected High Temp for Yosemite Valley: 108 Degrees
September 6, 2020 - The National Weather Service Hanford Office reports at or above record heat is almost certain to occur today at multiple locations across the San Joaquin Valley.
Extremely high temperatures over 110 degrees across the valley will lead to dangerous outdoor conditions, especially to those prone to heat-related illness.
Area Forecast Discussion National Weather Service Hanford CA 257 AM PDT Sun Sep 6 2020 .SYNOPSIS... Record heat is likely in most of Central California today and Labor Day. A downward temperature trend is expected Tuesday through Saturday. Be that as it may, temperatures will remain above seasonal values. Smoke from adjacent wildfires will continue to plague Central California through at least Wednesday. Dry weather will persist for the foreseeable future. && .DISCUSSION... An anticyclone aloft over the Great Basin will move westward today and tonight. The upper-level area of high pressure will open up into a ridge of high pressure over California on Labor Day, before progressing westward into the Eastern Pacific Ocean Monday night. Record heat is likely in Fresno, Merced, Hanford, and Madera today. Daily records for maximum temperatures ever measured on September 6th range from as "low" as 105 degrees in Hanford to as high as 108 degrees in Merced. Near record heat is probable in Bakersfield today. In addition, we are forecasting a high temperature of 112 degrees in Fresno this afternoon. This would break the record for maximum temperature ever measured in Fresno during the month of September. The current record of 111 degrees was initially established on September 11th, 1888, and last observed on September 3rd, 1955. Record heat is likely in Fresno, Hanford, and Madera on Labor Day. Daily records for maximum temperatures ever measured on September 7th range from as "low" as 106 degrees in Hanford to as high as 108 degrees in Fresno and Madera. Near record heat is probable in Bakersfield and Merced on Labor Day. The brutal heat coupled with smoke impacts from wildfires in the Sierra Nevada will make the outdoors unbearable this weekend into early next week. Stay indoors, if at all possible. One more thing, a Wind Advisory may be required for a portion of the Kern County mountains and desert Monday afternoon and Monday night. A trough of low pressure will dive southward into the Desert Southwest Tuesday. This should cause winds to turn to the east-northeast and increase over the eastern portion of Kern County. These winds may advect a very dry airmass into the Kern County mountains, resulting in elevated or critical fire weather conditions for at least Tuesday afternoon into Tuesday night. Right now, the projected wind direction does not support a Mono wind event in the Sierra Nevada. An area of high pressure will be located just offshore of the Pacific Northwest Wednesday through Thursday night. This area of high pressure will move eastward Friday into the upcoming weekend. Maximum temperatures Tuesday afternoon will be around five degrees lower than Monday afternoon. Regardless, a Heat Advisory may be required for the San Joaquin Valley and West Side Hills Tuesday. A downward temperature trend should continue Wednesday through Saturday. Be that as it may, widespread triple digit heat is expected in the San Joaquin Valley and West Side Hills Wednesday afternoon. High temperatures Thursday afternoon and Friday afternoon should be seven to nine degrees above normal for this time of year. Maximum temperatures Saturday afternoon will be around five degrees above normal for this time of year. Dry weather will persist through at least the next seven days.Source: NWS
