Very Warm to Hot Temperatures Today for Mariposa, Oakhurst and Yosemite Valley
Mariposa: Sunny and hot today with a high temp of around 101 degrees today with a low temp of around 63 degrees. Possible wind gusts up to 15 mph tonight.
Yosemite Valley: Increasing clouds today with a high temp of around 98 degrees with a low temp of around 59 degrees.June 27, 2020 - The National Weather Service Hanford Office reports widespread triple digit heat will impact the San Joaquin Valley this afternoon.
A Heat Advisory is in effect for the San Joaquin Valley and Sierra Nevada foothills until 8:00 P.M. this evening.
A cooling trend is expected Sunday and Monday.
Area Forecast Discussion National Weather Service Hanford CA 242 AM PDT Sat Jun 27 2020 .SYNOPSIS...Hot and dry weather will prevail over the central California interior today. Sunday and Monday will trend much cooler with gusty winds across the region on Sunday. The rest of next week will be dry with temperatures recovering to near normal by midweek. && .DISCUSSION...IR imagery indicating mainly clear skies across our area overnight as high pressure strengthens over our region for one day. Rises in heights and thicknesses will result in maximum temperatures between 104 and 107 DEG F across much of the San Joaquin Valley and Kern County Deserts today as well as triple digit heat for the Sierra foothills. A Heat Advisory remains in effect for the San Joaquin Valley and Sierra foothills until 800 pm this evening. A big change is expected on Sunday and Monday as an upper low pressure system pushes through the PAC NW and forces the upper ridge that has been responsible for the widespread triple digit heat over the San Joaquin Valley and Kern County Deserts retrogrades westward and an upper trough deepens over CA and a strong cold front pushes through the area on Sunday afternoon. As the front approaches the area this afternoon and evening, a surge of marine cooled air will push into the West Side Hills and bring a period of increased winds and patchy blowing dust this evening through Sunday morning. A Wind Advisory has been issued for the West Side Hills from late this afternoon through Sunday morning. Increased winds and blowing dust are also possible along the ridges in the Kern County Mountains from Tehachapi northward and in the Kern County Deserts Sunday afternoon and evening as the cold front moves through. Besides the increased winds, the main impact from this system will be much cooler temperatures. In fact, temperatures are expected to drop to below normal levels by Sunday and cool even further across much of our area on Monday with afternoon highs expected to be 8 to 10 DEG F below normal. The proximity of the upper trough will provide for enough instability for a slight chance of showers across the higher elevations of the Sierra Monday afternoon. The trough is progged to move east of the region on Tuesday and Wednesday with a dry northwest flow prevailing over central CA. Temperatures will rebound to seasonal normals by Wednesday and trend slightly above normal for the latter portion of next week the medium range models are in fairly good agreement with a dry southwest flow prevailing over our area as we remain situated in between a strong ridge over the central CONUS and an upper trough off the PAC NW coast. Source: NWS