Mariposa projected high temperature for Friday: 79 degrees and Saturday: 85 degrees

Oakhurst projected high temperature for Friday: 79 degrees and Saturday: 85 degrees

Yosemite Valley projected high temperature for Friday: 71 degrees and Saturday: 77 degrees


September 20, 2019 - The National Weather Service Hanford Office reports a warming trend throughout Central California will commence today.

Afternoon highs will increase to near seasonal average by Saturday, with highs around 90 degrees.

---

  Area Forecast Discussion 
  National Weather Service Hanford CA 
  232 AM PDT Fri Sep 20 2019 
   
  .SYNOPSIS... 
  High temperatures this afternoon will be around five degrees below 
  normal for this time of year. A warming trend is expected this 
  weekend. Temperatures should drop back down to seasonal values 
  Monday. Rain showers and high elevation snow showers are possible 
  in the Southern Sierra Nevada Monday and Tuesday. Outside of the 
  mountains, dry weather will persist.  
   
  && 
   
  .DISCUSSION... 
  An upper-level area of low pressure over Southern Idaho will move 
  east-northeastward this afternoon. Maximum temperatures this 
  afternoon will be around five degrees below normal for this time 
  of year. A warming trend is expected this weekend as an Eastern 
  Pacific ridge of high pressure aloft moves eastward through the 
  Western United States. High temperatures Sunday afternoon should 
  be around five degrees above their typical values for the latter 
  half of September. Dry weather will prevail throughout Central 
  California today through at least Sunday.  
   
  An upper-level area of low pressure should progress southward 
  across Nevada Monday. There may be enough atmospheric instability 
  and moisture for rain showers and high elevation snow showers 
  Monday in the Southern Sierra Nevada of Mariposa, Madera, and 
  Fresno Counties. The area of low pressure aloft will stall over 
  the Desert Southwest Tuesday. As a result, precipitation chances 
  will also shift southward. There could be enough atmospheric 
  instability and moisture for rain showers and high elevation snow 
  showers Tuesday afternoon into Tuesday evening in the Southern  
  Sierra Nevada of Fresno and Tulare Counties. A few showers cannot  
  be ruled out in the Kern County mountains and desert Tuesday 
  afternoon into Tuesday evening.  
   
  High temperatures Wednesday afternoon should be six to nine 
  degrees above normal for this time of year. A rather strong, 
  upper-level area of low pressure may begin to move southward near 
  the west coast of Canada Thursday. This may allow temperatures to 
  return to seasonal values Thursday. In addition, strong, gusty 
  winds are conceivable in the Kern County mountains and desert 
  Thursday afternoon into Thursday night.

Source: NWS