September 5, 2020
Summary: It’s possible we could see the hottest day of the year during the first week of September. More specifically, Sunday and possibly Monday. All systems are go for a blistering heat wave today through Monday. The marine layer, which was hovering around 2,000 feet, has now peeled back to 800 feet. Above the valley floor, some rather dramatic warming is taking place. Grapevine Peak at 4,000 feet was reporting a temperature of 79 degrees as of 6:00am. Bear Peak at 8,200 feet in Tulare County was reporting 69 degrees at that hour.
Very strong upper level high pressure is centered over southern Utah and is drifting slowly towards the west. On Sunday, the high will be centered over Nevada then over California Monday. Models are still suggesting hottest locations will hit 110 Sunday and possibly Monday. A vigorous low will drop southward from western Canada into the interior western U.S. This will push the high off shore for significant cooling beginning Tuesday. The winds aloft will be out of the northeast, resulting in lower humidity values. Even so, from Wednesday and beyond, a weaker low will blanket the eastern Pacific and California, maintaining above average temperatures through next weekend.
Forecast: Mostly clear and extremely hot through Monday. Mostly clear and somewhat cooler Tuesday through Saturday.
Short Term:
| Madera 105/74/ 109/75/109` | Reedley 105/72/110/75/109 | Dinuba 104/72/108/74/108 |
| Porterville 105/72/110/74/109 | Lindsay 104/71/109/74/109 | Delano 106/74/111/76/109 |
| Bakersfield 107/80/111/82/109 | Taft 104/84/109/85/108 | Arvin 107/74/112/78/110 |
| Lamont 106/77/111/78/109 | Pixley 105/73/110/74/109 | Tulare 104/71/108/74/108 |
| Woodlake 104/71/109/74/108 | Hanford 105/73/110/75/109 | Orosi 104/71/109/74/108 |
Seven Day Forecast:
| Tuesday
Mostly clear 67/101 |
Wednesday
Mostly clear 64/100 |
Thursday
Mostly clear 62/99 |
Friday
Mostly clear 62/99 |
Saturday
Mostly clear 63/98 |
Two Week Outlook: September 11 through September 17: This model indicates an amplified pattern with a big high over the western U.S. and a cool trough of low pressure east of the Rockies. This regime will keep temperatures above average with dry conditions.
September: This model is indicating basically the western half of the United States will have above average temperatures, continuing the trend of the summer season into the early fall. This model shows near average precipitation, which is minimal at best anyway.
September, October, November: This model always indicates above average temperatures for the western U.S. and this time around is no exception. As we head into the autumn season this model is indicating there will be equal chances of above or below precipitation.
Winds Discussion: Winds through Tuessday will be mainly out of the northwest at 5 to 12 MPH afternoons and evenings and 3 to 6 MPH nights and early mornings with periods of near calm conditions.
Rain Discussion: Expect dry conditions for the next 7 to 10 days.
Afternoon Dew Points Today: Mid to upper 50s Kern: Mid to upper 50s.
Actual Humidity range September 4, 2020: Delano, 99%/25%, Porterville, 93%/26%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 100%. Bakersfield: Today: 100% Tomorrow: 100%
ET Rates Over the Past Seven Days: Stratford 1.67, Parlier 1.48, Blackwell Corner 1.72, Arvin 1.81, Orange Cove 1.58, Porterville 1.40, Delano 1.51. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 76, Parlier 78, Blackwell NA, Arvin, 80, Orange Cove NA, Porterville 76, Delano 74
Record Temperatures: 105/47. Average Temperatures: 94/61
Cooling Degree Days this Season: 1792 +417
Courtesy of the NWS
Average temperature for September so far: 79.9 +3.9
Precipitation: Seasonal total for Fresno/average + or -. 7.63 or -3.71. Month to Date: .00 -.01
Since Oct 1, 2019, Fresno, 7.63 -3.69. 7.20, or +.84. Bakersfield, 7.20 +.80. Month to Date: .00 -.01
Water year season is from October 1st through September.
Chilling Hours November 1st through February 28: Orange Cove, Parlier, Arvin, Shafter, Stratford, Delano, Lindcove, Porterville
Hours at 45 or below 45.
Sunrise: 6:34, Sunset: 7:19 pm. Hours of Daylight: 12:47
Yesterday’s Weather:
MCE : Merced 153 : DH1700 / 98 / 62 / 0.00 /
MAE : Madera 253 : DH1700 / 97 / 61 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 98 / 70 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 99 / 63 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 100 / 62 / 0.00 /
BFL : Bakersfield Airport 496 : DH1600 / 97 / 72 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 96 / 65 / 0.00 /
ATEC1 : Avenal 787 : DH1624 / 96 / 68 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 98 / 66 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 96 / 63 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 8.35 61 18.37 133 13.77 14.06
MODESTO 0.00 6.94 54 13.35 104 12.85 13.11
MERCED 0.00 9.54 78 13.27 109 12.21 12.50
MADERA 0.00 6.02 51 11.42 97 11.77 12.02
FRESNO 0.00 7.63 67 11.85 105 11.33 11.50
HANFORD 0.00 6.62 67 9.50 96 9.93 10.10
BAKERSFIELD 0.00 7.20 113 7.80 122 6.39 6.47
BISHOP 0.00 2.25 45 8.47 170 4.98 5.18
SALINAS 0.00 9.18 73 13.80 109 12.66 12.83
PASO ROBLES 0.00 11.47 91 14.88 118 12.56 12.78
SANTA MARIA 0.00 10.66 77 15.68 114 13.81 13.95
Next report: September 7/morning