September 11, 2020
Summary: The combination of smoke and some high clouds yesterday lowered temperatures a few degrees below model expectations. That will continue to be a challenge over the next several days. The Mammoth Creek fire and others burning around the state will continue to result in very poor air quality and low visibility.
Upper level high pressure continues to hover over California with a low pressure system several hundred miles off the Oregon/northern California coast. Most models this morning show the high firming up just a bit for a slow warming trend over the weekend. Average temperatures have fallen into the low 90s and it appears we will be right around 2 to 3 degrees near that level beginning Sunday.
By Wednesday, a low pressure system will be approaching the northern California coast. It will move slowly across northern California Thursday and Friday. This should allow a burst of marine air to move down the valley Thursday along with lowering pressure aloft for our next cooling trend. Some models suggest readings in the mid to upper 80s by the latter part of next week.
Winds aloft will be mainly out of the west or southwest next week, continuing to prevent moisture from moving in from the south.
Forecast: Mostly clear but hazy through Monday. Mostly clear and hazy Tuesday through Friday.
Short Term:
| Madera 87/54/91/58/92 | Reedley 87/54/91/58/91 | Dinuba 86/53/90/59/92 |
| Porterville 88/54/91/57/92 | Lindsay 88/53/92/59/93 | Delano 89/59/92/62/93 |
| Bakersfield 89/65/92/68/94 | Taft 88/68/91/69/93 | Arvin 90/58/92/61/94 |
| Lamont 88/61/91/64/94 | Pixley 88/55/91/58/92 | Tulare 87/54/91/58/92 |
| Woodlake 87/55/91/58/91 | Hanford 88/57/91/60/93 | Orosi 87/53/90/58/93 |
Seven Day Forecast:
| Monday
Mostly clear 58/94 |
Tuesday
Mostly clear 59/95 |
Wednesday
Mostly clear 56/90 |
Thursday
Partly cloudy 55/88 |
Friday
Partly cloudy 54/87 |
Two Week Outlook: September 17 through September 23: 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 Monday 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: Low to mid 50s.. Kern: Mid to upper 40s.
Actual Humidity Range September 10, 2020: Delano, 99%/32%, Porterville, 90%/33%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 100%. Bakersfield: Today: 100% Tomorrow: 100%
ET Rates Over the Past Seven Days: Stratford 1.46, Parlier 1.30, Blackwell Corner 1.52, Arvin 1.73, Orange Cove 1.25, Porterville 1.20, Delano 1.31. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 75, Parlier 80, Blackwell NA, Arvin, 81, Orange Cove NA, Porterville 77, Delano 75
Record Temperatures: 111/44. Average Temperatures: 92/60
Cooling Degree Days This Season: 1891 +454
Courtesy of the NWS
Average Temperature for September So Far: 80.8 +5.1
Precipitation: Seasonal total for Fresno/average + or -. 7.63 or -3.72. Month to Date: .T -.02
Since Oct 1, 2019, Fresno, 7.63 -3.69. 7.20, or +.84. Bakersfield, 7.20 +.80. Month to Date: .T -.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: 6:39 Sunset: 7:10 pm Hours of Daylight: 12:33
Yesterday’s Weather
MCE : Merced 153 : DH1700 / 85 / 58 / 0.00 /
MAE : Madera 253 : DH1700 / 82 / 57 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 86 / 67 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 84 / 58 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 84 / 59 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 85 / 67 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 81 / 59 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 85 / 60 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 81 / 61 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 8.35 61 18.37 133 13.80 14.06
MODESTO 0.00 6.94 54 13.35 104 12.88 13.11
MERCED 0.00 9.54 78 13.27 108 12.26 12.50
MADERA 0.00 6.02 51 11.42 97 11.81 12.02
FRESNO 0.00 7.63 67 11.85 104 11.35 11.50
HANFORD 0.00 6.62 67 9.50 95 9.95 10.10
BAKERSFIELD 0.00 7.20 113 7.82 122 6.40 6.47
BISHOP 0.00 2.25 45 8.48 169 5.01 5.18
SALINAS 0.00 9.18 72 13.80 109 12.67 12.83
PASO ROBLES 0.00 11.47 91 14.88 118 12.57 12.78
SANTA MARIA 0.00 10.66 77 15.68 113 13.83 13.95
Next report: September 12/morning