June 30, 2018
Summary: The modified marine air which was partially responsible for the minor cool down the past couple of days has now mixed out. Upper level high pressure off the northern California coast is currently building inland. This will result in the return to triple digit temperatures today through Monday. Already this morning, temperatures are anywhere from 3 to 9 degrees warmer than 24 hours ago. Temperatures will peak Sunday then, as the high begins to retrograde, or move back over the eastern Pacific Ocean, a weak low center will develop over the Pacific Northwest. It will eventually extend a very weak trough into northern and central California about midweek. Temperatures will lower down to seasonal levels.
Models for the period beginning next weekend are very typical for the summer months. A strong upper high will build over the Four Corners region and expand westward to the Pacific coast. The forecast will become a bit tricky in trying to determine how far west the high will extend. If it extends far enough to the west, there would be an increasing chance of monsoon moisture working its way into southern and central California for a chance of thunderstorms over the mountains. If it does not extend that far to the west, a dry southwesterly flow will prevail. Most models this morning indicate the dry southwesterly flow will win out. Regardless, this is a pattern that typically results in hot weather.
Forecast: Mostly clear through Tuesday. Mostly clear Tuesday night through Saturday.
Short Term:
| Madera 101/65/103/66/100 | Reedley 102/66/103/68/101 | Dinuba 100/64/102/65/100 | |
| Porterville 102/66/104/68/101 | Lindsay 101/65/103/67/101 | Delano 102/68/103/69/101 | |
| Bakersfield 102/73/104/74/101 | Arvin 102/70/105/72/102 | Taft 101/76/104/77/101 | |
| Lamont 102/70/105/72/102 | Pixley 101/66/104/67/101 | Tulare 100/64/102/65/100 | |
| Woodlake 101/65/103/67/100 | Hanford 102/66/104/67/101 | Orosi 100/65/103/67/100 | |
Seven Day Forecast:
| Tuesday
Mostly clear 66/98 |
Wednesday
Mostly clear 63/95 |
Thursday
Mostly clear 61/94 |
Friday
Mostly clear 65/98 |
Saturday
Mostly clear 66/100 |
Two Week Outlook: July 7 through July 13: For the past couple of model runs, there has been an indication of a strong high over the Four Corners region setting up a southeastern flow over southern and central California. This would favor monsoon moisture moving into central California, however precipitation is typically confined to the mountain areas. However, on rare occasions measurable rain occurs on the valley floor. For now, I’m not calling for this, but just explaining a pattern change which will also result in above average
June: As we head into the summer months, it appears this June will be mostly dry, as is typical. Models are projecting higher than average pressure patterns during the month so look for temperatures, generally speaking, to be above average.
June, July, August: All summers are hot in the San Joaquin Valley, and typically very dry. This summer will be no exception. If there’s any tendency on modeling at all it would be that upper level high pressure would be marginally stronger than average with temperatures also running marginally above average. The monsoon season will begin in several weeks so it’s impossible to tell it will be an active one this year. We’ll just have to wait and see.
Winds: Winds will be generally at or less than 15 MPH through Tuesday and generally out of the northwest afternoons and evenings.
Rain: Expect dry conditions indefinitely
Afternoon Dew Points Today: Low to mid 50s. Kern: Low to mid 50s.
Humidity: Visalia: 20%/70% Bakersfield: 20%/50%
Actual Humidity June 28, 2018: Delano, 80%/28%, Porterville, 71%/17%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100% tomorrow 100% Bakersfield: Today: 100% Tomorrow: 100%
ET Rates Over the Past Seven Days: Stratford 2.25, Parlier 2.08, Blackwell 2.47, Lindcove 2.03, Arvin 2.29, Orange Cove 2.28, Porterville 1.98, Delano 2.02, Madera Two NA. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 73, Parlier 78, Blackwell 86, Lindcove, 76, Arvin, 84, Orange Cove 76, Porterville 82, Delano 77, Madera Two, NA
Record Temperatures: 110/49. Average Temperatures: 96/64
Cooling Degree Days this Season: 582 +132 Courtesy of the NWS
Average temperatures for June so far, 76.8 +2.4
Precipitation: Seasonal total/average/above or below average:
Since July 1, 2017 Fresno: 6.73 season. or -4.58. Month to Date: .00
Since July 1, 2017, Bakersfield: 3.93, or -2.40. Month to Date: .00
Water year season is from October 1st through September.
Chilling Hours November 1st through February 28: Orange Cove, Parlier, Arvin, Shafter, Stratford, Madera two, Lindcove, Porterville, Hours at 45 or below 45.
Sunrise: 5:43 am Sunset: 8:22 pm. Hours of Daylight: 14:36
Yesterday’s Weather:
MAE : Madera 253 : DH1700 / 95 / 56 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 94 / 63 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 95 / 61 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 95 / 58 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 92 / 68 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 92 / 60 / 0.00 /
ATEC1 : Avenal 787 : DH1659 / 91 / 62 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 93 / 59 / 0.00 /
TFTC1 : Taft 759 : DH1653 / 91 / 69 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 92 / 60 / 0.00 /
Rainfall: Water year Oct 1st through September 30th
Year % Last Y. % Ave. Annual ave.
STOCKTON 0.00 9.22 67 21.78 158 13.76 14.06
MODESTO 0.00 8.17 64 16.93 132 12.83 13.11
MERCED 0.00 7.06 58 16.03 132 12.19 12.50
MADERA 0.00 7.22 62 14.18 121 11.73 12.02
FRESNO 0.00 6.73 60 17.20 152 11.31 11.50
HANFORD 0.00 4.70 48 11.05 112 9.89 10.10
BAKERSFIELD 0.00 3.95 62 7.82 123 6.35 6.47
BISHOP 0.00 1.49 32 9.16 195 4.69 5.18
SALINAS 0.00 7.15 57 16.45 130 12.63 12.83
PASO ROBLES 0.00 9.62 77 16.14 130 12.45 12.78
SANTA MARIA 0.00 6.01 44 18.44 134 13.76 13.95
Next report: July 1