July 15, 2020
Summary: A weak upper low off the southern California coast is maintaining a deep marine layer. The latest sounding at Monterey indicates the marine layer’s depth is 2,700 feet. Winds at the Delta have gusted as high as 37 MPH during the early morning hours. The high temperature at Los Banos yesterday was only 87 degrees, due to modified marine air pouring through Pacheco Pass. This same low may add enough lift to the atmosphere to trigger isolated thunderstorms over the Sierra Nevada this afternoon and again Thursday afternoon. Triple digits will again be a way of life beginning Thursday as the pool of marine air mixes out and upper level high pressure currently over Texas begins to shift westward again over the Desert Southwest and eventually California. One element of the weather I keep a close eye on this time of year is the monsoon. Some models point to a southerly flow developing this weekend, possibly moving enough moisture into central California for a chance of thunderstorms over the Sierra Nevada during the afternoons and evenings and periods of mid and high level clouds over the valley floor. This is not a complete given yet, but it is that time of year. Expect hot weather to last through at least the middle of next week as persistent upper level high pressure covers the Desert Southwest and California, clamping down on the marine layer.
Forecast: clear skies through Saturday. Mostly clear to occasionally partly cloudy Saturday night through Wednesday and hot.
Short Term:
| Madera 96/60/100/63/101 | Reedley 97/61/100/63/100 | Dinuba 96/59/99/62/100 |
| Porterville 98/61/101/63/101 | Lindsay 97/59/100/62/101 | Delano 98/66/100/67/101 |
| Bakersfield 98/71/101/72/102 | Taft 97/70/101/73/101 | Arvin 99/66/101/68/102 |
| Lamont 99/68/101/70/101 | Pixley 98/61/100/64/101 | Tulare 97/61/100/63/100 |
| Woodlake 96/60/100/64/101 | Hanford 97/65/101/66/101 | Orosi 96/59/99/63/100 |
Seven Day Forecast:
| Saturday
Mostly clear 65/102 |
Sunday
Partly cloudy 67/103 |
Monday
Partly cloudy 67/102 |
Tuesday
Partly cloudy 65/102 |
Wednesday
Partly cloudy 68/103 |
Two Week Outlook: July 21 through July 27: This model shows a trough of low pressure over the Pacific Northwest while upper level high pressure remains over the Desert Southwest. This pattern allows marginally above average temperatures for mid July with typical dry conditions continuing.
July: This model indicates warmer than average temperatures over the next four weeks. The usual dry pattern will prevail in the San Joaquin Valley with the chance of precipitation on any given day being almost nil. Average precipitation for the month is .01.
July, August, September: This time of year, the 90 day out look is no secret. July and August will be hot and dry while September has a minor risk of precipitation, mainly from the tropics. This out look appears fairly typical. Marginally above average temperatures are expected with near average precipitation, which is a meaningless projection.
Winds Discussion: Winds during the afternoon and evening will be mainly out of the northwest at 5 to 12 MPH with locally stronger gusts through Saturday. winds during the night and morning hours will be variable to 7 MPH 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: Low to mid 50s. Humidity values ranging from 25%/75% at Visalia. Bakersfield 20%/50%
Actual Humidity range July 14, 2020: Delano, 89%/11%, Porterville, 55%/18%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 100%. Bakersfield: Today: 100% Tomorrow: 100%
ET Rates Over the Past Seven Days: Stratford 2.18, Parlier 2.01, Blackwell Corner 2.40, Arvin 2.33, Orange Cove 2.20, Porterville 2.11, Delano 2.01. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 76, Parlier 81, Blackwell NA, Arvin, 80, Orange Cove 84, Porterville 83, Delano 77
Record Temperatures: 111/54. Average Temperatures: 99/65
Cooling Degree Days this Season: 863 +193
Courtesy of the NWS
Average temperature for July so far: 80.1 +1.5
Precipitation: Seasonal total for Fresno/average + or 7.63 or -3.69. Month to Date: .00 -.01
Since Oct 1, 2019, Bakersfield: 7.20, or +.85. Month to Date: .00 -.00
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: 5:52, Sunset: 8:17 pm. Hours of Daylight: 14:26
Yesterday’s Weather:
MCE : Merced 153 : DH1700 / 94 / 61 / 0.00 /
MAE : Madera 253 : DH1700 / 95 / 60 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 98 / 68 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 98 / 60 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 98 / 59 / 0.00 /
BFL : Bakersfield Airport 496 : DHM / 99 / 69 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 95 / 65 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 99 / 63 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 87 / 58 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 8.35 61 18.37 134 13.76 14.06
MODESTO 0.00 6.94 54 13.35 104 12.83 13.11
MERCED 0.00 9.54 78 13.27 109 12.19 12.50
MADERA 0.00 6.02 51 11.42 97 11.74 12.02
FRESNO 0.00 7.63 67 11.85 105 11.32 11.50
HANFORD 0.00 6.62 67 9.50 96 9.90 10.10
BAKERSFIELD 0.00 7.20 113 7.80 123 6.35 6.47
BISHOP 0.00 2.25 47 8.47 178 4.75 5.18
SALINAS 0.00 9.16 73 13.80 109 12.63 12.83
PASO ROBLES 0.00 11.37 91 14.88 120 12.45 12.78
SANTA MARIA 0.00 10.61 77 15.68 114 13.77 13.95
Next report: July 16/morning