June 15, 2021
Central California is caught between a trough of low pressure moving through the Pacific Northwest and building high pressure over the Four Corners region. There is enough modified marine air seeping into the valley to give us one last day of near average temperatures. Winds through Pacheco Pass are currently sustained at 21 MPH. That flow will cease later today as strong upper level high pressure over the desert southwest expands westward over California. The clockwise flow around the high is turning the winds aloft over southern California out of the south. The balloon sounding above San Diego indicated a southerly flow from 5,000 to 30,000 feet. High clouds are embedded within this flow and have made it as far north as San Bernardino and Los Angeles Counties.
Wednesday will see the beginning of a searing heat wave which will last through at least next Monday. Strong upper level high pressure and its sinking air will drive readings to near record territory Friday through Sunday. Models are indicating valley temperatures will range from 107 in the cooler locations to as high as 112 in the hottest regions.
The high will weaken slightly Monday and even more so Tuesday, however it may be Wednesday of next week before readings dip into double digits. Models show a weak low just off the northern California coast by Monday night, possibly forming a cut off low just off shore late Tuesday. Some models show this feature remaining off the central coast for several days.
Forecast: Mostly clear today. Mostly clear and hot Wednesday with occasional high clouds. Mostly clear and extremely hot Thursday through Sunday with occasional high clouds. Mostly clear Monday through Tuesday with a slow cooling trend.
Short Term:
| Madera 93/59/101/64/109 | Reedley 93/59/101/66/108 | Dinuba 92/57/100/64/108 |
| Porterville 94/59/102/68/109 | Lindsay 93/58/101/64/108 | Delano 94/61/102/69/110 |
| Bakersfield 92/71/102/78/109 | Taft 92/72/101/81/108 | Arvin 93/65/101/72/110 |
| Lamont 93/66/101/72/109 | Pixley 94/62/101/66/108 | Tulare 92/58/100/65/108 |
| Woodlake 93/59/101/63/107 | Hanford 93/60/101/67/109 | Orosi 92/58/100/64/107 |
Seven Day Forecast:
| Friday
Mostly clear 70/110 |
Saturday
Mostly clear 72/111 |
Sunday
Mostly clear 70/109 |
Monday
Mostly clear 69/106 |
Tuesday
Mostly clear 62/102 |
Two Week Outlook: June 21 through June 29: this model shows a wide ranging high pressure system over the western US, resulting in above average temperatures and dry conditions.
June: This model is indicating a ridge of upper level high pressure will be more dominant over the Desert Southwest and, to a lesser extent, California, resulting in above average temperatures for the month with the usual dry conditions prevailing.
June, July, August: This model mimics the pattern of recent years, indicating high pressure over the Desert Southwest being the most dominant feature, resulting in above average temperatures. Theoretically, this pattern blocks monsoonal moisture from moving northward. Typically, there’s little to no precipitation anyway, and that will be the case this summer.
Winds Discussion: Winds during the afternoons and evenings will be generally out of the northwest at around 8 to 15 MPH. Winds during the night and morning hours will be generally at or less than 8 MPH with local gusts to 20 MPH afternoons and evenings along with periods of near calm conditions through Friday.
Afternoon Dew Points Today: Mid to upper 40s. Kern: Mid to upper 40s.
Actual Humidity Range Yesterday: Delano, 67%/35% Porterville, 78%/35%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 70%. Bakersfield: Today: 90% Tomorrow: 70%
ET Rates Over the Past Seven Days:. Stratford 2.05, Parlier 1.89, Arvin 1.93, Orange Cove 2.05, Porterville 1.82, Delano 1.80. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 71, Parlier 74, Arvin, 74, Orange Cove 78, Porterville 83, Delano 75.
Record Temperatures: 109/47. Average Temperatures: 91/61
Cooling Degree Days This Season:. 402 +65 Varies widely from location to location. courtesy of the NWS
Average Temperature for this month So Far: 76.4 +2.2 courtesy of the NWS
Precipitation: Seasonal total for Fresno, 6.59 or -4.25 or 61% of average. Month to Date: .00 or -17
Precipitation for Bakersfield, Season, 2.77, +or- -3.53 or 44% of average. Month to date .00 or -.04
Water year season is from October 1st through September 30.
Chilling Hours November 1st through February 28: Orange Cove, , Parlier, , Arvin, , Belridge, , Shafter, , Stratford, , Delano, , Porterville,
Hours at 45 or below 45. Courtesy UC Davis
Sunrise: 5:39 am Sunset: 8:20 Hours of Daylight: 14:40
Yesterday’s Weather
MCE : Merced 153 : DH1700 / 90 / 63 / 0.00 /
MAE : Madera 253 : DH1700 / 91 / 63 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 92 / 66 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 92 / 65 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 93 / 63 / 0.00 /
BFL : Bakersfield Airport 496 : DHM / 90 / 68 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 92 / 64 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 92 / 62 / 0.00 /
TFTC1 : Taft 759 : DH1651 / 90 / 67 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 88 / 59 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 7.88 59 8.35 63 13.33 13.45
MODESTO 0.00 7.12 59 6.94 57 12.15 12.27
MERCED 0.00 7.00 60 0.00 0 11.72 11.80
MADERA 0.00 M M M M 10.71 10.79
FRESNO 0.00 6.59 61 0.00 0 10.84 10.99
HANFORD 0.00 4.29 53 0.00 0 8.06 8.13
BAKERSFIELD 0.00 2.77 44 0.00 0 6.30 6.36
BISHOP 0.00 1.62 37 2.25 51 4.42 4.84
SALINAS 0.00 5.75 46 9.16 73 12.47 12.58
PASO ROBLES 0.00 6.74 56 11.37 95 11.99 12.15
SANTA MARIA 0.00 6.87 52 10.61 80 13.19 13.32
Next update: June 16/am