May 11, 2021
At the upper levels of the atmosphere, high pressure continues to build in from the west. At the surface, pressures are virtually flat. At last report, San Francisco and Las Vegas were reporting an altimeter reading of 29.88. the marine layer is also fairly stable with a depth of about 1,200 feet at Monterey.
As the high continues to build, temperatures will rise to early summer type values with widespread mid to upper 90s through Friday. It’s possible isolated locations could push the century mark Wednesday and Thursday.
On Saturday, a weak trough of low pressure will drop southward from the Pacific Northwest then into northern California. This feature may form almost a closed low circulation as it moves southeastward into southern California Sunday and into western Arizona Monday. This will trigger a deepening marine layer over the weekend. That, coupled with cooler air aloft, will lower temperatures to more seasonal levels into early next week. This system may have enough lift for scattered showers and isolated thunderstorms Saturday and Sunday afternoons over the high Sierra.
A new ridge of high pressure will build in from the west by late Monday. However, models continue to indicate a stronger trough will move into the western US from the 19th through the 22nd for a more substantial cooling trend.
Forecast: Mostly clear skies through Friday. Mostly clear Friday night through Tuesday with the possibility of partly cloudy skies Sunday.
Short Term:
| Madera 95/54/98/55/97 | Reedley 95/53/98/55/97 | Dinuba 94/53/97/55/97 |
| Porterville 95/53/98/56/98 | Lindsay 95/52/98/55/97 | Delano 96/57/99/57/98 |
| Bakersfield 95/65/98/67/97 | Taft 94/69/96/70/95 | Arvin 95/59/99/60/97 |
| Lamont 96/59/99/61/98 | Pixley 94/52/98/55/97 | Tulare 94/52/97/56/97 |
| Woodlake 94/52/97/55/97 | Hanford 95/55/98/56/98 | Orosi 93/52/97/55/96 |
Seven Day Forecast:
| Friday
Mostly clear 56/97 |
Saturday
Mostly clear 54/93 |
Sunday
Partly cloudy 51/86 |
Monday
Partly cloudy 51/85 |
Tuesday
Mostly clear 52/90 |
Two Week Outlook: May 18 through May 24: This model shows a trough of low pressure covering much of the western US with temperatures near to marginally below average. The chance of measurable rain will remain very low.
May: The old familiar 30 day outlook indicates above average temperatures for the western US including California. Since we’re now entering the dry season, expect precipitation to be almost nonexistent.
May, June, July: If you go by the guidance of this model, temperatures as we move into the summer months will be hotter than average. Expect typically dry weather.
Winds Discussion: Winds during the afternoons and evenings through Friday will be mainly out of the northwest at around 5 to 12 MPH. Winds during the night and morning hours will be generally at or less than 6 MPH with periods of near calm conditions.
Rain Discussion: Expect dry conditions for the next seven to ten days, at least.
Frost Discussion: All locations will be above 32 degrees for at least the next seven to ten days.
Afternoon Dew Points Today: Mid to upper 30s. Mid to upper 30s.
Actual Humidity Range Yesterday: Delano, 66%/22% Porterville, 71%/19%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 100%, tomorrow 100%. Bakersfield: Today: 100% Tomorrow: 100%
ET Rates Over the Past Seven Days:. Stratford 2.13, Parlier 1.81, Arvin 1.92, Orange Cove 1.94, Porterville 1.81, Delano 1.79. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 67, Parlier 74, Arvin, 71, Orange Cove 74, Porterville 79, Delano 71.
Record Temperatures: 100/40. Average Temperatures: 81/57
Cooling Degree Days This Season:. 89 +10 Varies widely from location to location. courtesy of the NWS
Average Temperature for this month So Far: 71.3 +4.4 courtesy of the NWS
Precipitation: Seasonal total for Fresno, 6.59 or -3.82 or 63% of average. Month to Date: .00 or -16
Precipitation for Bakersfield, Season, 2.77, +or- -3.35 or 45% of average. Month to date .00 or -.11
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: 5:54 am Sunset: 7:57 Hours of Daylight: 14:02
Yesterday’s Weather
MCE : Merced 153 : DH1700 / 92 / 56 / 0.00 /
MAE : Madera 253 : DH1700 / 91 / 51 / 0.00 /
FAT : Fresno Airport 333 : DH1600 / 90 / 60 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 91 / 53 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 92 / 48 / 0.00 /
BFL : Bakersfield Airport 496 : DH1600 / 88 / 63 / 0.00 /
VIS : Visalia Airport 292 : DH1600 / na / 52 / 0.00 /
ATEC1 : Avenal 787 : DHM / M / M / M /
PTV : Porterville Airport 442 : DH1600 / na / 53 / 0.00 /
TFTC1 : Taft 759 : DH1650 / 87 / 64 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 89 / 68 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 7.88 59 7.99 60 13.36 13.45
MODESTO 0.00 7.12 58 6.86 56 12.33 12.27
MERCED 0.00 7.00 62 0.00 0 11.31 11.80
MADERA 0.00 M M 0.00 0 10.30 10.79
FRESNO 0.00 6.59 63 0.00 0 10.41 10.99
HANFORD 0.00 4.29 55 0.00 0 7.78 8.13
BAKERSFIELD 0.00 2.77 45 0.00 0 6.12 6.36
BISHOP 0.00 1.62 39 2.25 54 4.19 4.84
SALINAS 0.00 5.74 47 9.00 74 12.19 12.58
PASO ROBLES 0.00 6.74 57 11.34 96 11.78 12.15
SANTA MARIA 0.00 6.86 53 10.39 80 12.95 13.32
Next report: May 12/AM