May 12, 2021
Strong upper level high pressure is centered just off the California coast this morning. surface pressure remains essentially flat with both San Francisco and Las Vegas reporting identical altimeter readings of 29.94. Midsummer conditions will prevail through Thursday as the hottest locations on the valley floor will be nudging the century mark. Typically during the month of May, these temperature spikes don’t last very long with the latest cooling trend already being seen on the horizon.
A low will drop southward from the Pacific Northwest Friday night and Saturday. most models show it landing southward, forming a closed low over central California Saturday night and Sunday. This system may have enough moisture and convection to develop scattered showers and isolated thunderstorms over the Sierra Nevada. The combination of cooler air aloft and a surge of marine air inland will lower temperatures a good 10 to 15 degrees over the weekend along with increased wind conditions.
The low will move into southern Nevada by Monday. Next week will be considerably cooler than this week, especially after next Wednesday. a fairly strong trough of low pressure is projected to move into the western US. Some models show showers over northern California and the Sierra Nevada about the 21st. models also show this trough remaining in place through next weekend with below average temperatures prevailing.
Forecast: Clear skies through Friday night. mostly clear to occasionally partly cloudy Saturday through Sunday night. Mostly clear Monday through Tuesday night. partly cloudy Wednesday.
Short Term:
| Madera 98/56/98/57/94 | Reedley 98/55/98/56/95 | Dinuba 97/54/97/54/94 |
| Porterville 98/55/98/56/95 | Lindsay 97/54/98/54/94 | Delano 99/58/98/57/95 |
| Bakersfield 99/67/98/67/96 | Taft 97/70/96/68/94 | Arvin 99/62/98/62/95 |
| Lamont 99/61/98/62/96 | Pixley 98/58/98/56/95 | Tulare 97/54/97/54/94 |
| Woodlake 97/54/98/55/94 | Hanford 99/56/98/56/95 | Orosi 96/54/96/55/93 |
Seven Day Forecast:
| Saturday
Partly cloudy 52/85 |
Sunday
Partly cloudy 50/86 |
Monday
Mostly clear 52/90 |
Tuesday
Mostly clear 51/88 |
Wednesday
Partly cloudy 52/84 |
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 through Friday will be mainly out of the northwest afternoons and evenings at around 8 to 15 MPH. during the night and morning hours, winds will be light and variable with periods of near calm conditions. Winds Friday night and Saturday will be out of the west to northwest at 10 to 20 MPH at times. Gusts to near 30 MPH will be possible along the west side, especially near the base of the Coast Range.
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 / 94 / 53 / 0.00 /
MAE : Madera 253 : DH1700 / 94 / 54 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 93 / 73 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 94 / 55 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 95 / 52 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 94 / 65 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 94 / 56 / 0.00 /
ATEC1 : Avenal 787 : DHM / M / M / M /
PTV : Porterville Airport 442 : DH1700 / 94 / 57 / 0.00 /
TFTC1 : Taft 759 : DH1645 / 92 / 68 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 93 / 59 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 7.88 59 7.99 60 13.38 13.45
MODESTO 0.00 7.12 58 6.86 56 12.35 12.27
MERCED 0.00 7.00 62 0.00 0 11.33 11.80
MADERA 0.00 M M M M 10.31 10.79
FRESNO 0.00 6.59 63 0.00 0 10.43 10.99
HANFORD 0.00 4.29 55 0.00 0 7.79 8.13
BAKERSFIELD 0.00 2.77 45 0.00 0 6.13 6.36
BISHOP 0.00 1.62 39 2.25 54 4.20 4.84
SALINAS 0.00 5.74 47 9.00 74 12.20 12.58
PASO ROBLES T 6.74 57 11.34 96 11.79 12.15
SANTA MARIA 0.00 6.86 53 10.39 80 12.96 13.32
Next report: May 13/AM