May 31, 2018
Summary: Temperatures this morning are running anywhere from ten to eighteen degrees cooler than yesterday at this time. A robust on shore flow is currently underway in association with a trough of low pressure currently moving through. Satellite imagery this morning shows coastal fog and low clouds all the way inland to the last range of mountains separating the valley from the coast range. Winds at Pacheco Pass are out of the west at 25, gusting to 35 MPH with similar conditions through Cottonwood Pass.
Temperatures will struggle to reach 80 this afternoon with highs possibly only in the high 70s at many locations. Enjoy this breath of spring while it lasts as this trough will have already moved into the Great Basin by Friday, allowing a relatively strong upper ridge to begin to move in from the west. Temperatures Friday will still be moderate as it will take a day to mix out the marine air then a big jump in temperatures will occur Saturday, peaking on Sunday with hotter locations possibly just clipping the century mark.
This high will also be temporary, as is many times the case in late May and early June. Another weak trough will be approaching the west coast Monday for the beginning of a cooling trend. This trough is quite weak and will have no weather associated with it. However, temperatures should lower to near seasonal averages by the middle of next week.
Medium range models point to just weak high pressure over the region with temperatures near to marginally above average.
Forecast: Other than occasional high clouds today and tonight, it will be mostly clear and much cooler. Mostly clear Friday through Sunday with a rapid warming trend. Mostly clear Sunday night through Thursday with a slow cooling trend.
Short Term:
Madera 77/49/85/55/97 | Reedley 79/50/85/56/98 | Dinuba 78/49/84/55/96 | |
Porterville 80/48/86/56/98 | Lindsay 79/48/86/56/97 | Delano 80/53/86/57/97 | |
Bakersfield 80/55/86/61/96 | Arvin 79/53/84/58/98 | Taft 79/58/84/65/96 | |
Lamont 80/55/84/62/97 | Pixley 80/50/86/57/97 | Tulare 79/49/85/56/95 | |
Woodlake 79/50/86/56/97 | Hanford 79/49/85/56/97 | Orosi 79/49/86/56/97 |
Seven Day Forecast:
Sunday
Mostly clear 64/100 |
Monday
Mostly clear 62/95 |
Tuesday
Mostly clear 58/91 |
Wednesday
Mostly clear 57/90 |
Thursday
Mostly clear 57/88 |
Two Week Outlook: June 6 through June 13: This model shows a trough of low pressure moving into the western states and remaining for a few days. No precipitation would be expected with this pattern, however temperatures would lower to near seasonal values.
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 mainly out of the northwest today at 10 to 15 MPH. there will be local gusts to around 30 MPH below coastal canyons. Winds tonight will decrease to 5 to 15 MPH. winds Friday through Sunday will be generally less than 15 MPH and generally out of the northwest afternoons and evenings.
Rain: Expect dry conditions indefinitely
Afternoon Dew Points Today: Mid to upper 30s. Kern: Mid to upper 30s.
Humidity: Visalia: 20%/80% Bakersfield: 20%/65%
Actual Humidity May 29, 2018: Delano, 87%/31%, Porterville, 75%/19%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 80% tomorrow 100% Bakersfield: Today: 80% Tomorrow: 100%
ET Rates Over the Past Seven Days May 29, 2018: Stratford 1.74, Parlier 1.59, Blackwell 1.96, Lindcove 1.49, Arvin 1.68, Orange Cove 1.70, Porterville 1.60, Delano 1.66, Madera Two 1.66. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 72, Parlier 73, Blackwell 77, Lindcove, 72, Arvin, 78, Orange Cove 67, Porterville 80, Delano 75, Madera Two, NA
Record Temperatures: 109/45. Average Temperatures: 88/57
Cooling Degree Days this Season: 236 +60 Courtesy of the NWS
Average temperatures for May so far, 70.1 +1.7
Precipitation: Seasonal total/average/above or below average:
Since July 1, 2017 Fresno: 6.73 season. or -4.35. Month to Date: .T
Since July 1, 2017, Bakersfield: 3.93, or -2.31. Month to Date: T
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: 5:42 am Sunset: 8:12 pm. Hours of Daylight: 14:28
Yesterday’s Weather:
MAE : Madera 253 : DH1700 / 86 / 63 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 91 / 69 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 92 / 65 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 92 / 61 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 91 / 73 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 91 / 65 / 0.00 /
ATEC1 : Avenal 787 : DH1703 / 88 / 66 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 93 / 65 / 0.00 /
TFTC1 : Taft 759 : DH1659 / 88 / 76 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / M / 60 / 0.00 /
Rainfall: Water year Oct 1st through September 30th
Year % Last Y. % Ave. Annual ave.
STOCKTON 0.00 9.22 67 21.68 159 13.67 14.06
MODESTO 0.00 8.17 64 16.79 132 12.70 13.11
MERCED 0.00 7.06 59 15.79 131 12.05 12.50
MADERA 0.00 7.22 63 14.17 123 11.54 12.02
FRESNO 0.00 6.73 61 17.20 155 11.09 11.50
HANFORD 0.00 4.70 48 11.04 113 9.73 10.10
BAKERSFIELD 0.00 3.95 63 7.81 125 6.27 6.47
BISHOP 0.00 1.49 33 9.16 204 4.49 5.18
SALINAS 0.00 7.15 57 16.36 131 12.53 12.83
PASO ROBLES 0.00 9.62 77 16.14 130 12.43 12.78
SANTA MARIA 0.00 6.01 44 18.44 134 13.72 13.95
Next report: Friday, June 1