July 6, 2021
The center of upper level high pressure this morning remains over the Four Corners region with California flanked along the western rim of the high. The main heat belt is still over southern California and the Desert Southwest. There is a 4.6 millibar difference in pressure between Salinas and Fresno. The marine layer is 2,500 thick and is moving through the Delta and Pacheco Pass. Winds are sustained out of the southwest at 20 MPH and out of the west at 13 through Pacheco Pass. These winds will increase later today when the daytime heating effect begins. This should be enough to keep temperatures in the mid to upper 90s from Madera County north and near the century mark elsewhere.
The fourth major heatwave of the summer will begin Thursday as the Four Corners high shifts slowly to the west. By Friday afternoon, the high will be centered over Nevada and will remain there through Monday. This high will be unusually strong with temperatures eclipsing the 110 degree mark Saturday through Tuesday. There is the possibility of in and out cloud cover from the monsoon. Temperatures may remain in the low to mid 80s for overnight lows in Fresno and Bakersfield and locally elsewhere. For now, we’ll keep thunderstorms out of the forecast over the Sierra Nevada due to the strong downward motion of the atmosphere.
The next hope of a cooling trend will begin around Wednesday or Thursday of next week when most models show the high moving a bit towards the southeast, allowing the very weak trough of low pressure to move into the Pacific Northwest and northern California. This will push modified marine air into the valley.
Forecast: Mostly clear and hot through Thursday. Mostly clear and extremely hot Friday through Tuesday with occasional high clouds.
Short Term:
| Madera 97;63/99/68/106 | Reedley 100/63/101/68/106 | Dinuba 99/62/100/67/105 |
| Porterville 100/64/101/69/107 | Lindsay 100.63/101/67/105 | Delano 100/65/101/69/106 |
| Bakersfield 99/74/100/77/104 | Taft 100/74/101/79/105 | Arvin 101/68/101/70/107 |
| Lamont 100/68/101/72/107 | Pixley 100/65/101/68/106 | Tulare 99/63/100/67/105 |
| Woodlake 99/63/100/67/105 | Hanford 100/65/101/68/107 | Orosi 99/62/100/67/105 |
Seven Day Forecast:
| Friday
Mostly clear 75/107 |
Saturday
Mostly clear 75/110 |
Sunday
Mostly clear 77/111
|
Monday
Mostly clear 76/111 |
Tuesday
Mostly clear 73/109 |
Two Week Outlook: July 12 through July 18: This model shows an active monsoon into the Desert Southwest and, to a lesser extent, southern California and the Sierra Nevada. This pattern always offers a small chance of some rain with above average temperatures continuing.
July: The 30 day outlook for July follows the trend set in June with above average temperatures and upper level high pressure that’s stronger than usual. The typical dry conditions will continue.
July, August, September: Above average temperatures can be expected for the next three months. This model is given equal chance of rain for not only California but also the parched desert southwest.
Winds Discussion: During the afternoon and evening, winds will be mainly out of the northwest at 5 to 12 MPH. During the night and morning hours, winds will be generally at or less than 10 MPH with periods of near calm conditions.
Rain: dry weather will continue for at least the next 7 to 10 days.
Afternoon Dew Points Today: Low to mid 50s. Kern: Upper 40s to the lower 50s.
Actual Humidity Range Yesterday: Delano, 98%/21% Porterville, 53%/17%
Percentage of Sunshine Today/Tomorrow: Visalia: Today: 90%, tomorrow 90%. Bakersfield: Today: 90% Tomorrow: 90%
ET Rates Over the Past Seven Days:. Stratford 2.29, Parlier 2.00, Arvin 2.13, Orange Cove 2.14, Porterville 2.03 , Delano 2.01. Courtesy University of California *=estimate, NA=not available.
Seven Day Soil Temperatures: Stratford 74, Parlier 83, Arvin, 79, Orange Cove NA, Porterville NA, Delano 83.
Record Temperatures: 111/50. Average Temperatures: 97/66
Cooling Degree Days This Season:. 811 +197 Varies widely from location to location. courtesy of the NWS
Average Temperature for this month So Far: 84.5 +4.5 courtesy of the NWS
Precipitation: Seasonal total for Fresno, 6.59 or -4.33 or 60% of average. Month to Date: .00 or -01
Precipitation for Bakersfield, Season, 2.77, +or- -3.54 or 44% of average. Month to date .00 or -.-00
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: 5:47 am Sunset: 8:21 Hours of Daylight: 14:34
Yesterday’s Weather
CEE : Merced 153 : DH1700 / 97 / 63 / 0.00 /
MAE : Madera 253 : DH1700 / 98 / 60 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 100 / 68 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 99 / 65 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 100 / 61 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 100 / 73 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 98 / 65 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 100 / 63 / 0.00 /
TFTC1 : Taft 759 : DH1652 / 100 / 74 / 0.00 /
Rainfall: 24hr W.Y. % Last Y. % Ave. Year ave.
STOCKTON 0.00 7.88 59 8.35 63 13.36 13.45
MODESTO 0.00 7.12 58 6.94 57 12.20 12.27
MERCED 0.00 7.00 60 0.00 0 11.75 11.80
MADERA 0.00 M M 0.00 0 10.75 10.79
FRESNO 0.00 6.59 60 0.00 0 10.91 10.99
HANFORD 0.00 4.29 53 0.00 0 8.07 8.13
BAKERSFIELD 0.00 2.77 44 0.00 0 6.31 6.36
BISHOP 0.00 1.62 36 2.25 50 4.50 4.84
SALINAS T 5.77 46 9.16 73 12.49 12.58
PASO ROBLES 0.00 6.74 56 11.37 95 12.00 12.15
SANTA MARIA 0.00 6.87 52 10.61 80 13.21 13.32
Next report: July 7/am