September 1, 2023
Summary We will start off September significantly cooler as a trough of low pressure digs southward from the Pacific Northwest into northern and central California. Water vapor satellite imagery indicates the leading edge of the trough has reached as far south as Fresno County and will engulf the rest of central California today. Temperatures will generally be 10 degrees cooler today than yesterday and will cool another 6 to 8 degrees or so Saturday and Sunday. Coolest temperatures Sunday may not even reach the 80 degree mark. After a blazing summer this year, we will finally enjoy a touch of fall. Models show the trough morphing into a closed low over northern California and keep it there through Sunday evening. Monday will be a transition day as the low moves into the Great Basin. By Tuesday, a zone of weak high pressure will extend from the waters off the California coast to the central and southern Rockies. Readings will rise to near 90 Tuesday, leveling off into the low to mid 90s Tuesday and Wednesday. The winds aloft will be out of the west for much of next week, maintaining a dry weather regime.
Forecast Mostly clear skies through Tuesday. Mostly clear Tuesday night through Friday.
Temperatures:
| Madera
88/59/84/56/80 |
Reedley
89/60/85/59/81 |
Dinuba
88/59/85/58/81 |
| Porterville
90/61/86/58/80 |
Lindsay
90/59/86/56/82 |
Delano
89/62/85/60/80 |
| Bakersfield
90/65/89/62/82 |
Taft
88/64/85/63/80 |
Arvin
91/64/86/62/81 |
| Lamont
90/64/87/61/81 |
Pixley
89/61/86/59/81 |
Tulare
88/60/86/57/80 |
| Woodlake
88/58/86/57/81 |
Hanford
89/62/86/59/81 |
Orosi
88/59/86/57/81 |
Seven Day Forecast
| Monday
Mostly clear 55/85 |
Tuesday
Mostly clear 58/91 |
Wednesday
Mostly clear 60/93 |
Thursday
Mostly clear 61/94 |
Friday
Mostly clear 63/95 |
Two Week Outlook: September 7 through September 13: This model indicates high pressure will be parked over the desert southwest with a weak trough of low pressure along the Pacific coast. This configuration will result in near average temperatures for the valley with dry conditions continuing.
August: This model indicates temperatures over the next 30 days will be near to slightly above seasonal averages. Dry weather will continue, although we will have to keep a watchful eye to the south for possible tropical activity.
August, September, October: This model shows above average temperatures for much of the west, particularly the Desert Southwest. It also points to below average precipitation over the Desert Southwest, possibly meaning a less active monsoon season. The chance of precipitation for central California appears to be near average.
Wind Discussion: Winds this morning will be generally light and variable then will be out of the west to northwest this afternoon at 10 to 20 with stronger gusts. Winds tonight through Sunday will be mainly out of the northwest at 8 to 15 mph with local gusts to 20 mph, mainly in the afternoons. Winds Monday will be generally variable to around 12 mph.
Rain Discussion: Expect dry conditions.
Mid afternoon dew points: Low to mid 50s. Kern: Low to mid 50s.
ET for the past seven days: Stratford, 1.78, Parlier, 1.65, Arvin 1.84, Delano 1.65.
Soil temperatures: Stratford 76, Parlier 78, Arvin 81, Delano 79 *=data missing.
Average Temperatures: 95/63 Record Temperatures: 107/51
Cooling Degree Days This Season. 1994 +193 Varies widely from location to location. courtesy of the NWS
Precipitation: Seasonal total for Fresno 18.02, Monthly .00
Precipitation for Bakersfield: Season: 11.34, Monthly: .00
Average Temperature this Month 82.0 +2.1 taken at NWS Hanford.
Water year season is from October 1st through September 30.
Chilling Hours November 1st through February 28: Parlier 1306, Arvin 1115, Belridge 1204, Shafter 1230, Stratford 1277, Delano 1273, Porterville 1245 courtesy UC Davis
Sunrise 6:31, Sunset, 7:26. hours of daylight, 12:57
NA=Not available
Yesterday’s Weather: H
MCE : Merced 153 : DH1700 / 98 / 60 / 0.00 /
MAE : Madera 253 : DH1700 / 101 / 61 / 0.00 /
FAT : Fresno Airport 333 : DH1700 / 100 / 70 / 0.00 /
HJO : Hanford Airport 242 : DH1700 / 101 / 62 / 0.00 /
NLC : Lemoore Naval AS 234 : DH1700 / 103 / 61 / 0.00 /
BFL : Bakersfield Airport 496 : DH1700 / 102 / 72 / 0.00 /
VIS : Visalia Airport 292 : DH1700 / 99 / 64 / 0.00 /
PTV : Porterville Airport 442 : DH1700 / 100 / 65 / 0.00 /
LOSC1 : Los Banos 120 : DH1600 / 90 / 62 / 0.00 /
Rainfall stats: seas % L.Y % ave. s.a.
STOCKTON 0.00 23.21 174 9.81 73 13.37 13.45
MODESTO 0.00 20.17 165 9.00 74 12.21 12.27
MERCED 0.00 20.93 178 7.44 63 11.75 11.80
MADERA 0.00 11.67 108 2.21 21 10.76 10.79
FRESNO 0.00 18.02 165 6.34 58 10.94 10.99
HANFORD 0.00 15.06 186 6.36 79 8.09 8.13
BAKERSFIELD 0.00 11.34 180 5.41 86 6.31 6.36
BISHOP 0.00 16.60 351 5.64 119 4.73 4.84
DEATH VALLEY NP 0.00 3.47 174 1.89 95 2.00 2.20
SALINAS 0.00 13.95 111 7.31 58 12.53 12.58
PASO ROBLES 0.00 20.89 173 8.70 72 12.09 12.15
SANTA MARIA 0.00 24.05 182 7.79 59 13.25 13.32
Next report: September 2
At John Hibler Weather Forecasting, it is our goal to provide the most accurate forecasts available. Weather forecasting, unlike any other business, invites errors. Weather, by nature, is chaotic. It is our goal to be as accurate as humanly possible.