textproduct: San Joaquin Valley
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
1. Areas of Dense Fog returning to the San Joaquin Valley this morning with increasing chances later this week.
2. Temperatures will increase over the next few days with dry conditions into next week.
DISCUSSION
Latest satellite imagery shows the cold front has passed with much of the clouds being gone except for a few near the mountains along with the wind speeds have decreased back to diurnal winds and dewpoints near freezing. While we have mostly clear skies, the cooling tonight will make it hard for fog to form due to the low dewpoints as latest models have a 10 to 20 percent chance of visibilities dipping below a mile.
Temperatures will begin to slowly rise through the weekend as the latest ensembles are in agreement that the ridge off the California coast slides in and will strengthen over the next few days. However, the positioning of the ridge will be over land which reduces significantly the likelihood of dry polar wind advecting into our area. Because of this, there is high confidence that any stratus that forms will dissipate by the late afternoon. The latest CPC outlooks have strong signals for above average temperatures and below average precipitation through the middle of January.
AVIATION
VFR conditions will prevail for the San Joaquin Valley through the daylight hours, then may become MVFR around 12Z Friday, with a 10-20% chance for IFR to LIFR conditions from 12Z through 18Z Friday. Mountain obscuring clouds are expected to linger around Kern County through the overnight hours. VFR conditions will prevail for the next 24 hours for the Mojave Desert.
AIR QUALITY ISSUES
ISSUED: 01/08/2026 14:15 EXPIRES: 01/09/2026 23:59
On Friday January 9 2026, Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno and Kern Counties. Burning Discouraged in Kings, Madera, Merced, and Tulare Counties, and Kern (Greater Frazier Park Area) and Sequoia National Park and Forest.
CERTAINTY
The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is medium.
Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.html for additional information and/or to provide feedback.
HNX WATCHES/WARNINGS/ADVISORIES
None.
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