textproduct: San Joaquin Valley

KEY MESSAGES

1. Warming trend into weekend before cooling early next week.

2. Dry conditions will continue to prevail into early next week. Next best chance of rain is late next week.

3. Dense Fog Advisory in effect from midnight until 10 AM PT Thursday, November 5.

DISCUSSION

Visibilities have begun to lower this evening across portions of the San Joaquin Valley. This in combination with a 30 to 50 percent chance of 1/4 mile or less in visibility for most of the Valley has led us to issue another Dense Fog Advisory from midnight until 10 AM Thursday. Winds will be much lower tonight as compared to Tuesday night into Wednesday morning which lifted the fog to be stratus.

Temperatures continue to climb Thursday into this weekend as the ridge of high pressure moves onshore but strengthens a bit. There is a 50 to 85 percent probability of high temperatures of at least 75 degrees this weekend. The stability from the ridge will keep things stable overnight for fog to form again overnight into the weekend.

However, the temperatures start to take a tumble Monday into Tuesday as a shortwave trough moves through the area. No precipitation is expected with this trough. Before we can settle and think things will be completely dry and bad, latest ensembles favor a stronger trough sliding in late next week which is expected to bring in more rain and snow.

AVIATION

MVFR conditions have begun to pop up with IFR visibilities already at KVIS. There is a 40 to 60 percent chance of IFR visibilities for most of the Valley until 18Z with lower probabilities around KFAT, KBFL, and KMCE. Conditions are expected to improve to MVFR beginning around 15Z through 18Z. After 18Z, most of the Valley will see MVFR to VFR conditions. VFR conditions are expected for the next 24 hours for the Sierra Nevada and Mojave Desert.

AIR QUALITY ISSUES

ISSUED: 11/04/2026 14:48 EXPIRES: 11/05/2026 23:59

On Thursday November 5 2026, Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno, Kern, Kings, Madera, Merced, and Tulare Counties. Burning Discouraged in 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

Dense Fog Advisory until 8 AM PST Thursday for CAZ301>307- 309>312-314>316.