Rosamond, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

525
FXUS66 KHNX 042249 AAA
AFDHNX

Area Forecast Discussion
National Weather Service Hanford CA
248 PM PST Thu Dec 4 2025

.UPDATE...Updated air quality issues.

&&

.KEY MESSAGES...

1. Fog and low clouds will continue each night and morning
across the San Joaquin Valley for the remainder of this week.
Dense fog will also develop at times in the lower Sierra
foothills, coastal ranges, and the Grapevine.

2. A gradual warming trend will occur in the mountains and
desert until next week, as the high pressure pattern continues
over the region.

&&

.DISCUSSION...
The stratus deck persists over the Central Valley, although
latest satellite imagery shows at least partial clearing towards
the southern San Joaquin valley, such as in Kern County.
Visibility has been 2 miles or better throughout the Central
Valley with ceilings near 1,000 feet this morning. However,
reports of dense fog and reduced visibilities have been received
for locations within the cloud deck, including Interstate 5
through the Grapevine and Pacheco Pass. Webcams in the lower
Sierra Nevada foothills also show dense fog. Any locations where
clouds are clearing will likely become foggy by later tonight;
latest high resolution ensemble guidance shows a 60-70 percent
chance of visibility less than one quarter of a mile over the
San Joaquin Valley.

This pattern will continue for the next several days with
a gradual rise in daytime high temperatures in the mountains
and desert, or a rise to at least a few degrees above average
by the weekend. Additional warming will continue into next week
with highs rising to the lower 70`s at the warmest locations in
the desert. Some rise in temperatures is shown for the San
Joaquin Valley next week, but it will depend on the presence of
fog and stratus.

The Climate Prediction Center continues to show high
probabilities (80-90%) of above average temperatures and a
50-60 percent chance of continued below average precipitation
for the next 6-10 days. The 8-14 day outlook shows up to a 40
percent probability of below average precipitation and lower
chances (60% to around 70%) for above average temperatures.

&&


.AVIATION...
MVFR visibility and ceilings will persist across the San Joaquin
Valley through this afternoon. VFR conditions are expected
elsewhere. A 30-50 percent chance of VLIFR conditions due to fog
returns after 09Z Friday; otherwise expect IFR conditions at
the TAF sites. Between 12Z and 18Z Friday...a 60-70 percent
chance of VLIFR visibility and ceilings will exist across the
San Joaquin Valley.

&&

.AIR QUALITY ISSUES...
On Friday December 5 2025, Fireplace/Wood Stove Burning Status is:
No Burning Unless Registered in Fresno, Kern, Madera and Merced
Counties. Burning Discouraged in Kings 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 medium.
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 11 AM PST this morning for CAZ335.
&&

$$

BSO

weather.gov/hanford