Monte Rio, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

861
FXUS66 KMTR 090810
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
110 AM PDT Mon Jun 9 2025

...New SYNOPSIS, SHORT TERM, LONG TERM...

.SYNOPSIS...
Issued at 110 AM PDT Mon Jun 9 2025

Remarkably stable weather pattern this week with temperatures
generally near the seasonal average, marine layer clouds each night
and morning, and breezy onshore winds each afternoon and evening.

&&

.SHORT TERM...
(Today and tonight)
Issued at 110 AM PDT Mon Jun 9 2025

Upper level ridging across the Pacific Northwest is just beginning
to erode, with a cutoff low that had been meandering off California
now basically absorbed into the synoptic-scale flow across the
western United States. The Bodega Bay and Point Sur profilers have
not shown much change in the marine layer depth from yesterday,
leading to high confidence that stratus will expand quite far inland
this morning, as it has for the last couple of days, with patchy fog
and drizzle possible in coastal and favored upslope areas. High
temperatures remain in the upper 70s to middle 80s inland, with the
warmest spots reaching temperatures near 100, while the coastal
regions continue to be cool with highs in the upper 50s to middle
60s, barring warmer spots near Santa Cruz and the Big Sur coast
where temperatures reach the middle 70s. Finally, breezy and gusty
onshore winds will develop during the afternoon and evening, with
the strongest gusts of 20 to 30 mph through the gaps and passes,
along the coastal jets, and within the Salinas Valley.

&&

.LONG TERM...
(Tuesday through Sunday)
Issued at 110 AM PDT Mon Jun 9 2025

The upper level ridge continues to erode through the next couple
days, with a trough coming into the region later this week.
Temperatures through the week remain remarkably stable. Perhaps
Friday and Saturday will see temperatures a few degrees cooler than
those from earlier in the week, as the trough reinforces the onshore
flow and deepens the marine layer, but temperatures will generally
remain near or slightly below seasonal averages. Speaking of the
marine layer, the marine layer stratus should build inland each
night and morning before dissipating through the afternoon, while
winds will remain breezy and gusty each afternoon and evening.

&&

.AVIATION...
(06Z TAFS)
Issued at 948 PM PDT Sun Jun 8 2025

Coastal stratus /MVFR-IFR/ will move inland tonight and Monday
morning on onshore winds. The SFO-SAC pressure gradient is 3.9
mb and the marine layer depth is 1100 feet per Sunday afternoon
Oakland upper air sounding. A few patches of coastal drizzle are
likely tonight and Monday morning. Stratus lifting to MVFR-VFR
while it`ll be VFR inland Monday. HREF output shows stratus
returning Monday night and Tuesday morning.

Vicinity of SFO...Stratus has reached SFO. Both HREF and RAP
(pessimistic, going IFR-LIFR ceiling) output shows increasing
stratus /IFR/ tonight and Monday morning. BKN ceiling lowering to
IFR tonight prevailing to 18z Monday. Stratus /IFR/ returns Monday
evening and night. West northwest wind near 10 knots tonight and
Monday morning. West to northwest wind increasing to 20 to 28
knots Monday afternoon and early evening.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...Stratus /MVFR-IFR/ and a few patches of
light drizzle are possible tonight and Monday morning. Stratus
lifting to MVFR-VFR by late Monday morning and early afternoon.
Onshore winds 5 to 15 knots tonight and Monday. Stratus /IFR/
returns Monday evening.

&&

.MARINE...
(Tonight through next Saturday)
Issued at 942 PM PDT Sun Jun 8 2025

Westerly breezes will continue across the bays this evening. A
more widespread fresh NW breeze will arrive Monday afternoon
across the coastal waters. A low amplitude, long period
southwesterly swell arrives Monday, bringing enhanced currents and
causing waves to  break in deeper water. Strong NW winds and rough
seas are expected to arrive by mid-week.

&&

.BEACHES...
Issued at 117 PM PDT Sun Jun 8 2025

A long period southerly swell will enter the waters Monday into
Tuesday bringing a higher risk for rip current along beaches.
Breaking waves about 5 to 7 feet, but strong currents and sneaker
waves will be the bigger hazard. Use caution near the water and
never turn your back on the ocean.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this
     evening for Pigeon Pt to Pt Pinos 0-10 nm-Pt Arena to Pt
     Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm-SF Bay
     N of Bay Bridge.

     Small Craft Advisory until 3 AM PDT early this morning for Pt
     Pinos to Pt Piedras Blancas 0-10 nm.

     Small Craft Advisory until 9 PM PDT this evening for Pt Arena to
     Pt Reyes 10-60 NM.

&&

$$

SHORT TERM...DialH
LONG TERM....DialH
AVIATION...Canepa
MARINE...Canepa

Visit us at www.weather.gov/sanfrancisco

Follow us on Facebook, X, and YouTube at:
www.facebook.com/nwsbayarea
x.com/nwsbayarea
www.youtube.com/nwsbayarea