Alamo, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

189
FXUS66 KMTR 072014
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
114 PM PDT Sun Jun 7 2026

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

.KEY MESSAGES...
Updated at 113 PM PDT Sun Jun 7 2026

 - Cooler temperatures persist through Tuesday

 - Warmer and drier conditions return mid to late week

 - Elevated fire weather concerns for the North Bay Interior
   Mountains Wednesday evening into Thursday

&&

.SHORT TERM...
Issued at 113 PM PDT Sun Jun 7 2026
(This evening through Monday)

Upper level troughing continues across the region, bringing below
normal temperatures to the region. High temperatures today will be
in the mid 70s to low 80s across the interior and in the 50s to low
60s along the coast. Temperatures trend slightly cooler tomorrow
with highs in the 70s across the interior and 50s to low 60s along
the coast. Gusty onshore winds are expected along the coastline and
across the higher elevations this afternoon and evening. Gusts are
expected to peak between 25 to 35 mph with locally stronger gusts
possible across the higher terrain. Not anticipating winds to be as
strong as they were yesterday given the weaker SFO-WMC and WFO-ACV
gradients. For context, the SFO-WMC gradient peaked around +10mb
yesterday afternoon while it is forecast to peak around +3 to +5mb
today. Winds are expected to pick up again on Monday ahead of a weak
cold front arriving Monday night into Tuesday morning with the SFO-
WMC gradient strengthening to +11 to +12mb. Gusty, onshore winds are
expected to move through the region during the day on Monday with
widespread gusts between 25 to 35 mph. Favored areas (the coast,
higher terrain, mountain gaps/passes) will see locally stronger
gusts between 35 to 40 mph. Conditions are not expected to meet Wind
Advisory criteria. Still, it would be worth securing any loose
outdoor items before gustier winds move through so they don`t blow
away.

&&

.LONG TERM...
Issued at 113 PM PDT Sun Jun 7 2026
(Monday night through next Saturday)

Troughing continues through Tuesday before the pattern changes
midweek. A weak cold front will pass through Monday night into
Tuesday morning and bring a chance for drizzle to far northern,
coastal Sonoma County. Elsewhere, rain chances have largely backed
off with no precipitation expected across the rest of the region.
Ensembles agree and have trended downwards with high agreement that
only a trace of rain to potentially a few hundredths of an inch will
fall. Temperatures on Tuesday will warm slightly compared to Monday
with highs in the 70s to low 80s across the interior and 50s to mid
60s along the coast.

The pattern begins to change Wednesday as upper level troughing
progresses eastward and strong upper level ridging/surface high
pressure sets up over the eastern Pacific Ocean. High temperatures
will warm to 10 to 15 degrees above normal across the interior and
higher elevations while coastal locations stay seasonally warm. The
current forecast has high temperatures in the upper 80s to mid 90s
with the warmest locations in the North/East Bays and interior
Central Coast reaching the low 100s. That said, the higher end of
this forecast should be taken with some caution. Ensemble guidance
shows a wide range of possible high temperatures for Wednesday and
Thursday with other models keeping high temperatures in the low to
mid 90s across the interior. Models will come into better agreement
as we get closer in time to Wednesday/Thursday but would not be
surprised if the forecasted high temperatures shift a bit. Hot
weather continues into Friday but temperatures cool into the upper
80s to low 90s across the interior with warmer temperatures expected
across the interior East Bay and Central Coast. The current forecast
has widespread Moderate HeatRisk across the Bay Area which impacts
those who do not have adequate access to cooling or drink enough
water. If you are spending time outdoors, make sure to take breaks
in the shade and drink plenty of water.

Fire weather concerns increase late Wednesday into Thursday as a
round of gusty, northerly winds move through the North Bay. The
strongest winds will be in the Sacramento Valley but will extend
into the interior North Bay Mountains, primarily on the Napa County
side. Daytime humidity retention is very poor with humidity values
dropping as low as 8%. Overnight recoveries will not offer much
relief with overnight humidity values peaking around 25-30% across
the higher elevations. Fuels are expected to dry rapidly given the
combo of gusty winds, hot weather, and very dry conditions which is
resulting in elevated fire weather concerns. For the moment, the
highest fire weather concerns are across the North Bay interior
mountains with the strongest northerly gusts limited to this region.
The rest of the Bay Area and Central Coast will be hot and dry but
much less windy. Remember, one less spark, one less wildfire.

&&

.AVIATION...
(18Z TAFS)
Issued at 1151 AM PDT Sun Jun 7 2026

VFR everywhere through the TAF period with some passing high clouds.
Widespread moderate onshore breezes with gusts in excess of 15kts
will prevail beginning this afternoon into the evening. Winds are
expected to diminish overnight, but most sites will remain gusty
with gentle to moderate breezes (~10-15kts).

Vicinity of SFO...VFR conditions with gusts in excess of 25kts and
moderate winds (~15-20kts). OAK won`t experience gusts until Monday
morning and the wind will be slightly lower than SFOs. High
confidence in the forecast.

SFO Bridge Approach...Similar pattern to SFO, except winds will be
slightly lower (around 15kts at 20Z) and gusts in excess of 25kts
are more probable. Gusty conditions will begin an hour later than
SFO and will ease around 05/06Z before picking up again late Monday
morning.

Monterey Bay Terminals...Onshore winds are expected to increase by
the early afternoon. MRY will experience frequent gusts up to 20
kts. SNS gusts may be more infrequent through the afternoon,
therefore it was not included in the TAF. Overnight, a marine layer
between 1000-1500 feet may result in a brief scattered cloud deck,
though confidence is currently to low to assess if it`ll become
MVFR. For now, VFR through the TAF period.

&&

.MARINE...
(Today through Friday)
Issued at 935 AM PDT Sun Jun 7 2026

Moderate northwesterly winds and seas will continue through today
then gradually ease tonight into Monday before building once
again midweek.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory until 3 AM PDT Monday for Mry Bay.

     Gale Warning until 9 PM PDT this evening for Pt Arena to Pt
     Reyes 0-10 nm.

     Small Craft Advisory until 3 PM PDT Monday for Pigeon Pt to Pt
     Pinos 0-10 nm-Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt
     Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm-Pt
     Reyes to Pigeon Pt 0-10 nm.

&&

$$

SHORT TERM...Kennedy
LONG TERM....Kennedy
AVIATION...Navarrete
MARINE...CW

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